{"id":5428,"date":"2025-03-07T21:21:23","date_gmt":"2025-03-07T12:21:23","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=5428"},"modified":"2026-10-02T19:28:58","modified_gmt":"2026-10-02T10:28:58","slug":"sql-group-by","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/sql-group-by\/","title":{"rendered":"\u3010SQL\u3011\u300cGROUP BY\u300d\u53e5\u3068\u306f\uff1f\u57fa\u672c\u69cb\u6587\u304b\u3089\u4f7f\u7528\u4f8b\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">SQL\u306e\u300cGROUP BY\u300d\u53e5\u306f\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">\u6307\u5b9a\u3057\u305f\u5217\u306e\u5024\u304c\u540c\u3058\u884c\u30921\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u307e\u3068\u3081\u3001\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u96c6\u8a08\u3059\u308b\u305f\u3081\u306e\u53e5<\/span>\u3067\u3059\u3002COUNT\u3084SUM\u306a\u3069\u306e\u96c6\u8a08\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u300c\u7537\u5973\u5225\u306e\u4eba\u6570\u300d\u300c\u6027\u5225\u3054\u3068\u306e\u5e73\u5747\u70b9\u300d\u306e\u3088\u3046\u306a\u96c6\u8a08\u7d50\u679c\u3092\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b1\u884c\u305a\u3064\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u30c6\u30fc\u30d6\u30eb\u3068\u5b9f\u884c\u7d50\u679c\u3092\u4f7f\u3044\u306a\u304c\u3089\u3001\u6b21\u306e\u5185\u5bb9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GROUP BY\u306e\u57fa\u672c\u69cb\u6587\u3068\u3001COUNT\u30fbSUM\u30fbAVG\u30fbMAX\u30fbMIN\u3067\u306e\u96c6\u8a08\u65b9\u6cd5<\/li>\n\n\n\n<li>\u300cSELECT\u53e5\u306e\u5217\u3067\u30a8\u30e9\u30fc\u306b\u306a\u308b\u300d\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<\/li>\n\n\n\n<li>WHERE\u30fbHAVING\u3067\u306e\u7d5e\u308a\u8fbc\u307f\u3001ORDER BY\u3067\u306e\u4e26\u3073\u66ff\u3048<\/li>\n\n\n\n<li>DISTINCT\u3084PARTITION BY\u3068\u306e\u9055\u3044<\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__1\" class=\"wp-block-heading\">GROUP BY\u3068\u306f\uff1f\u540c\u3058\u5024\u306e\u884c\u3092\u307e\u3068\u3081\u3066\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u96c6\u8a08\u3059\u308b\u53e5<\/h2>\n\n\n<p>GROUP BY\u53e5\u306f\u3001SELECT\u6587\u306e\u4e2d\u3067\u4f7f\u3046\u53e5\u306e1\u3064\u3067\u3059\u3002GROUP BY\u306b\u6307\u5b9a\u3057\u305f\u5217\u306e\u5024\u304c\u540c\u3058\u884c\u3069\u3046\u3057\u304c1\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u306a\u308a\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">\u96c6\u8a08\u7d50\u679c\u306f\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b1\u884c\u305a\u3064\u8fd4\u3055\u308c\u307e\u3059<\/span>\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u30017\u4eba\u5206\u306e\u30c6\u30b9\u30c8\u7d50\u679c\u3092\u300c\u6027\u5225\u300d\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3068\u3001\u300c\u7537\u300d\u3068\u300c\u5973\u300d\u306e2\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3053\u306b\u96c6\u8a08\u95a2\u6570\u306eCOUNT\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u7537\u5973\u305d\u308c\u305e\u308c\u306e\u4eba\u6570\u30922\u884c\u306e\u7d50\u679c\u3068\u3057\u3066\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010GROUP BY\u53e5\u306e\u4f7f\u7528\u30a4\u30e1\u30fc\u30b8\u3011<\/strong><\/p>\n\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_overview.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u300c\u30c6\u30b9\u30c8\u300d\u30c6\u30fc\u30d6\u30eb\u306e7\u884c\u3092\u6027\u5225\u3067GROUP BY\u3057\u3001\u7537\u59732\u884c\u306e\u7d50\u679c\u306b\u307e\u3068\u3081\u308b\u30a4\u30e1\u30fc\u30b8\" loading=\"lazy\">\n\n\n\n<h3 id=\"outline__1_1\" class=\"wp-block-heading\">GROUP BY\u306e\u57fa\u672c\u69cb\u6587\u3068\u66f8\u304f\u9806\u756a<\/h3>\n\n\n<p><strong>\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5217, \u96c6\u8a08\u95a2\u6570(\u5217)\nFROM \u30c6\u30fc\u30d6\u30eb\u540d\nGROUP BY \u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5217;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">GROUP BY\u53e5\u306f\u300cFROM\u300d\u53e5\u306e\u5f8c\u308d\u306b\u66f8\u304d\u307e\u3059\u3002WHERE\u30fbHAVING\u30fbORDER BY\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u9806\u756a\u3067\u8a18\u8ff0\u3057\u307e\u3059\uff08[ ]\u5185\u306f\u5fc5\u8981\u306a\u3068\u304d\u3060\u3051\u66f8\u304d\u307e\u3059\uff09\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5217, \u96c6\u8a08\u95a2\u6570(\u5217)\nFROM \u30c6\u30fc\u30d6\u30eb\u540d\n[WHERE \u884c\u306e\u6761\u4ef6]\nGROUP BY \u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5217\n[HAVING \u30b0\u30eb\u30fc\u30d7\u306e\u6761\u4ef6]\n[ORDER BY \u4e26\u3073\u66ff\u3048\u308b\u5217];<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001SQL\u306f\u66f8\u3044\u305f\u9806\u756a\u3069\u304a\u308a\u306b\u51e6\u7406\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<span class=\"c-user01\" style=\"font-weight:bold;\">\u8ad6\u7406\u7684\u306b\u306f\u300cFROM \u2192 WHERE \u2192 GROUP BY \u2192 HAVING \u2192 SELECT \u2192 ORDER BY\u300d\u306e\u9806\u306b\u51e6\u7406\u3055\u308c\u307e\u3059<\/span>\u3002\u3053\u306e\u9806\u756a\u3092\u77e5\u3063\u3066\u304a\u304f\u3068\u3001\u5f8c\u307b\u3069\u89e3\u8aac\u3059\u308bWHERE\u3068HAVING\u306e\u9055\u3044\u3084\u3001SELECT\u53e5\u306b\u66f8\u3051\u308b\u5217\u306e\u30eb\u30fc\u30eb\u304c\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u9806\u756a<\/strong><\/td><td><strong>\u66f8\u304f\u9806\u756a<\/strong><\/td><td><strong>\u51e6\u7406\u3055\u308c\u308b\u9806\u756a\uff08\u8ad6\u7406\u7684\u306a\u9806\u756a\uff09<\/strong><\/td><\/tr><tr><td>1<\/td><td>SELECT<\/td><td>FROM<\/td><\/tr><tr><td>2<\/td><td>FROM<\/td><td>WHERE<\/td><\/tr><tr><td>3<\/td><td>WHERE<\/td><td>GROUP BY<\/td><\/tr><tr><td>4<\/td><td>GROUP BY<\/td><td>HAVING<\/td><\/tr><tr><td>5<\/td><td>HAVING<\/td><td>SELECT<\/td><\/tr><tr><td>6<\/td><td>ORDER BY<\/td><td>ORDER BY<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u203b\u5b9f\u969b\u306e\u5b9f\u884c\u624b\u9806\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u4f5c\u308b\u5b9f\u884c\u8a08\u753b\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u51e6\u7406\u9806\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/techmania.jp\/blog\/sql-select\/\" target=\"_blank\" rel=\"noopener\">SELECT\u6587\u306e\u89e3\u8aac\u8a18\u4e8b<\/a>\u3067\u3082\u8a73\u3057\u304f\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"margin-top:4%;\">\n<a href=\"https:\/\/techmania.jp\/\"><\/a><p style=\"text-align:center; text-decoration:underline black; font-weight:bold;\">\u3042\u306a\u305f\u306e<span style=\"color: red;\">\u3054\u5e0c\u671b\u306b\u6cbf\u3063\u305f\u6848\u4ef6<\/span>\u304c\u5fc5\u305a\u898b\u3064\u304b\u308a\u307e\u3059<br>\u3010\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u5411\u3051\u3011<span style=\"color: red;\">\u9ad8\u53ce\u5165<\/span>\u30fb<span style=\"color: blue;\">\u597d\u5f85\u9047<\/span>\u306e\u6848\u4ef6\u3092\u3054\u7d39\u4ecb<\/p><\/a>\n<\/div>\n<div style=\"text-align:center; margin-top:1%;\"><a href=\"https:\/\/techmania.jp\/\"><img decoding=\"async\" style=\"filter: drop-shadow(0px 0px 3px rgba(0,0,0,0.3)); width:300px;\" alt=\"TECH MANIA \u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\" src=\"https:\/\/techmania.jp\/blog\/wp-content\/uploads\/2024\/01\/fl1.png\" loading=\"lazy\"><\/a><\/div>\n<div>\n<a href=\"https:\/\/techmania.jp\/\"><\/a><p style=\"margin-top: 1%;text-align:center; text-decoration:underline black; font-weight:bold;\">\u226b\u307e\u305a\u306f\u7c21\u5358<span style=\"color: blue;\">60<\/span>\u79d2\u3067<span style=\"color: red;\">\u7121\u6599\u304a\u554f\u3044\u5408\u308f\u305b<\/span>\u304b\u3089\u226a<\/p><\/a>\n<\/div>\n\n\n\n<h3 id=\"outline__1_2\" class=\"wp-block-heading\">\u3053\u306e\u8a18\u4e8b\u3067\u4f7f\u3046\u30b5\u30f3\u30d7\u30eb\u30c6\u30fc\u30d6\u30eb<\/h3>\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u300c\u30c6\u30b9\u30c8\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3063\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u300c\u30c6\u30b9\u30c8\u300d\u30c6\u30fc\u30d6\u30eb<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>+------+--------+------+------+\n| id   | \u6c0f\u540d   | \u6027\u5225 | \u70b9\u6570 |\n+------+--------+------+------+\n| 1001 | \u79cb\u5c71   | \u7537   |  80  |\n| 1002 | \u4e45\u4fdd\u7530 | \u5973   | 100  |\n| 1003 | \u4f50\u3005\u6728 | \u5973   |  65  |\n| 1004 | \u4f50\u85e4   | \u7537   |  75  |\n| 1005 | \u9234\u6728   | \u5973   |  60  |\n| 1006 | \u7530\u4e2d   | \u7537   |  90  |\n| 1007 | \u571f\u5c4b   | \u5973   |  55  |\n+------+--------+------+------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u7528\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>CREATE TABLE \u30c6\u30b9\u30c8 (\n  id   INT PRIMARY KEY,\n  \u6c0f\u540d VARCHAR(20),\n  \u6027\u5225 VARCHAR(2),\n  \u70b9\u6570 INT\n);\n\nINSERT INTO \u30c6\u30b9\u30c8 (id, \u6c0f\u540d, \u6027\u5225, \u70b9\u6570) VALUES\n(1001, &#39;\u79cb\u5c71&#39;,   &#39;\u7537&#39;,  80),\n(1002, &#39;\u4e45\u4fdd\u7530&#39;, &#39;\u5973&#39;, 100),\n(1003, &#39;\u4f50\u3005\u6728&#39;, &#39;\u5973&#39;,  65),\n(1004, &#39;\u4f50\u85e4&#39;,   &#39;\u7537&#39;,  75),\n(1005, &#39;\u9234\u6728&#39;,   &#39;\u5973&#39;,  60),\n(1006, &#39;\u7530\u4e2d&#39;,   &#39;\u7537&#39;,  90),\n(1007, &#39;\u571f\u5c4b&#39;,   &#39;\u5973&#39;,  55);<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u203b\u672c\u8a18\u4e8b\u306e\u5b9f\u884c\u7d50\u679c\u306f\u3001MySQL 8.0\u3067\u5b9f\u884c\u3057\u305f\u5834\u5408\u306e\u51fa\u529b\u4f8b\u3067\u3059\u3002SQL Server\u3067\u65e5\u672c\u8a9e\u3092\u6271\u3046\u5834\u5408\u306f\u5217\u306e\u578b\u3092NVARCHAR\u306b\u3057\u3066\u5024\u306b\u300cN&#39;\u7537&#39;\u300d\u306e\u3088\u3046\u306bN\u3092\u4ed8\u3051\u3001Oracle\u3067\u306f\u300cVARCHAR2(2 CHAR)\u300d\u306e\u3088\u3046\u306b\u6587\u5b57\u6570\u3067\u9577\u3055\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">GROUP BY\u3068\u96c6\u8a08\u95a2\u6570\u3067\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u96c6\u8a08\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u8a08\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001GROUP BY\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u30c7\u30fc\u30bf\u306e\u96c6\u8a08\u7d50\u679c\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<p><strong style=\"font-size: revert; color: initial;\">\u96c6\u8a08\u95a2\u6570\u3068\u306f<\/strong><\/p>\n<div class=\"questionBox\">\n<p>\u96c6\u8a08\u95a2\u6570\u3068\u306f\u3001\u305d\u306e\u9805\u76ee\u306e\u5408\u8a08\u5024\u3084\u5e73\u5747\u5024\u3092\u6c42\u3081\u305f\u308a\u3001\u3042\u308b\u3044\u306f<a href=\"https:\/\/techmania.jp\/blog\/sql-count\/\" target=\"_blank\" rel=\"noopener\">COUNT\u95a2\u6570<\/a>\u306e\u3088\u3046\u306b\u30c7\u30fc\u30bf\u4ef6\u6570\u3092\u53d6\u5f97\u3059\u308b\u306a\u3069\u3001\u305d\u306e\u540d\u306e\u901a\u308a\u96c6\u8a08\u3092\u884c\u3046\u95a2\u6570\u306e\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u3089\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u90fd\u5ea6\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u3001\u30c7\u30fc\u30bf\u5206\u6790\u306a\u3069\u306b\u4f7f\u3046\u3068\u4fbf\u5229\u3067\u3059\u3002\u5f8c\u307b\u3069\u8a73\u3057\u304f\u7d39\u4ecb\u3057\u307e\u3059\u304c\u3001\u96c6\u8a08\u95a2\u6570\u3068\u305d\u308c\u305e\u308c\u7528\u9014\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u96c6\u8a08\u95a2\u6570\u306e\u7a2e\u985e\u3068\u7528\u9014\u3011<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u96c6\u8a08\u95a2\u6570<\/strong><\/td><td><strong>\u7528\u9014<\/strong><\/td><\/tr><tr><td>COUNT<\/td><td>\u9805\u76ee\u306e\u30c7\u30fc\u30bf\u4ef6\u6570\u3092\u53d6\u5f97\u3059\u308b<\/td><\/tr><tr><td>SUM<\/td><td>\u9805\u76ee\u306e\u30c7\u30fc\u30bf\u5408\u8a08\u5024\u3092\u53d6\u5f97\u3059\u308b<\/td><\/tr><tr><td>AVG<\/td><td>\u9805\u76ee\u306e\u30c7\u30fc\u30bf\u5e73\u5747\u5024\u3092\u53d6\u5f97\u3059\u308b<\/td><\/tr><tr><td>MAX<\/td><td>\u9805\u76ee\u306e\u30c7\u30fc\u30bf\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b<\/td><\/tr><tr><td>MIN<\/td><td>\u9805\u76ee\u306e\u30c7\u30fc\u30bf\u6700\u5c0f\u5024\u3092\u53d6\u5f97\u3059\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"outline__2_1\" class=\"wp-block-heading\">COUNT\u95a2\u6570\u3067\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u4ef6\u6570\u3092\u6570\u3048\u308b<\/h3>\n\n\n<p>\u300cCOUNT\u300d\u95a2\u6570\u306f\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u30c7\u30fc\u30bf\u306e\u4ef6\u6570\u3092\u96c6\u8a08\u3057\u307e\u3059\u3002\u300cGROUP BY\u300d\u3068\u4f75\u7528\u3057\u3066\u3001\u30c6\u30b9\u30c8\u3092\u53d7\u3051\u305f\u751f\u5f92\u306e\u7537\u5973\u5225\u306e\u4eba\u6570\u3092\u6c42\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, COUNT(*) AS \u4eba\u6570 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>+------+------+\n| \u6027\u5225 | \u4eba\u6570 |\n+------+------+\n| \u7537   |  3   |\n| \u5973   |  4   |\n+------+------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_count_v2.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u6027\u5225\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u5404\u30b0\u30eb\u30fc\u30d7\u306e\u884c\u6570\u3092COUNT(*)\u3067\u6570\u3048\u3001\u75373\u30fb\u59734\u3068\u306a\u308b\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u6027\u5225\u300d\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3092\u884c\u3044\u3001\u6027\u5225\u3054\u3068\u306e\u4eba\u6570\u3092\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">\u300cGROUP BY\u300d\u53e5\u3068\u300cCOUNT\u300d\u95a2\u6570\u3092\u4f75\u7528\u3059\u308c\u3070\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u30ec\u30b3\u30fc\u30c9\u6570\u3092\u96c6\u8a08\u3067\u304d\u307e\u3059<\/span>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u884c\u6570\u3092\u6570\u3048\u308b\u3068\u304d\u306f\u300cCOUNT(*)\u300d\u3092\u4f7f\u3046\u306e\u304c\u57fa\u672c\u3067\u3059\u3002\u300cCOUNT(\u6027\u5225)\u300d\u306e\u3088\u3046\u306b\u5217\u540d\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u305d\u306e\u5217\u304cNULL\u306e\u884c\u306f\u6570\u3048\u3089\u308c\u307e\u305b\u3093\u3002COUNT(*)\u3068COUNT(\u5217\u540d)\u306e\u9055\u3044\u306f\u3001\u3053\u3061\u3089\u306e\u30da\u30fc\u30b8\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"techmania-recirc\">\n<style>\n.techmania-recirc{margin:24px 0;font-family:-apple-system,\"Hiragino Kaku Gothic ProN\",\"Yu Gothic\",sans-serif;}\n.techmania-recirc__label{font-size:14px;color:#333;margin-bottom:8px;font-weight:bold;}\n.techmania-recirc__list{display:flex;flex-direction:column;gap:12px;}\n.techmania-recirc__box{display:flex;align-items:center;gap:16px;border:1px solid #ddd;border-radius:4px;padding:12px 16px;text-decoration:none;transition:background .2s;}\n.techmania-recirc__box:hover{background:#f7f9fc;}\n.techmania-recirc__thumb{width:96px;aspect-ratio:6\/4;object-fit:cover;border-radius:4px;flex-shrink:0;}\n.techmania-recirc__title{color:#2952cc;font-size:15px;line-height:1.6;flex:1;}\n.techmania-recirc__arrow{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:#2952cc;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;}\n<\/style>\n<div class=\"techmania-recirc__label\">\u25bc\u3042\u308f\u305b\u3066\u30c1\u30a7\u30c3\u30af\u25bc<\/div>\n<div class=\"techmania-recirc__list\">\n<a class=\"techmania-recirc__box\" href=\"https:\/\/techmania.jp\/blog\/sql-count\/\">\n  <img decoding=\"async\" class=\"techmania-recirc__thumb\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/sqlc0.webp\" alt=\"\u3010SQL\u3011COUNT\u95a2\u6570\u3067\u30c7\u30fc\u30bf\u3092\u96c6\u8a08\u3059\u308b\uff01\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac\" loading=\"lazy\">\n  <span class=\"techmania-recirc__title\">\u3010SQL\u3011COUNT\u95a2\u6570\u3067\u30c7\u30fc\u30bf\u3092\u96c6\u8a08\u3059\u308b\uff01\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac<\/span>\n  <span class=\"techmania-recirc__arrow\">\u25b6<\/span>\n<\/a>\n<\/div>\n<\/div>\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">SUM\u95a2\u6570\u3067\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u5408\u8a08\u3092\u6c42\u3081\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SUM\u95a2\u6570\u306f\u30c7\u30fc\u30bf\u306e\u5408\u8a08\u5024\u3092\u7b97\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a66\u3057\u306b\u3001\u7537\u5973\u5225\u306e\u5408\u8a08\u5f97\u70b9\u3092\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, SUM(\u70b9\u6570) AS \u5408\u8a08\u5f97\u70b9 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+----------+\n| \u6027\u5225 | \u5408\u8a08\u5f97\u70b9 |\n+------+----------+\n|  \u7537  |   245    |\n|  \u5973  |   280    |\n+------+----------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_sum_v2.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u6027\u5225\u3054\u3068\u306b\u70b9\u6570\u3092SUM\u3067\u5408\u8a08\u3057\u3001\u7537245\u70b9\u30fb\u5973280\u70b9\u3068\u306a\u308b\u56f3\" loading=\"lazy\"><br>\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">AVG\u95a2\u6570\u3067\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u5e73\u5747\u3092\u6c42\u3081\u308b\uff08\u56db\u6368\u4e94\u5165\u30fb\u5207\u308a\u6368\u3066\u3082\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AVG\u95a2\u6570\u306f\u30c7\u30fc\u30bf\u306e\u5e73\u5747\u5024\u3092\u7b97\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a66\u3057\u306b\u3001\u6027\u5225\u3054\u3068\u306e\u5e73\u5747\u70b9\u3092\u8a08\u7b97\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, AVG(\u70b9\u6570) AS \u5e73\u5747\u70b9 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+---------+\n| \u6027\u5225 | \u5e73\u5747\u70b9  |\n+------+---------+\n|  \u7537  | 81.6667 |\n|  \u5973  | 70.0000 |\n+------+---------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_avg_v2.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u6027\u5225\u3054\u3068\u306b\u70b9\u6570\u3092AVG\u3067\u5e73\u5747\u3057\u3001\u753781.6667\u30fb\u597370.0000\u3068\u306a\u308b\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL\u3067\u306f\u3001\u6574\u6570\u306e\u5e73\u5747\u306f\u5c0f\u6570\u7b2c4\u4f4d\u307e\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<span class=\"c-user01\" style=\"font-weight:bold;\">\u5e73\u5747\u5024\u306e\u8868\u793a\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u7570\u306a\u308b<\/span>\u305f\u3081\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9<\/strong><\/td><td><strong>\u7537\u306e\u5e73\u5747\u70b9\u306e\u8868\u793a<\/strong><\/td><td><strong>\u5099\u8003<\/strong><\/td><\/tr><tr><td>MySQL<\/td><td>81.6667<\/td><td>\u5c0f\u6570\u7b2c4\u4f4d\u307e\u3067\u8868\u793a<\/td><\/tr><tr><td>PostgreSQL<\/td><td>81.6666666666666667<\/td><td>\u6574\u6570\u306e\u5e73\u5747\u306fnumeric\u578b\u306b\u306a\u308b<\/td><\/tr><tr><td>SQL Server<\/td><td>81<\/td><td>\u6574\u6570\uff08INT\uff09\u306e\u5e73\u5747\u306f\u6574\u6570\u3067\u8fd4\u3055\u308c\u308b<\/td><\/tr><tr><td>SQLite<\/td><td>81.6666666666667<\/td><td>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u8fd4\u3055\u308c\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">SQL Server\u3067\u5c0f\u6570\u307e\u3067\u6c42\u3081\u305f\u3044\u5834\u5408\u306f\u3001\u300cAVG(\u70b9\u6570 * 1.0)\u300d\u306e\u3088\u3046\u306b\u5c0f\u6570\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u5e73\u5747\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e73\u5747\u5024\u3092\u56db\u6368\u4e94\u5165\u3057\u3066\u8868\u793a\u3057\u305f\u3044\u5834\u5408\u306f\u3001ROUND\u95a2\u6570\u3092\u4f7f\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u5c0f\u6570\u7b2c2\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u3066\u5c0f\u6570\u7b2c1\u4f4d\u307e\u3067\u8868\u793a\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, ROUND(AVG(\u70b9\u6570), 1) AS \u5e73\u5747\u70b9 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+--------+\n| \u6027\u5225 | \u5e73\u5747\u70b9 |\n+------+--------+\n|  \u7537  |  81.7  |\n|  \u5973  |  70.0  |\n+------+--------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5207\u308a\u6368\u3066\u306b\u4f7f\u3046\u95a2\u6570\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u540d\u524d\u3084\u66f8\u304d\u65b9\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u4e3b\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u66f8\u304d\u65b9\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u51e6\u7406<\/strong><\/td><td><strong>MySQL<\/strong><\/td><td><strong>PostgreSQL \/ Oracle<\/strong><\/td><td><strong>SQL Server<\/strong><\/td><\/tr><tr><td>\u5c0f\u6570\u7b2c2\u4f4d\u307e\u3067\u6b8b\u3057\u3066\u56db\u6368\u4e94\u5165<\/td><td>ROUND(\u5024, 2)<\/td><td>ROUND(\u5024, 2)<\/td><td>ROUND(\u5024, 2)<\/td><\/tr><tr><td>\u5c0f\u6570\u7b2c2\u4f4d\u307e\u3067\u6b8b\u3057\u3066\u5207\u308a\u6368\u3066<\/td><td>TRUNCATE(\u5024, 2)<\/td><td>TRUNC(\u5024, 2)<\/td><td>ROUND(\u5024, 2, 1)<\/td><\/tr><tr><td>\u5c0f\u6570\u70b9\u4ee5\u4e0b\u3092\u5207\u308a\u6368\u3066<\/td><td>TRUNCATE(\u5024, 0)<\/td><td>TRUNC(\u5024)<\/td><td>ROUND(\u5024, 0, 1)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">SQL Server\u306eROUND\u95a2\u6570\u306f\u3001\u6841\u6570\u306e\u6307\u5b9a\uff082\u3064\u76ee\u306e\u5f15\u6570\uff09\u3092\u7701\u7565\u3067\u304d\u307e\u305b\u3093\u3002\u307e\u305f\u3001FLOOR\u95a2\u6570\uff08\u3069\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3082\u3042\u308a\u307e\u3059\uff09\u3067\u3082\u5c0f\u6570\u70b9\u4ee5\u4e0b\u3092\u5207\u308a\u6368\u3066\u3089\u308c\u307e\u3059\u304c\u3001\u6841\u6570\u306f\u6307\u5b9a\u3067\u304d\u305a\u3001\u8ca0\u306e\u6570\u3067\u306f\u7d50\u679c\u304c\u5909\u308f\u308a\u307e\u3059\uff08FLOOR(-1.5)\u306f-2\u3001TRUNC(-1.5)\u306f-1\uff09\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_4\" class=\"wp-block-heading\">MAX\u30fbMIN\u95a2\u6570\u3067\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3092\u6c42\u3081\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MAX\u95a2\u6570\u306f\u30c7\u30fc\u30bf\u306e\u6700\u5927\u5024\u3001MIN\u95a2\u6570\u306f\u6700\u5c0f\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u30021\u3064\u306eSELECT\u6587\u306e\u4e2d\u3067\u8907\u6570\u306e\u96c6\u8a08\u95a2\u6570\u3092\u540c\u6642\u306b\u4f7f\u3046\u3053\u3068\u3082\u3067\u304d\u308b\u306e\u3067\u3001\u6027\u5225\u3054\u3068\u306e\u6700\u9ad8\u5f97\u70b9\u3068\u6700\u4f4e\u5f97\u70b9\u3092\u307e\u3068\u3081\u3066\u53d6\u5f97\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, MAX(\u70b9\u6570) AS \u6700\u9ad8\u5f97\u70b9, MIN(\u70b9\u6570) AS \u6700\u4f4e\u5f97\u70b9 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+----------+----------+\n| \u6027\u5225 | \u6700\u9ad8\u5f97\u70b9 | \u6700\u4f4e\u5f97\u70b9 |\n+------+----------+----------+\n|  \u7537  |    90    |    75    |\n|  \u5973  |   100    |    55    |\n+------+----------+----------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_max_min.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u6027\u5225\u3054\u3068\u306e\u6700\u9ad8\u5f97\u70b9\u3068\u6700\u4f4e\u5f97\u70b9\u3092MAX\u30fbMIN\u3067\u540c\u6642\u306b\u53d6\u5f97\u3059\u308b\u56f3\" loading=\"lazy\"><br>\n\n\n\n<h3 id=\"outline__2_5\" class=\"wp-block-heading\">\u8907\u6570\u306e\u30ab\u30e9\u30e0\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067\u306f\u300c\u6027\u5225\u300d\u3068\u3044\u30461\u3064\u306e\u30ab\u30e9\u30e0\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001GROUP BY\u53e5\u306f\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u8907\u6570\u306e\u30ab\u30e9\u30e0\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">\u6307\u5b9a\u3057\u305f\u30ab\u30e9\u30e0\u306e\u5024\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u540c\u3058\u30ec\u30b3\u30fc\u30c9\u3054\u3068\u306b1\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059<\/span>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067\u4f7f\u7528\u3057\u3066\u304d\u305f\u300c\u30c6\u30b9\u30c8\u300d\u30c6\u30fc\u30d6\u30eb\u306f\u6027\u5225\u4ee5\u5916\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3067\u304d\u308b\u9805\u76ee\u304c\u306a\u3044\u305f\u3081\u3001\u6027\u5225\u306b\u52a0\u3048\u3066\u300c\u5b66\u5e74\u300d\u306e\u60c5\u5831\u3092\u6301\u3064\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5225\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u4f8b\u306b\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u300c\u751f\u5f92\u300d\u30c6\u30fc\u30d6\u30eb<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+--------+------+------+\n| \u6c0f\u540d   | \u6027\u5225 | \u5b66\u5e74 |\n+--------+------+------+\n| \u9ad8\u6a4b   | \u7537   | 1\u5e74  |\n| \u4f0a\u85e4   | \u5973   | 1\u5e74  |\n| \u6e21\u8fba   | \u7537   | 1\u5e74  |\n| \u5c0f\u6797   | \u5973   | 2\u5e74  |\n| \u4e2d\u6751   | \u7537   | 2\u5e74  |\n| \u52a0\u85e4   | \u5973   | 2\u5e74  |\n+--------+------+------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6027\u5225\u3068\u5b66\u5e74\u306e\u7d44\u307f\u5408\u308f\u305b\u3054\u3068\u306b\u4eba\u6570\u3092\u96c6\u8a08\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bGROUP BY\u53e5\u306e\u5f8c\u308d\u306b\u30ab\u30e9\u30e0\u540d\u3092\u30ab\u30f3\u30de\u3067\u533a\u5207\u3063\u3066\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, \u5b66\u5e74, COUNT(*) AS \u4eba\u6570 FROM \u751f\u5f92 GROUP BY \u6027\u5225, \u5b66\u5e74;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+------+------+\n| \u6027\u5225 | \u5b66\u5e74 | \u4eba\u6570 |\n+------+------+------+\n| \u7537   | 1\u5e74  |  2   |\n| \u5973   | 1\u5e74  |  1   |\n| \u7537   | 2\u5e74  |  1   |\n| \u5973   | 2\u5e74  |  2   |\n+------+------+------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306b\u3001\u300c\u6027\u5225\u300d\u3068\u300c\u5b66\u5e74\u300d\u304c\u540c\u3058\u7d44\u307f\u5408\u308f\u305b\u306e\u30ec\u30b3\u30fc\u30c9\u3054\u3068\u306b1\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u3068\u3057\u3066\u96c6\u8a08\u3055\u308c\u307e\u3059\u3002\u96c6\u8a08\u8ef8\u3092\u5897\u3084\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u540c\u69d8\u306b\u30ab\u30e9\u30e0\u540d\u3092\u30ab\u30f3\u30de\u3067\u8ffd\u52a0\u3057\u3066\u3044\u304f\u3060\u3051\u3067\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">GROUP BY\u3092\u4f7f\u3046\u3068\u304d\u306e\u6ce8\u610f\u70b9\u3068\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GROUP BY\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3046\u3048\u3067\u3001\u3044\u304f\u3064\u304b\u6c17\u3092\u4ed8\u3051\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_1\" class=\"wp-block-heading\">SELECT\u53e5\u306b\u306fGROUP BY\u306e\u5217\u3068\u96c6\u8a08\u95a2\u6570\u3060\u3051\u3092\u66f8\u304f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GROUP BY\u3092\u4f7f\u3063\u305fSELECT\u6587\u3067\u306f\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">SELECT\u53e5\u306b\u66f8\u3051\u308b\u5217\u306f\u300cGROUP BY\u306b\u6307\u5b9a\u3057\u305f\u5217\u300d\u3068\u300c\u96c6\u8a08\u95a2\u6570\u300d\u3060\u3051<\/span>\u3067\u3059\u3002\u305d\u308c\u4ee5\u5916\u306e\u5217\u3092\u305d\u306e\u307e\u307e\u66f8\u304f\u3068\u3001\u591a\u304f\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010NG\u4f8b\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, \u6c0f\u540d FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6027\u5225\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3068\u3001\u305f\u3068\u3048\u3070\u300c\u5973\u300d\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u306f\u4e45\u4fdd\u7530\u30fb\u4f50\u3005\u6728\u30fb\u9234\u6728\u30fb\u571f\u5c4b\u306e4\u4eba\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u30b0\u30eb\u30fc\u30d7\u306e\u7d50\u679c\u306f1\u884c\u306b\u307e\u3068\u3081\u3089\u308c\u308b\u305f\u3081\u30014\u4eba\u306e\u3046\u3061\u3069\u306e\u6c0f\u540d\u3092\u8868\u793a\u3059\u308c\u3070\u3088\u3044\u304b\u6c7a\u3081\u3089\u308c\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u6b21\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9<\/strong><\/td><td><strong>NG\u4f8b\u3092\u5b9f\u884c\u3057\u305f\u3068\u304d\u306e\u7d50\u679c<\/strong><\/td><\/tr><tr><td>MySQL 5.7.5\u4ee5\u964d<\/td><td>\u30a8\u30e9\u30fc\uff08ERROR 1055\uff09\u3002\u521d\u671f\u8a2d\u5b9a\u3067\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u300cONLY_FULL_GROUP_BY\u300d\u30e2\u30fc\u30c9\u306b\u3088\u308b\u3082\u306e<\/td><\/tr><tr><td>PostgreSQL<\/td><td>\u30a8\u30e9\u30fc\uff08column &#8220;\u30c6\u30b9\u30c8.\u6c0f\u540d&#8221; must appear in the GROUP BY clause or be used in an aggregate function\uff09<\/td><\/tr><tr><td>SQL Server<\/td><td>\u30a8\u30e9\u30fc\uff08Msg 8120\uff1a\u96c6\u8a08\u95a2\u6570\u307e\u305f\u306fGROUP BY\u53e5\u306b\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u9078\u629e\u30ea\u30b9\u30c8\u5185\u3067\u306f\u7121\u52b9\u3067\u3059\uff09<\/td><\/tr><tr><td>Oracle<\/td><td>\u30a8\u30e9\u30fc\uff08ORA-00979\uff1aGROUP BY\u306e\u5f0f\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09<\/td><\/tr><tr><td>SQLite<\/td><td>\u30a8\u30e9\u30fc\u306b\u306a\u3089\u305a\u3001\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u3044\u305a\u308c\u304b1\u884c\u306e\u6c0f\u540d\u304c\u8868\u793a\u3055\u308c\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">SQLite\u3084\u3001ONLY_FULL_GROUP_BY\u3092\u7121\u52b9\u306b\u3057\u305fMySQL\u3067\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u305b\u3093\u304c\u3001\u3069\u306e\u884c\u306e\u5024\u304c\u8868\u793a\u3055\u308c\u308b\u304b\u306f\u6c7a\u307e\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u30a8\u30e9\u30fc\u306b\u306a\u3089\u306a\u3044\u74b0\u5883\u3067\u3082\u3001\u3053\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u306f\u907f\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001\u9006\u306b<strong>GROUP BY\u306b\u6307\u5b9a\u3057\u305f\u5217\u3092SELECT\u53e5\u306b\u66f8\u304b\u306a\u3044\u306e\u306f\u554f\u984c\u3042\u308a\u307e\u305b\u3093<\/strong>\u3002\u300cSELECT COUNT(*) FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;\u300d\u306f\u6b63\u3057\u304f\u5b9f\u884c\u3067\u304d\u3001\u4eba\u6570\u3060\u3051\u304c2\u884c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NG\u4f8b\u306e\u3088\u3046\u306b\u6c0f\u540d\u3082\u8868\u793a\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u76ee\u7684\u306b\u5408\u308f\u305b\u3066\u6b21\u306e\u3044\u305a\u308c\u304b\u306e\u65b9\u6cd5\u3067\u66f8\u304d\u76f4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>GROUP BY\u306b\u5217\u3092\u8ffd\u52a0\u3059\u308b<\/strong>\uff1a\u300cGROUP BY \u6027\u5225, \u6c0f\u540d\u300d\u3068\u3059\u308b\u3068\u3001\u30b0\u30eb\u30fc\u30d7\u306e\u5358\u4f4d\u304c\u300c\u6027\u5225\u3068\u6c0f\u540d\u306e\u7d44\u307f\u5408\u308f\u305b\u300d\u306b\u5909\u308f\u308a\u307e\u3059\uff08\u4eca\u56de\u306e\u30c7\u30fc\u30bf\u3067\u306f1\u4eba\u305a\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u306a\u308a\u307e\u3059\uff09<\/li>\n\n\n\n<li><strong>\u96c6\u8a08\u95a2\u6570\u30671\u3064\u306e\u5024\u306b\u307e\u3068\u3081\u308b<\/strong>\uff1a\u6c0f\u540d\u306e\u4ef6\u6570\u3092\u6570\u3048\u308b\u306a\u3089COUNT\u3001\u6700\u9ad8\u5f97\u70b9\u3092\u6c42\u3081\u308b\u306a\u3089MAX\u306e\u3088\u3046\u306b\u3001\u96c6\u8a08\u95a2\u6570\u3092\u4f7f\u3044\u307e\u3059<\/li>\n\n\n\n<li><strong>\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u5024\u3092\u9023\u7d50\u3057\u3066\u8868\u793a\u3059\u308b<\/strong>\uff1a\u30b0\u30eb\u30fc\u30d7\u306b\u542b\u307e\u308c\u308b\u6c0f\u540d\u3092\u4e00\u89a7\u3067\u8868\u793a\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b\u96c6\u8a08\u95a2\u6570\u3092\u4f7f\u3044\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL\u3067\u306f\u3001GROUP_CONCAT\u95a2\u6570\u3092\u4f7f\u3063\u3066\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u6c0f\u540d\u3092\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, GROUP_CONCAT(\u6c0f\u540d ORDER BY id) AS \u6c0f\u540d\u4e00\u89a7 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+--------------------------+\n| \u6027\u5225 | \u6c0f\u540d\u4e00\u89a7                 |\n+------+--------------------------+\n| \u7537   | \u79cb\u5c71,\u4f50\u85e4,\u7530\u4e2d           |\n| \u5973   | \u4e45\u4fdd\u7530,\u4f50\u3005\u6728,\u9234\u6728,\u571f\u5c4b  |\n+------+--------------------------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u51e6\u7406\u306f\u3001PostgreSQL\u3084SQL Server 2017\u4ee5\u964d\u3067\u306fSTRING_AGG\u95a2\u6570\u3001Oracle\u3067\u306fLISTAGG\u95a2\u6570\u3067\u66f8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_2\" class=\"wp-block-heading\">NULL\u306f1\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u307e\u3068\u3081\u3089\u308c\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GROUP BY\u3067\u6307\u5b9a\u3057\u305f\u5217\u306b\u300cNULL\u300d\u5024\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">NULL\u306e\u884c\u306f\u3059\u3079\u3066\u307e\u3068\u3081\u30661\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u3068\u3057\u3066\u96c6\u8a08\u3055\u308c\u307e\u3059<\/span>\u3002\u305f\u3068\u3048\u3070\u6027\u5225\u304c\u672a\u767b\u9332\uff08NULL\uff09\u306e\u751f\u5f92\u304c\u3044\u305f\u5834\u5408\u3001\u7d50\u679c\u306b\u306f\u300c\u7537\u300d\u300c\u5973\u300d\u306b\u52a0\u3048\u3066\u6027\u5225\u304cNULL\u306e\u884c\u304c1\u884c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001COUNT(*)\u4ee5\u5916\u306e\u96c6\u8a08\u95a2\u6570\u306fNULL\u3092\u7121\u8996\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u70b9\u6570\u304cNULL\u306e\u751f\u5f92\u304c\u3044\u308b\u5834\u5408\u3001AVG(\u70b9\u6570)\u306f\u305d\u306e\u751f\u5f92\u3092\u9664\u3044\u305f\u4eba\u6570\u3067\u5e73\u5747\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NULL\u306e\u30b0\u30eb\u30fc\u30d7\u3092\u7d50\u679c\u306b\u542b\u3081\u305f\u304f\u306a\u3044\u5834\u5408\u306f\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u524d\u306bWHERE\u53e5\u3067\u9664\u5916\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, COUNT(*) AS \u4eba\u6570 FROM \u30c6\u30b9\u30c8 WHERE \u6027\u5225 IS NOT NULL GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">NULL\u306e\u5224\u5b9a\u65b9\u6cd5\uff08IS NULL \/ IS NOT NULL\uff09\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/techmania.jp\/blog\/sql-null\/\" target=\"_blank\" rel=\"noopener\">NULL\u306e\u6271\u3044\u65b9\u306e\u89e3\u8aac\u8a18\u4e8b<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">WHERE\u3068HAVING\u3067\u96c6\u8a08\u3059\u308b\u5bfe\u8c61\u3092\u7d5e\u308a\u8fbc\u3080<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cGROUP BY\u300d\u53e5\u3068\u4f75\u305b\u3066\u300c<strong>WHERE<\/strong>\u300d\u53e5\u307e\u305f\u306f\u300c<strong>HAVING<\/strong>\u300d\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u96c6\u8a08\u3059\u308b\u5bfe\u8c61\u3092\u6761\u4ef6\u3067\u7d5e\u308a\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_1\" class=\"wp-block-heading\">WHERE\u3068HAVING\u306e\u9055\u3044\u306f\u300c\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u524d\u304b\u5f8c\u304b\u300d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cWHERE\u300d\u53e5\u3068\u300cHAVING\u300d\u53e5\u306f\u3001\u6761\u4ef6\u304c\u9069\u7528\u3055\u308c\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u5192\u982d\u3067\u7d39\u4ecb\u3057\u305f\u51e6\u7406\u9806\u300cFROM \u2192 WHERE \u2192 GROUP BY \u2192 HAVING \u2192 SELECT \u2192 ORDER BY\u300d\u306e\u3068\u304a\u308a\u3001WHERE\u306f\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u524d\u3001HAVING\u306f\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u5f8c\u306b\u51e6\u7406\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"bgBox\">\n<p><strong>\u300cWHERE\u300d\u53e5\uff1a\u300cGROUP BY\u300d\u53e5\u306e\u5b9f\u884c\u524d\u306b\u3001\u884c\u306b\u5bfe\u3057\u3066\u6761\u4ef6\u304c\u9069\u7528\u3055\u308c\u308b<\/strong><\/p>\n<p><strong>\u300cHAVING\u300d\u53e5\uff1a\u300cGROUP BY\u300d\u53e5\u306e\u5b9f\u884c\u5f8c\u306b\u3001\u30b0\u30eb\u30fc\u30d7\uff08\u96c6\u8a08\u7d50\u679c\uff09\u306b\u5bfe\u3057\u3066\u6761\u4ef6\u304c\u9069\u7528\u3055\u308c\u308b<\/strong><\/p>\n<\/div>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_where_having_flow.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"FROM\u2192WHERE\u2192GROUP BY\u2192HAVING\u306e\u9806\u306b\u3001\u884c\u3068\u30b0\u30eb\u30fc\u30d7\u304c\u7d5e\u308a\u8fbc\u307e\u308c\u308b\u6d41\u308c\u306e\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"c-user01\" style=\"font-weight:bold;\">\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u524d\u306b\u4efb\u610f\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30ec\u30b3\u30fc\u30c9\u3092\u7701\u304f\u5834\u5408\u306f\u300cWHERE\u300d\u53e5\u3092\u4f7f\u3044\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u5f8c\u306b\u4efb\u610f\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u30b0\u30eb\u30fc\u30d7\u3092\u7701\u304f\u5834\u5408\u306b\u300cHAVING\u300d\u53e5\u3092\u4f7f\u3044\u307e\u3059<\/span>\u3002COUNT\u3084SUM\u306a\u3069\u96c6\u8a08\u7d50\u679c\u3092\u4f7f\u3063\u305f\u6761\u4ef6\u306fHAVING\u306b\u3057\u304b\u66f8\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_2\" class=\"wp-block-heading\">WHERE\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u524d\u306e\u884c\u3092\u7d5e\u308a\u8fbc\u3080<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cGROUP BY\u300d\u53e5\u3068\u300cWHERE\u300d\u53e5\u306e\u4f75\u7528\u4f8b\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u300c\u30c6\u30b9\u30c8\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u7528\u3044\u3066\u3001\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u304c60\u70b9\u672a\u6e80\u306e\u751f\u5f92\u3092\u9664\u3044\u305f\u4eba\u6570\u3092\u7537\u5973\u5225\u3067\u8868\u793a\u3055\u305b\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, COUNT(*) AS \u4eba\u6570 FROM \u30c6\u30b9\u30c8 WHERE \u70b9\u6570 &gt;= 60 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+------+\n| \u6027\u5225 | \u4eba\u6570 |\n+------+------+\n| \u7537   |  3   |\n| \u5973   |  3   |\n+------+------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_where_v2.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"WHERE\u306760\u70b9\u672a\u6e80\u306e\u884c\u3092\u9664\u3044\u3066\u304b\u3089\u6027\u5225\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u4eba\u6570\u3092\u6570\u3048\u308b\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b0\u30eb\u30fc\u30d7\u5316\u306e\u524d\u306b60\u70b9\u672a\u6e80\u306e\u571f\u5c4b\u3055\u3093\u304c\u9664\u304b\u308c\u305f\u3053\u3068\u3067\u300160\u70b9\u4ee5\u4e0a\u306e\u751f\u5f92\u306f\u7537\u5b50\u304c3\u540d\u3001\u5973\u5b50\u304c3\u540d\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u3053\u3061\u3089\u306e\u8a18\u4e8b\u3067\u300cWHERE\u300d\u53e5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u305c\u3072\u3053\u3061\u3089\u3082\u3054\u89a7\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<div class=\"techmania-recirc\">\n<style>\n.techmania-recirc{margin:24px 0;font-family:-apple-system,\"Hiragino Kaku Gothic ProN\",\"Yu Gothic\",sans-serif;}\n.techmania-recirc__label{font-size:14px;color:#333;margin-bottom:8px;font-weight:bold;}\n.techmania-recirc__list{display:flex;flex-direction:column;gap:12px;}\n.techmania-recirc__box{display:flex;align-items:center;gap:16px;border:1px solid #ddd;border-radius:4px;padding:12px 16px;text-decoration:none;transition:background .2s;}\n.techmania-recirc__box:hover{background:#f7f9fc;}\n.techmania-recirc__thumb{width:96px;aspect-ratio:6\/4;object-fit:cover;border-radius:4px;flex-shrink:0;}\n.techmania-recirc__title{color:#2952cc;font-size:15px;line-height:1.6;flex:1;}\n.techmania-recirc__arrow{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:#2952cc;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;}\n<\/style>\n<div class=\"techmania-recirc__label\">\u25bc\u3042\u308f\u305b\u3066\u30c1\u30a7\u30c3\u30af\u25bc<\/div>\n<div class=\"techmania-recirc__list\">\n<a class=\"techmania-recirc__box\" href=\"https:\/\/techmania.jp\/blog\/sql0003\/\">\n  <img decoding=\"async\" class=\"techmania-recirc__thumb\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/iStock-1279561653.webp\" alt=\"\u3010SQL\u5165\u9580\u3011WHERE\u3067\u691c\u7d22\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\" loading=\"lazy\">\n  <span class=\"techmania-recirc__title\">\u3010SQL\u5165\u9580\u3011WHERE\u3067\u691c\u7d22\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac<\/span>\n  <span class=\"techmania-recirc__arrow\">\u25b6<\/span>\n<\/a>\n<\/div>\n<\/div>\n\n\n\n<h3 id=\"outline__4_3\" class=\"wp-block-heading\">HAVING\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u5f8c\u306e\u96c6\u8a08\u7d50\u679c\u3092\u7d5e\u308a\u8fbc\u3080<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d9a\u3044\u3066\u3001\u300cGROUP BY\u300d\u53e5\u3068\u300cHAVING\u300d\u53e5\u306e\u4f75\u7528\u4f8b\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u300c\u30c6\u30b9\u30c8\u300d\u30c6\u30fc\u30d6\u30eb\u306e\u3046\u3061\u3001\u4eba\u6570\u304c3\u4eba\u4ee5\u4e0b\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u307f\u8868\u793a\u3055\u305b\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, COUNT(*) AS \u4eba\u6570 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225 HAVING COUNT(*) &lt;= 3;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+------+\n| \u6027\u5225 | \u4eba\u6570 |\n+------+------+\n| \u7537   |  3   |\n+------+------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_having_v2.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u6027\u5225\u3054\u3068\u306e\u4eba\u6570\u3092\u96c6\u8a08\u3057\u305f\u5f8c\u3001HAVING\u30673\u4eba\u4ee5\u4e0b\u306e\u30b0\u30eb\u30fc\u30d7\u3060\u3051\u3092\u6b8b\u3059\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eba\u6570\u304c4\u4eba\u306e\u5973\u5b50\u306e\u30b0\u30eb\u30fc\u30d7\u304c\u9664\u304b\u308c\u305f\u3053\u3068\u3067\u3001\u7537\u5b50\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u307f\u304c\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HAVING\u306e\u6761\u4ef6\u306b\u306f\u3001\u300cHAVING \u4eba\u6570 &lt;= 3\u300d\u306e\u3088\u3046\u306bSELECT\u53e5\u3067\u4ed8\u3051\u305f\u5225\u540d\uff08\u4eba\u6570\uff09\u3092\u66f8\u304b\u305a\u3001\u300cCOUNT(*)\u300d\u306e\u3088\u3046\u306b\u96c6\u8a08\u5f0f\u3092\u305d\u306e\u307e\u307e\u66f8\u304d\u307e\u3057\u3087\u3046\u3002\u5225\u540d\u3092\u4f7f\u3063\u305f\u66f8\u304d\u65b9\u306fMySQL\u306a\u3069\u3067\u306f\u52d5\u304d\u307e\u3059\u304c\u3001PostgreSQL\u3084SQL Server\u3067\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\uff08\u8a73\u3057\u304f\u306f<a href=\"#faq-alias\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/a>\u3067\u89e3\u8aac\u3057\u307e\u3059\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cHAVING\u300d\u53e5\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u65b9\u306f\u3001\u3053\u3061\u3089\u306e\u8a18\u4e8b\u3082\u304a\u8aad\u307f\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<div class=\"techmania-recirc\">\n<style>\n.techmania-recirc{margin:24px 0;font-family:-apple-system,\"Hiragino Kaku Gothic ProN\",\"Yu Gothic\",sans-serif;}\n.techmania-recirc__label{font-size:14px;color:#333;margin-bottom:8px;font-weight:bold;}\n.techmania-recirc__list{display:flex;flex-direction:column;gap:12px;}\n.techmania-recirc__box{display:flex;align-items:center;gap:16px;border:1px solid #ddd;border-radius:4px;padding:12px 16px;text-decoration:none;transition:background .2s;}\n.techmania-recirc__box:hover{background:#f7f9fc;}\n.techmania-recirc__thumb{width:96px;aspect-ratio:6\/4;object-fit:cover;border-radius:4px;flex-shrink:0;}\n.techmania-recirc__title{color:#2952cc;font-size:15px;line-height:1.6;flex:1;}\n.techmania-recirc__arrow{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:#2952cc;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;}\n<\/style>\n<div class=\"techmania-recirc__label\">\u25bc\u3042\u308f\u305b\u3066\u30c1\u30a7\u30c3\u30af\u25bc<\/div>\n<div class=\"techmania-recirc__list\">\n<a class=\"techmania-recirc__box\" href=\"https:\/\/techmania.jp\/blog\/sql-having\/\">\n  <img decoding=\"async\" class=\"techmania-recirc__thumb\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/sql-having0.webp\" alt=\"\u3010SQL\u3011HAVING\u306e\u4f7f\u3044\u65b9\u3068WHERE\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac\" loading=\"lazy\">\n  <span class=\"techmania-recirc__title\">\u3010SQL\u3011HAVING\u306e\u4f7f\u3044\u65b9\u3068WHERE\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac<\/span>\n  <span class=\"techmania-recirc__arrow\">\u25b6<\/span>\n<\/a>\n<\/div>\n<\/div>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">ORDER BY\u3067\u96c6\u8a08\u7d50\u679c\u3092\u4e26\u3073\u66ff\u3048\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cORDER BY\u300d\u53e5\u3068\u306f\u3001\u4efb\u610f\u306e\u30ab\u30e9\u30e0\uff08\u5217\uff09\u306b\u57fa\u3065\u3044\u3066\u7d50\u679c\u3092\u30bd\u30fc\u30c8\uff08\u4e26\u3073\u66ff\u3048\uff09\u3059\u308b\u53e5\u3067\u3059\u3002<span class=\"c-user01\" style=\"font-weight:bold;\">GROUP BY\u3060\u3051\u3067\u306f\u7d50\u679c\u306e\u4e26\u3073\u9806\u306f\u4fdd\u8a3c\u3055\u308c\u306a\u3044<\/span>\u305f\u3081\u3001\u6c7a\u307e\u3063\u305f\u9806\u756a\u3067\u8868\u793a\u3057\u305f\u3044\u3068\u304d\u306f\u5fc5\u305aORDER BY\u3092\u4ed8\u3051\u307e\u3057\u3087\u3046\u3002\u3053\u3053\u307e\u3067\u306e\u4f8b\u3067\u300c\u7537\u300d\u300c\u5973\u300d\u306e\u9806\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u305f\u306e\u306f\u3001\u305f\u307e\u305f\u307e\u305d\u306e\u9806\u756a\u306b\u306a\u3063\u3066\u3044\u305f\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3068\u3057\u3066\u3001\u6027\u5225\u3054\u3068\u306b\u307e\u3068\u3081\u305f\u30b0\u30eb\u30fc\u30d7\u3092\u4eba\u6570\u306e\u591a\u3044\u9806\u306b\u4e26\u3073\u66ff\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6027\u5225, COUNT(*) AS \u4eba\u6570 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225 ORDER BY \u4eba\u6570 DESC;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+------+------+\n| \u6027\u5225 | \u4eba\u6570 |\n+------+------+\n| \u5973   |  4   |\n| \u7537   |  3   |\n+------+------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_orderby_v2.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"\u6027\u5225\u3054\u3068\u306e\u4eba\u6570\u3092ORDER BY DESC\u3067\u591a\u3044\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cORDER BY\u300d\u53e5\u3092\u4f75\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4eba\u6570\u306e\u591a\u3044\u30b0\u30eb\u30fc\u30d7\u304b\u3089\u5c11\u306a\u3044\u30b0\u30eb\u30fc\u30d7\u306e\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002ORDER BY\u306f\u51e6\u7406\u9806\u306e\u6700\u5f8c\u306b\u5b9f\u884c\u3055\u308c\u308b\u305f\u3081\u3001SELECT\u53e5\u3067\u4ed8\u3051\u305f\u5225\u540d\uff08\u4eba\u6570\uff09\u3092\u305d\u306e\u307e\u307e\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30a8\u30ea\u306e\u6700\u5f8c\u306b\u8a18\u8ff0\u3057\u3066\u3044\u308b\u300cDESC\u300d\u306f&#8221;descending&#8221;\uff08\u4e0b\u3063\u3066\u3044\u308b\uff09\u306e\u7565\u79f0\u3067\u3001\u300c\u964d\u9806\u300d\uff08\u5927\u304d\u3044\u3082\u306e\u304b\u3089\u5c0f\u3055\u3044\u3082\u306e\u3078\u4e0b\u3063\u3066\u3044\u304f\u4e26\u3073\u9806\uff09\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cd\u5bfe\u306b\u3001\u6607\u9806\uff08\u5024\u304c\u5c0f\u3055\u3044\u3082\u306e\u304b\u3089\u5927\u304d\u3044\u3082\u306e\u3078\uff09\u306e\u5834\u5408\u306f\u300cASC\u300d\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u3061\u3089\u306f&#8221;ascending&#8221;\uff08\u4e0a\u3063\u3066\u3044\u308b\uff09\u306e\u7565\u79f0\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"techmania-recirc\">\n<style>\n.techmania-recirc{margin:24px 0;font-family:-apple-system,\"Hiragino Kaku Gothic ProN\",\"Yu Gothic\",sans-serif;}\n.techmania-recirc__label{font-size:14px;color:#333;margin-bottom:8px;font-weight:bold;}\n.techmania-recirc__list{display:flex;flex-direction:column;gap:12px;}\n.techmania-recirc__box{display:flex;align-items:center;gap:16px;border:1px solid #ddd;border-radius:4px;padding:12px 16px;text-decoration:none;transition:background .2s;}\n.techmania-recirc__box:hover{background:#f7f9fc;}\n.techmania-recirc__thumb{width:96px;aspect-ratio:6\/4;object-fit:cover;border-radius:4px;flex-shrink:0;}\n.techmania-recirc__title{color:#2952cc;font-size:15px;line-height:1.6;flex:1;}\n.techmania-recirc__arrow{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:#2952cc;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;}\n<\/style>\n<div class=\"techmania-recirc__label\">\u25bc\u3042\u308f\u305b\u3066\u30c1\u30a7\u30c3\u30af\u25bc<\/div>\n<div class=\"techmania-recirc__list\">\n<a class=\"techmania-recirc__box\" href=\"https:\/\/techmania.jp\/blog\/sql-order-by\/\">\n  <img decoding=\"async\" class=\"techmania-recirc__thumb\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/sql_order0.jpg\" alt=\"\u3010SQL\u3011ORDER BY\u306e\u30bd\u30fc\u30c8\u306e\u57fa\u672c\u3001\u8907\u6570\u6761\u4ef6\u306e\u4e26\u3073\u66ff\u3048\u306b\u3064\u3044\u3066\u89e3\u8aac\" loading=\"lazy\">\n  <span class=\"techmania-recirc__title\">\u3010SQL\u3011ORDER BY\u306e\u30bd\u30fc\u30c8\u306e\u57fa\u672c\u3001\u8907\u6570\u6761\u4ef6\u306e\u4e26\u3073\u66ff\u3048\u306b\u3064\u3044\u3066\u89e3\u8aac<\/span>\n  <span class=\"techmania-recirc__arrow\">\u25b6<\/span>\n<\/a>\n<\/div>\n<\/div>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\">GROUP BY\u3068\u4f3c\u305f\u69cb\u6587\u3068\u306e\u9055\u3044<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GROUP BY\u3068\u4f3c\u305f\u50cd\u304d\u3092\u3059\u308b\u69cb\u6587\u306b\u3001DISTINCT\u3068PARTITION BY\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u9055\u3044\u3092\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__6_1\" class=\"wp-block-heading\">DISTINCT\u3068\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DISTINCT\u306f\u3001SELECT\u306e\u7d50\u679c\u304b\u3089\u91cd\u8907\u3057\u305f\u884c\u3092\u53d6\u308a\u9664\u304f\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002\u6b21\u306e2\u3064\u306e\u30af\u30a8\u30ea\u306f\u3001\u3069\u3061\u3089\u3082\u300c\u7537\u300d\u300c\u5973\u300d\u306e2\u884c\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT DISTINCT \u6027\u5225 FROM \u30c6\u30b9\u30c8;\nSELECT \u6027\u5225 FROM \u30c6\u30b9\u30c8 GROUP BY \u6027\u5225;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u9055\u3044\u306f\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">GROUP BY\u306f\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u96c6\u8a08\u95a2\u6570\u3067\u8a08\u7b97\u3067\u304d\u308b<\/span>\u70b9\u3067\u3059\u3002\u91cd\u8907\u3092\u53d6\u308a\u9664\u3044\u305f\u4e00\u89a7\u304c\u6b32\u3057\u3044\u3060\u3051\u306a\u3089DISTINCT\u3001\u4eba\u6570\u3084\u5408\u8a08\u306a\u3069\u3092\u6c42\u3081\u305f\u3044\u306a\u3089GROUP BY\u3092\u4f7f\u3046\u3068\u3001\u30af\u30a8\u30ea\u306e\u610f\u56f3\u304c\u4f1d\u308f\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DISTINCT\u306e\u4f7f\u3044\u65b9\u306f\u3001<a href=\"https:\/\/techmania.jp\/blog\/sql-distinct\/\" target=\"_blank\" rel=\"noopener\">DISTINCT\u306e\u89e3\u8aac\u8a18\u4e8b<\/a>\u3067\u8a73\u3057\u304f\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__6_2\" class=\"wp-block-heading\">PARTITION BY\uff08\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\uff09\u3068\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PARTITION BY<\/strong>\u3082\u3001GROUP BY\u3068\u540c\u3058\u3088\u3046\u306b\u57fa\u6e96\u3068\u306a\u308b\u5217\u3067\u30c7\u30fc\u30bf\u3092\u30b0\u30eb\u30fc\u30d7\u306b\u5206\u3051\u308b\u50cd\u304d\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001PARTITION BY\u306f\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d\uff08SUM() OVER\u3084RANK\u306a\u3069\uff09\u306e\u4e2d\u3067\u4f7f\u3044\u3001<span class=\"c-user01\" style=\"font-weight:bold;\">\u884c\u30921\u884c\u306b\u307e\u3068\u3081\u305a\u306b\u3001\u5143\u306e\u884c\u6570\u3092\u4fdd\u3063\u305f\u307e\u307e\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u8a08\u7b97\u7d50\u679c\u3092\u5404\u884c\u306b\u8868\u793a\u3057\u307e\u3059<\/span>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u30af\u30a8\u30ea\u306f\u3001\u6027\u5225\u3054\u3068\u306e\u5e73\u5747\u70b9\u3092\u3001\u751f\u5f921\u4eba\u3072\u3068\u308a\u306e\u884c\u306b\u4e26\u3079\u3066\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6c0f\u540d, \u6027\u5225, \u70b9\u6570,\n       AVG(\u70b9\u6570) OVER (PARTITION BY \u6027\u5225) AS \u6027\u5225\u5e73\u5747\nFROM \u30c6\u30b9\u30c8\nORDER BY id;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+--------+------+------+----------+\n| \u6c0f\u540d   | \u6027\u5225 | \u70b9\u6570 | \u6027\u5225\u5e73\u5747 |\n+--------+------+------+----------+\n| \u79cb\u5c71   | \u7537   |  80  | 81.6667  |\n| \u4e45\u4fdd\u7530 | \u5973   | 100  | 70.0000  |\n| \u4f50\u3005\u6728 | \u5973   |  65  | 70.0000  |\n| \u4f50\u85e4   | \u7537   |  75  | 81.6667  |\n| \u9234\u6728   | \u5973   |  60  | 70.0000  |\n| \u7530\u4e2d   | \u7537   |  90  | 81.6667  |\n| \u571f\u5c4b   | \u5973   |  55  | 70.0000  |\n+--------+------+------+----------+<\/code><\/pre>\n\n\n\n<br><img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/groupby_vs_partition.webp\" width=\"700\" height=\"394\" class=\"post-img\" alt=\"GROUP BY\u3067\u306f2\u884c\u3001PARTITION BY\u3067\u306f7\u884c\u306e\u307e\u307e\u5e73\u5747\u304c\u8868\u793a\u3055\u308c\u308b\u9055\u3044\u306e\u56f3\" loading=\"lazy\"><br>\n\n\n\n<p class=\"wp-block-paragraph\">GROUP BY\u3067\u5e73\u5747\u3092\u6c42\u3081\u308b\u3068\u7d50\u679c\u306f2\u884c\u306b\u306a\u308a\u307e\u3059\u304c\u3001PARTITION BY\u3067\u306f7\u884c\u306e\u307e\u307e\u3001\u5404\u884c\u306b\u6027\u5225\u3054\u3068\u306e\u5e73\u5747\u70b9\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u300c\u81ea\u5206\u306e\u70b9\u6570\u3068\u5e73\u5747\u70b9\u3092\u6bd4\u3079\u305f\u3044\u300d\u306e\u3088\u3046\u306b\u3001\u5143\u306e\u884c\u3068\u96c6\u8a08\u7d50\u679c\u3092\u4e26\u3079\u305f\u3044\u3068\u304d\u306fPARTITION BY\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u203b\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306f\u3001MySQL\u3067\u306f8.0\u4ee5\u964d\u3001SQLite\u3067\u306f3.25\u4ee5\u964d\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__7\" class=\"wp-block-heading\">GROUP BY\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 id=\"outline__7_1\" class=\"wp-block-heading\" id=\"faq-alias\">GROUP BY\u3084HAVING\u3067\u5225\u540d\uff08\u30a8\u30a4\u30ea\u30a2\u30b9\uff09\u306f\u4f7f\u3048\u308b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002SELECT\u53e5\u3067\u300cAS \u4eba\u6570\u300d\u306e\u3088\u3046\u306b\u4ed8\u3051\u305f\u5225\u540d\u3092GROUP BY\u30fbHAVING\u3067\u4f7f\u3048\u308b\u304b\u3069\u3046\u304b\u306f\u3001\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9<\/strong><\/td><td><strong>GROUP BY\u3067\u5225\u540d<\/strong><\/td><td><strong>HAVING\u3067\u5225\u540d<\/strong><\/td><\/tr><tr><td>MySQL<\/td><td>\u4f7f\u3048\u308b<\/td><td>\u4f7f\u3048\u308b<\/td><\/tr><tr><td>SQLite<\/td><td>\u4f7f\u3048\u308b<\/td><td>\u4f7f\u3048\u308b<\/td><\/tr><tr><td>PostgreSQL<\/td><td>\u4f7f\u3048\u308b<\/td><td>\u4f7f\u3048\u306a\u3044<\/td><\/tr><tr><td>SQL Server<\/td><td>\u4f7f\u3048\u306a\u3044<\/td><td>\u4f7f\u3048\u306a\u3044<\/td><\/tr><tr><td>Oracle\uff0821c\u4ee5\u524d\uff09<\/td><td>\u4f7f\u3048\u306a\u3044<\/td><td>\u4f7f\u3048\u306a\u3044<\/td><\/tr><tr><td>Oracle\uff0823ai\u4ee5\u964d\uff09<\/td><td>\u4f7f\u3048\u308b<\/td><td>\u4f7f\u3048\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u3082\u52d5\u304f\u3088\u3046\u306b\u3059\u308b\u306b\u306f\u3001GROUP BY\u3084HAVING\u306b\u306f\u5225\u540d\u3067\u306f\u306a\u304f\u5143\u306e\u5217\u540d\u3084\u96c6\u8a08\u5f0f\uff08COUNT(*)\u306a\u3069\uff09\u3092\u66f8\u304d\u307e\u3057\u3087\u3046\u3002\u306a\u304a\u3001ORDER BY\u3067\u306f\u3069\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u3082\u5225\u540d\u3092\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__7_2\" class=\"wp-block-heading\">\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u6700\u5927\u5024\u3092\u6301\u3064\u884c\uff08\u6c0f\u540d\u306a\u3069\uff09\u3092\u53d6\u308a\u51fa\u3059\u306b\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u7537\u5973\u305d\u308c\u305e\u308c\u306e\u6700\u9ad8\u5f97\u70b9\u8005\u306e\u6c0f\u540d\u300d\u306e\u3088\u3046\u306b\u3001\u6700\u5927\u5024\u3092\u6301\u3064\u884c\u5168\u4f53\u3092\u53d6\u308a\u51fa\u3057\u305f\u3044\u5834\u5408\u3001GROUP BY\u3068MAX\u95a2\u6570\u3060\u3051\u3067\u306f\u6c0f\u540d\u3092\u8868\u793a\u3067\u304d\u307e\u305b\u3093\uff08SELECT\u53e5\u306e\u30eb\u30fc\u30eb\u3067\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\uff09\u3002\u3053\u306e\u5834\u5408\u306f\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306eROW_NUMBER\u3092\u4f7f\u3063\u3066\u3001\u30b0\u30eb\u30fc\u30d7\u5185\u3067\u9806\u4f4d\u3092\u4ed8\u3051\u3066\u304b\u30891\u4f4d\u306e\u884c\u3092\u53d6\u308a\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u30af\u30a8\u30ea\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u6c0f\u540d, \u6027\u5225, \u70b9\u6570\nFROM (\n  SELECT \u6c0f\u540d, \u6027\u5225, \u70b9\u6570,\n         ROW_NUMBER() OVER (PARTITION BY \u6027\u5225 ORDER BY \u70b9\u6570 DESC) AS \u9806\u4f4d\n  FROM \u30c6\u30b9\u30c8\n) t\nWHERE \u9806\u4f4d = 1;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+--------+------+------+\n| \u6c0f\u540d   | \u6027\u5225 | \u70b9\u6570 |\n+--------+------+------+\n| \u4e45\u4fdd\u7530 | \u5973   | 100  |\n| \u7530\u4e2d   | \u7537   |  90  |\n+--------+------+------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u70b9\u306e\u751f\u5f92\u3092\u3059\u3079\u3066\u8868\u793a\u3057\u305f\u3044\u5834\u5408\u306f\u3001ROW_NUMBER\u306e\u4ee3\u308f\u308a\u306bRANK\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__7_3\" class=\"wp-block-heading\">\u91cd\u8907\u3057\u3066\u3044\u308b\u30c7\u30fc\u30bf\uff082\u4ef6\u4ee5\u4e0a\u3042\u308b\u30c7\u30fc\u30bf\uff09\u3092\u63a2\u3059\u306b\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u8907\u3092\u8abf\u3079\u305f\u3044\u5217\u3067GROUP BY\u3057\u3001HAVING\u3067\u4ef6\u6570\u304c2\u4ef6\u4ee5\u4e0a\u306e\u30b0\u30eb\u30fc\u30d7\u3060\u3051\u3092\u6b8b\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u4f1a\u54e1\u30c6\u30fc\u30d6\u30eb\u3067\u3001\u540c\u3058\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c2\u56de\u4ee5\u4e0a\u767b\u9332\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u8abf\u3079\u308b\u30af\u30a8\u30ea\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-sql\" data-lang=\"SQL\"><code>SELECT \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9, COUNT(*) AS \u4ef6\u6570\nFROM \u4f1a\u54e1\nGROUP BY \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\nHAVING COUNT(*) &gt;= 2;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u679c\u306b\u306f\u3001\u91cd\u8907\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3068\u3001\u305d\u306e\u767b\u9332\u4ef6\u6570\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__8\" class=\"wp-block-heading\">SQL\u95a2\u9023\u8a18\u4e8b<\/h2>\n\n\n<div class=\"bgBox\">\n<ul>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql0002\/\" target=\"_blank\" rel=\"noopener\">RDB\u3092\u64cd\u4f5c\u3059\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a00\u8a9e<strong>\u300cSQL\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/nosql-notonlysql\/\" target=\"_blank\" rel=\"noopener\">RDB\u4ee5\u5916\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<strong>\u300cNoSQL\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/post-3185\/\" target=\"_blank\" rel=\"noopener\">RDB\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<strong>\u300cMySQL\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/postgresql\/\" target=\"_blank\" rel=\"noopener\">RDB\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<strong>\u300cPostgreSQL\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-server\/\" target=\"_blank\" rel=\"noopener\">RDB\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<strong>\u300cSQL Server\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sqlite\/\" target=\"_blank\" rel=\"noopener\">RDB\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<strong>\u300cSQLite\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-phpmyadmin\/\" target=\"_blank\" rel=\"noopener\">\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067MySQL\u3092\u7ba1\u7406\u3067\u304d\u308b<strong>\u300cphpMyAdmin\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-select\/\" target=\"_blank\" rel=\"noopener\">\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3059\u308b<strong>\u300cSELECT\u300d<\/strong>\u6587<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-insert\/\" target=\"_blank\" rel=\"noopener\">\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3059\u308b<strong>\u300cINSERT\u300d<\/strong>\u6587<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-delete\/\" target=\"_blank\" rel=\"noopener\">\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<strong>\u300cDELETE\u300d<\/strong>\u6587<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-update\/\" target=\"_blank\" rel=\"noopener\">\u30c7\u30fc\u30bf\u3092\u66f4\u65b0\u3059\u308b<strong>\u300cUPDATE\u300d<\/strong>\u6587<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql0003\/\" target=\"_blank\" rel=\"noopener\">\u62bd\u51fa\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b<strong>\u300cWHERE\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-having\/\" target=\"_blank\" rel=\"noopener\">\u62bd\u51fa\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b<strong>\u300cHAVING\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql0004\/\" target=\"_blank\" rel=\"noopener\">\u8907\u6570\u306e\u62bd\u51fa\u6761\u4ef6\u3092\u307e\u3068\u3081\u308b<strong>\u300cIN\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-distinct\/\" target=\"_blank\" rel=\"noopener\">\u91cd\u8907\u30ec\u30b3\u30fc\u30c9\u3092\u9664\u5916\u3059\u308b<strong>\u300cDISTINCT\u300d<\/strong><\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql0005\/\" target=\"_blank\" rel=\"noopener\">\u62bd\u51fa\u7bc4\u56f2\u3092\u6307\u5b9a\u3059\u308b<strong>\u300cBETWEEN\u300d<\/strong>\u6f14\u7b97\u5b50<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-exists\/\" target=\"_blank\" rel=\"noopener\">\u62bd\u51fa\u6761\u4ef6\u3092\u6e80\u305f\u3059\u30ec\u30b3\u30fc\u30c9\u306e\u5b58\u5728\u306e\u6709\u7121\u3092\u8abf\u3079\u308b<strong>\u300cEXISTS\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-count\/\" target=\"_blank\" rel=\"noopener\">\u30ec\u30b3\u30fc\u30c9\u4ef6\u6570\u3092\u53d6\u5f97\u3059\u308b\u96c6\u8a08\u95a2\u6570<strong>\u300cCOUNT\u300d<\/strong>\u95a2\u6570<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-order-by\/\" target=\"_blank\" rel=\"noopener\">\u62bd\u51fa\u7d50\u679c\u3092\u4e26\u3073\u66ff\u3048\u308b<strong>\u300cORDER BY\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-join\/\" target=\"_blank\" rel=\"noopener\">\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u30c7\u30fc\u30bf\u3092\u7d50\u5408\u3059\u308b<strong>\u300cJOIN\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-inner-join\/\" target=\"_blank\" rel=\"noopener\">\u5185\u90e8\u7d50\u5408<strong>\u300cINNER JOIN\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-union\/\" target=\"_blank\" rel=\"noopener\">\u62bd\u51fa\u7d50\u679c\u3092\u7d71\u5408\u3057\u3066\u8868\u793a\u3059\u308b<strong>\u300cUNION\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-like\/\" target=\"_blank\" rel=\"noopener\">\u30c7\u30fc\u30bf\u306e\u66d6\u6627\u691c\u7d22<strong>\u300cLIKE\u300d<\/strong>\u53e5<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-case\/\" target=\"_blank\" rel=\"noopener\">\u6761\u4ef6\u5206\u5c90\u51e6\u7406<strong>\u300cCASE\u300d<\/strong>\u5f0f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-trim\/\" target=\"_blank\" rel=\"noopener\">\u6587\u5b57\u5217\u306e\u4f59\u767d\u3092\u53d6\u308a\u9664\u304f<strong>\u300cTRIM\u300d<\/strong>\u95a2\u6570<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-null\/\" target=\"_blank\" rel=\"noopener\"><strong>\u300cNULL\u300d<\/strong>\u306e\u6271\u3044\u65b9<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-primary-key\/\" target=\"_blank\" rel=\"noopener\"><strong>\u300c\u4e3b\u30ad\u30fc\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<li><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/techmania.jp\/blog\/sql-foreign-key\/\" target=\"_blank\" rel=\"noopener\"><strong>\u300c\u5916\u90e8\u30ad\u30fc\u300d<\/strong>\u3068\u306f\uff1f<\/a><\/span><\/li>\n<\/ul>\n<\/div>\n\n\n<h2 id=\"outline__9\" class=\"wp-block-heading\">SQL\u306e\u52c9\u5f37\u65b9\u6cd5\u306f\uff1f<\/h2>\n\n\n<p>\u66f8\u7c4d\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u5b66\u7fd2\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u6628\u4eca\u3067\u306f\u3001YouTube\u306a\u3069\u306e\u52d5\u753b\u30b5\u30a4\u30c8\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30a4\u30c8\u306a\u3069\u3082\u5145\u5b9f\u3057\u3066\u3044\u3066\u591a\u304f\u306e\u60c5\u5831\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002<br 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class=\"markerYellow\"><strong>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u306a\u3089\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u304c\u304a\u3059\u3059\u3081\uff01<\/strong><\/span><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/yuudou.png\" alt=\"\u300c\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u306a\u308a\u305f\u3044\u300d\u300c\u5b9f\u8df5\u30b9\u30ad\u30eb\u3092\u3064\u3051\u305f\u3044\u300d\u3068\u60a9\u3080\u4eba\u306e\u30a4\u30e9\u30b9\u30c8\" class=\"post-img\" loading=\"lazy\">\n\n\n<p>IT\u30b9\u30ad\u30eb\u9700\u8981\u306e\u9ad8\u307e\u308a\u3068\u3068\u3082\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3082\u5897\u3048\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3069\u306e\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3046\u3079\u304d\u304b\u8ff7\u3063\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u3093\u306a\u65b9\u306b\u306f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\uff01\u3053\u308c\u307e\u3067\u591a\u304f\u306eIT\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u80b2\u6210\u30fb\u8f29\u51fa\u3057\u3066\u304d\u305f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3067\u3082\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3092\u958b\u8b1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"bgBox\">\n<p><strong>\uff1c\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306e\u7279\u5fb4\uff1e<\/strong><br 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