{"id":5879,"date":"2023-09-29T19:33:01","date_gmt":"2023-09-29T10:33:01","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=5879"},"modified":"2024-01-24T15:05:59","modified_gmt":"2024-01-24T06:05:59","slug":"sql-distinct","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/sql-distinct\/","title":{"rendered":"\u3010SQL\u3011DISTINCT\u3067\u91cd\u8907\u884c\u3092\u9664\u5916\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac"},"content":{"rendered":"\n<p>\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306fSQL\u306eDISTINCT\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002DISTINCT\u306e\u69d8\u3005\u306a\u5074\u9762\u3092\u7406\u89e3\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u306e\u5e45\u3092\u5e83\u3052\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"outline__1\" class=\"wp-block-heading\">DISTINCT\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>SQL\u306eDISTINCT\u306f\u3001\u4f55\u5ea6\u3082\u7e70\u308a\u8fd4\u3055\u308c\u308b\u30c7\u30fc\u30bf\u304b\u3089\u3001\u4e00\u3064\u3060\u3051\u3092\u53d6\u308a\u51fa\u3059\u4fbf\u5229\u306a\u6a5f\u80fd\u3067\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306f\u3001\u30c7\u30fc\u30bf\u3092\u6574\u7406\u3057\u305f\u308a\u3001\u8abf\u3079\u305f\u308a\u3059\u308b\u969b\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u57fa\u672c\u7684\u306b\u306f\u3001SELECT\u6587\u3068\u4e00\u7dd2\u306b\u4f7f\u3044\u307e\u3059\u3002\u4f7f\u3044\u65b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre>\nSELECT \n    DISTINCT \u5217\u540d\nFROM \n    \u30c6\u30fc\u30d6\u30eb\u540d;\n<\/pre>\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\u3054\u5e0c\u671b\u306b\u6cbf\u3063\u305f\u6848\u4ef6\u304c<span style=\"color: red;\">\u5fc5\u305a<\/span>\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\"><\/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;\">30<\/span>\u79d2\u3067<span style=\"color: red;\">\u7121\u6599\u304a\u554f\u3044\u5408\u308f\u305b<\/span>\u304b\u3089\u226a<\/p><\/a>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">DISTINCT\u306e\u4f7f\u3044\u65b9\u306f\uff1f<\/h2>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u308b\u300ccustomer\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<table border=\"1\">\n    <thead>\n        <tr>\n            <th>name<\/th>\n            <th>route<\/th>\n            <th>saved_date<\/th>\n            <th>price<\/th>\n        <\/tr>\n    <\/thead>\n    <tbody>\n        <tr>\n            <td>\u4f50\u85e4<\/td>\n            <td>ad1<\/td>\n            <td>2023-04-01 17:29:31<\/td>\n            <td>2100<\/td>\n        <\/tr>\n        <tr>\n            <td>\u9234\u6728<\/td>\n            <td>ad2<\/td>\n            <td>2023-04-05 13:10:45<\/td>\n            <td>3500<\/td>\n        <\/tr>\n        <tr>\n            <td>\u52a0\u85e4<\/td>\n            <td>ad1<\/td>\n            <td>2023-04-19 11:37:01<\/td>\n            <td>1300<\/td>\n        <\/tr>\n    <\/tbody>\n<\/table>\n\n\n\n<p>\u4e0a\u8a18\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u300croute\u300d\u5217\u306b\u306f \u201cad1\u201d \u3068 \u201cad2\u201d \u306e2\u7a2e\u985e\u306e\u5024\u304c\u5b58\u5728\u3057\u307e\u3059\u304c\u3001\u201cad1\u201d \u306f2\u884c\u3067\u91cd\u8907\u3057\u3066\u767b\u5834\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u3001DISTINCT\u304c\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<pre>\n-- \u91cd\u8907\u3059\u308b\u30c7\u30fc\u30bf\u3092\u6392\u9664\u3057\u3001\u91cd\u8907\u3057\u306a\u3044route\u306e\u5024\u306e\u307f\u3092\u9078\u629e\nSELECT \n    DISTINCT route\nFROM \n    customer;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u91cd\u8907\u3057\u305f &#8220;ad1&#8221; \u304c\u53d6\u308a\u9664\u304b\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<table border=\"1\">\n    <thead>\n        <tr>\n            <th>route<\/th>\n        <\/tr>\n    <\/thead>\n    <tbody>\n        <tr>\n            <td>ad1<\/td>\n        <\/tr>\n        <tr>\n            <td>ad2<\/td>\n        <\/tr>\n    <\/tbody>\n<\/table>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001DINTINCT\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4e2d\u304b\u3089\u91cd\u8907\u3059\u308b\u8981\u7d20\u3092\u52b9\u7387\u7684\u306b\u9664\u5916\u3057\u3066\u3001\u91cd\u8907\u3057\u3066\u3044\u306a\u3044\u5024\u306e\u4e00\u89a7\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">\u8907\u6570\u306e\u5217\u3067\u306eDINTINCT\u306e\u4f7f\u7528\u65b9\u6cd5<\/h2>\n\n\n\n<p>DISTINCT\u306f\u3001\u8907\u6570\u306e\u5217\u306b\u5bfe\u3057\u3066\u3082\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u6307\u5b9a\u3057\u305f\u8907\u6570\u306e\u5217\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u3067\u4e00\u5ea6\u3057\u304b\u8868\u793a\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u300ccustomer_2\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u7528\u3044\u3066\u5177\u4f53\u7684\u306a\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<table border=\"1\">\n    <thead>\n        <tr>\n            <th>name<\/th>\n            <th>route<\/th>\n            <th>saved_date<\/th>\n            <th>price<\/th>\n        <\/tr>\n    <\/thead>\n    <tbody>\n        <tr>\n            <td>\u4f50\u85e4<\/td>\n            <td><span style=\"color:red;\">ad1<\/span><\/td>\n            <td>2023-04-01 17:29:31<\/td>\n            <td><span style=\"color:red;\">2100<\/span><\/td>\n        <\/tr>\n        <tr>\n            <td>\u9234\u6728<\/td>\n            <td>ad2<\/td>\n            <td>2023-04-05 13:10:45<\/td>\n            <td>3500<\/td>\n        <\/tr>\n        <tr>\n            <td>\u52a0\u85e4<\/td>\n            <td>ad1<\/td>\n            <td>2023-04-19 11:37:01<\/td>\n            <td>1300<\/td>\n        <\/tr>\n        <tr>\n            <td>\u7530\u4e2d<\/td>\n            <td><span style=\"color:red;\">ad1<\/span><\/td>\n            <td>2023-04-21 15:45:00<\/td>\n            <td><span style=\"color:red;\">2100<\/span><\/td>\n        <\/tr>\n    <\/tbody>\n<\/table>\n\n\n\n<p>\u3053\u306e\u300ccustomer_2\u300d\u30c6\u30fc\u30d6\u30eb\u3067\u300croute\u300d\u5217\u3068\u300cprice\u300d\u5217\u3092\u898b\u308b\u3068\u30014\u884c\u76ee\u306e \u201cad1\u201d \u3068 \u201c2100\u201d \u306e\u7d44\u307f\u5408\u308f\u305b\u304c1\u884c\u76ee\u3068\u540c\u3058\u3067\u3059\u3002\u3053\u306e\u305f\u3081\u3001DINTINCT\u3092\u8907\u6570\u306e\u5217\u306b\u9069\u7528\u3059\u308b\u3088\u3046\u306b\u3001\u4ee5\u4e0b\u306eSQL\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre>\n-- route\u3068price\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3001\u540c\u3058\u7d44\u307f\u5408\u308f\u305b\u30921\u3064\u3060\u3051\u53d6\u5f97\u3059\u308b\nSELECT \n    DISTINCT route, price\nFROM \n    customer;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30af\u30a8\u30ea\u306e\u7d50\u679c\u3001\u540c\u3058 route \u3068 price \u306e\u7d44\u307f\u5408\u308f\u305b\u306f1\u3064\u3060\u3051\u51fa\u529b\u3055\u308c\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c6\u30fc\u30d6\u30eb\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<table border=\"1\">\n    <thead>\n        <tr>\n            <th>route<\/th>\n            <th>price<\/th>\n        <\/tr>\n    <\/thead>\n    <tbody>\n        <tr>\n            <td>ad1<\/td>\n            <td>2100<\/td>\n        <\/tr>\n        <tr>\n            <td>ad2<\/td>\n            <td>3500<\/td>\n        <\/tr>\n        <tr>\n            <td>ad1<\/td>\n            <td>1300<\/td>\n        <\/tr>\n    <\/tbody>\n<\/table>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u8907\u6570\u306e\u5217\u3067DINTINCT\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u5217\u306e\u7d44\u307f\u5408\u308f\u305b\u304c1\u3064\u3060\u3051\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">DISTINCT\u3068GROUP BY\u306e\u9055\u3044\u306f\uff1f<\/h2>\n\n\n\n<p>GROUP BY\u3082\u91cd\u8907\u30c7\u30fc\u30bf\u3092\u9664\u5916\u3059\u308b\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002GROUP BY\u304cDISTINCT\u3068\u9055\u3046\u70b9\u306f\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u96c6\u8a08\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3001\u3068\u3044\u3046\u90e8\u5206\u306b\u3042\u308a\u307e\u3059\u3002GROUP BY\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3084\u69cb\u6587\u306b\u3064\u3044\u3066\u5b66\u3073\u305f\u3044\u65b9\u306f\u3001<a href=\"https:\/\/techmania.jp\/blog\/sql-group-by\/\">\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-techmania wp-block-embed-techmania\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"QTTfZFsoHb\"><a href=\"https:\/\/techmania.jp\/blog\/sql-group-by\/\">\u3010SQL\u3011GROUP BY\u53e5\u30925\u5206\u3067\u7fd2\u5f97\uff01\u96c6\u8a08\u95a2\u6570\u3054\u3068\u306e\u4f7f\u3044\u65b9\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u3011GROUP BY\u53e5\u30925\u5206\u3067\u7fd2\u5f97\uff01\u96c6\u8a08\u95a2\u6570\u3054\u3068\u306e\u4f7f\u3044\u65b9\u3092\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql-group-by\/embed\/#?secret=ecKAwYZYH8#?secret=QTTfZFsoHb\" data-secret=\"QTTfZFsoHb\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 id=\"outline__4_1\" class=\"wp-block-heading\">DISTINCT\u3068GROUP BY\u306e\u9055\u3044\u3092\u5177\u4f53\u7684\u306b\u898b\u308b<\/h3>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u300ccustomer_2\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u4f8b\u306b\u3001DISTINCT\u3068GROUP BY\u306e\u9055\u3044\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>GROUP BY\u306f\u3001\u6307\u5b9a\u3057\u305f\u5217\u306e\u5024\u304c\u540c\u3058\u884c\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u305d\u306e\u4ed6\u306e\u5217\u306b\u96c6\u7d04\u95a2\u6570\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre>\n-- GROUP BY\u3092\u4f7f\u7528\u3057\u3066\u3001route\u3068price\u304c\u540c\u3058\u884c\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u5404\u30b0\u30eb\u30fc\u30d7\u306e\u884c\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\nSELECT \n    route, \n    price, \n    COUNT(name) AS row_count\nFROM \n    customer\nGROUP BY \n    route, \n    price;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30af\u30a8\u30ea\u3067\u306f\u3001route \u3068 price \u304c\u540c\u3058\u884c\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u305d\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u884c\u6570\uff08row_count\uff09\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u5b9f\u884c\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<table border=\"1\">\n    <thead>\n        <tr>\n            <th>route<\/th>\n            <th>price<\/th>\n            <th>row_count<\/th>\n        <\/tr>\n    <\/thead>\n    <tbody>\n        <tr>\n            <td>ad1<\/td>\n            <td>2100<\/td>\n            <td><span style=\"color:red;\">2<\/span><\/td>\n        <\/tr>\n        <tr>\n            <td>ad2<\/td>\n            <td>3500<\/td>\n            <td>1<\/td>\n        <\/tr>\n        <tr>\n            <td>ad1<\/td>\n            <td>1300<\/td>\n            <td>1<\/td>\n        <\/tr>\n    <\/tbody>\n<\/table>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001DISTINCT\u306f\u5358\u7d14\u306b\u6307\u5b9a\u5217\u306e\u91cd\u8907\u3092\u53d6\u308a\u9664\u304d\u307e\u3059\u304c\u3001GROUP BY\u306f\u5217\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u96c6\u7d04\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u8ffd\u52a0\u306e\u60c5\u5831\uff08\u3053\u3053\u3067\u306f\u5404\u30b0\u30eb\u30fc\u30d7\u306e\u884c\u6570\uff09\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001SQL\u306eDISTINCT\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002DISTINCT\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u3066\u4eca\u5f8c\u306e\u5206\u6790\u306b\u5f79\u7acb\u3066\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\">SQL\u306e\u52c9\u5f37\u65b9\u6cd5\u306f\uff1f<\/h2>\n\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>\u305d\u3057\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3059\u308b\u306b\u306f\u3001\u77e5\u8b58\u3092\u3064\u3051\u306a\u304c\u3089\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u307f\u308b\u306a\u3069\u3001\u30a4\u30f3\u30d7\u30c3\u30c8\u3068\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u72ec\u5b66\u306e\u5834\u5408\u306f\u3001\u6709\u8b58\u8005\u306b\u8cea\u554f\u304c\u3067\u304d\u305f\u308a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u3082\u3089\u3048\u308b\u3088\u3046\u306a\u74b0\u5883\u304c\u3042\u308b\u3068\u3001\u7406\u89e3\u5ea6\u304c\u6df1\u307e\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3001SQL\u306b\u9650\u3089\u305a\u3001IT\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u969b\u3001\u3069\u3046\u3057\u3066\u3082\u8ab2\u984c\u306b\u3076\u3064\u304b\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u7279\u306b\u72ec\u5b66\u3060\u3068\u3001\u308f\u304b\u3089\u306a\u3044\u90e8\u5206\u3092\u30d7\u30ed\u306b\u8cea\u554f\u3067\u304d\u308b\u6a5f\u4f1a\u3092\u78ba\u4fdd\u3057\u306b\u304f\u304f\u3001\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u304c\u7d9a\u304d\u306b\u304f\u3044\u3068\u3044\u3046\u5074\u9762\u304c\u3042\u308a\u307e\u3059\u3002\u72ec\u5b66\u3067\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3059\u308b\u81ea\u4fe1\u304c\u306a\u3044\u4eba\u306b\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3068\u3044\u3046\u624b\u3082\u3042\u308a\u307e\u3059\u3002\u8cbb\u7528\u306f\u639b\u304b\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u5206\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u3084\u3059\u3044\u3067\u3059\u3002\u3057\u3063\u304b\u308a\u3068\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3057\u3066\u5b9f\u8df5\u306b\u6d3b\u304b\u3057\u305f\u3044\u3068\u3044\u3046\u4eba\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p><span 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\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/yuudou.png\" class=\"post-img\">\n\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\n\n\n<div class=\"bgBox\">\n<p><strong>\uff1c\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306e\u7279\u5fb4\uff1e<\/strong><br><strong>\u30fb\u305f\u3057\u304b\u306a\u80b2\u6210\u5b9f\u7e3e\u3068\u89aa\u8eab\u306a\u6559\u80b2\u3000\uff5e\u30bb\u30ab\u30f3\u30c9\u30ad\u30e3\u30ea\u30a2\u3092\u5168\u529b\u652f\u63f4\uff5e<\/strong><br><strong>\u30fb\u8b1b\u5e2b\u304c\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u3000\uff5e\u201c\u672c\u5f53\u201d\u306e\u958b\u767a\u30ce\u30a6\u30cf\u30a6\u3092\u76f4\u306b\u5b66\u3079\u308b\uff5e<\/strong><br><strong>\u30fb\u5c02\u5c5e\u8b1b\u5e2b\u304c\u5b66\u7fd2\u3092\u5fb9\u5e95\u30b5\u30dd\u30fc\u30c8\u3000\uff5e\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3092\u5fb9\u5e95\u89e3\u6c7a\uff5e<\/strong><br><strong>\u30fb\u5b9f\u52d9\u30d9\u30fc\u30b9\u3067\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3000\uff5e\u5b9f\u8df5\u7684\u306a\u51dd\u7e2e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\uff5e<\/strong><\/p>\n<\/div>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u7279\u5fb4\u3092\u6301\u3064\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306fIT\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b9\u30bf\u30fc\u30c8\u30e9\u30a4\u30f3\u3068\u3057\u3066\u6700\u9069\u3067\u3059\u3002<br>\u8a71\u3092\u805e\u304d\u305f\u3044\u30fb\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u65b9\u306f<a href=\"https:\/\/techmania.jp\/lp\/2\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u304b\u3089\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><strong>\u25bcSQL<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"wuqUlv1TbL\"><a href=\"https:\/\/techmania.jp\/blog\/sql0002\/\">SQL\u3068\u306f\uff1f\u521d\u5fc3\u8005\u5411\u3051\u306b\u57fa\u790e\u77e5\u8b58\u304b\u3089\u5177\u4f53\u4f8b\u307e\u3067\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;SQL\u3068\u306f\uff1f\u521d\u5fc3\u8005\u5411\u3051\u306b\u57fa\u790e\u77e5\u8b58\u304b\u3089\u5177\u4f53\u4f8b\u307e\u3067\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql0002\/embed\/#?secret=ZsX1T5qB4S#?secret=wuqUlv1TbL\" data-secret=\"wuqUlv1TbL\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcMySQL<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"zNP0YrGjOA\"><a href=\"https:\/\/techmania.jp\/blog\/post-3185\/\">\u3010\u521d\u5fc3\u8005\u5411\u3051\u3011MySQL\u3068\u306f\uff1fSQL\u3068\u306e\u9055\u3044\u3084\u30e1\u30ea\u30c3\u30c8\u3001\u4f7f\u7528\u65b9\u6cd5\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010\u521d\u5fc3\u8005\u5411\u3051\u3011MySQL\u3068\u306f\uff1fSQL\u3068\u306e\u9055\u3044\u3084\u30e1\u30ea\u30c3\u30c8\u3001\u4f7f\u7528\u65b9\u6cd5\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/post-3185\/embed\/#?secret=BGauLSYlZj#?secret=zNP0YrGjOA\" data-secret=\"zNP0YrGjOA\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcWHERE<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"jjg9hJLEmd\"><a href=\"https:\/\/techmania.jp\/blog\/sql0003\/\">\u3010SQL\u5165\u95801\u3011WHERE\u3067\u691c\u7d22\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u5165\u95801\u3011WHERE\u3067\u691c\u7d22\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql0003\/embed\/#?secret=iZWXe9O7tV#?secret=jjg9hJLEmd\" data-secret=\"jjg9hJLEmd\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcIN<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"OQvZ61fLdO\"><a href=\"https:\/\/techmania.jp\/blog\/sql0004\/\">\u3010SQL\u5165\u9580\u3011IN\u53e5\u306e\u4f7f\u3044\u65b9\u3084\u30b5\u30d6\u30af\u30a8\u30ea\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u5165\u9580\u3011IN\u53e5\u306e\u4f7f\u3044\u65b9\u3084\u30b5\u30d6\u30af\u30a8\u30ea\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql0004\/embed\/#?secret=ECEAKeNpr9#?secret=OQvZ61fLdO\" data-secret=\"OQvZ61fLdO\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcCASE<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"Lf87V8U9bw\"><a href=\"https:\/\/techmania.jp\/blog\/sql-case\/\">5\u5206\u3067\u308f\u304b\u308bSQL\u306e\u6761\u4ef6\u5206\u5c90\u51e6\u7406\u300cCASE\u5f0f\u300d\u306e\u4f7f\u3044\u65b9\u3010\u5b8c\u5168\u7248\u3011<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;5\u5206\u3067\u308f\u304b\u308bSQL\u306e\u6761\u4ef6\u5206\u5c90\u51e6\u7406\u300cCASE\u5f0f\u300d\u306e\u4f7f\u3044\u65b9\u3010\u5b8c\u5168\u7248\u3011&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql-case\/embed\/#?secret=nPBi9YEMtL#?secret=Lf87V8U9bw\" data-secret=\"Lf87V8U9bw\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcLIKE<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"Fra52NTf4h\"><a href=\"https:\/\/techmania.jp\/blog\/sql-like\/\">\u3010SQL\u3011\u30c7\u30fc\u30bf\u306e\u66d6\u6627\u691c\u7d22\u300cLIKE\u53e5\u300d\u306e\u4f7f\u3044\u65b9\uff01\u5b8c\u5168\u4e00\u81f4\u30fb\u90e8\u5206\u4e00\u81f4\u30fb\u5426\u5b9a\u5f62\u3082\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u3011\u30c7\u30fc\u30bf\u306e\u66d6\u6627\u691c\u7d22\u300cLIKE\u53e5\u300d\u306e\u4f7f\u3044\u65b9\uff01\u5b8c\u5168\u4e00\u81f4\u30fb\u90e8\u5206\u4e00\u81f4\u30fb\u5426\u5b9a\u5f62\u3082\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql-like\/embed\/#?secret=M0Z36Tx5zx#?secret=Fra52NTf4h\" data-secret=\"Fra52NTf4h\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcBETWEEN<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"fLaRdEGOW7\"><a href=\"https:\/\/techmania.jp\/blog\/sql0005\/\">\u3010SQL\u5165\u95803\u3011between\u6f14\u7b97\u5b50\u3067\u62bd\u51fa\u3059\u308b\u7bc4\u56f2\u3092\u6307\u5b9a\u3059\u308b<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u5165\u95803\u3011between\u6f14\u7b97\u5b50\u3067\u62bd\u51fa\u3059\u308b\u7bc4\u56f2\u3092\u6307\u5b9a\u3059\u308b&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql0005\/embed\/#?secret=nyuPtE2g6V#?secret=fLaRdEGOW7\" data-secret=\"fLaRdEGOW7\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcEXISTS<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"ijSnew98vm\"><a href=\"https:\/\/techmania.jp\/blog\/sql-exists\/\">\u3010SQL\u3011EXISTS\u306e\u4f7f\u3044\u65b9\u3092\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u3011EXISTS\u306e\u4f7f\u3044\u65b9\u3092\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql-exists\/embed\/#?secret=XSlLNzmZPz#?secret=ijSnew98vm\" data-secret=\"ijSnew98vm\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcCOUNT<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"NvBSlu3d9c\"><a href=\"https:\/\/techmania.jp\/blog\/sql-count\/\">\u3010SQL\u3011COUNT\u95a2\u6570\u3067\u30ec\u30b3\u30fc\u30c9\u6570\u3092\u30ab\u30a6\u30f3\u30c8\uff01\u610f\u5473\u3068\u4f7f\u3044\u65b9\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u3011COUNT\u95a2\u6570\u3067\u30ec\u30b3\u30fc\u30c9\u6570\u3092\u30ab\u30a6\u30f3\u30c8\uff01\u610f\u5473\u3068\u4f7f\u3044\u65b9\u3092\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/sql-count\/embed\/#?secret=EEpzsCGurh#?secret=NvBSlu3d9c\" data-secret=\"NvBSlu3d9c\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<p><strong>\u25bcGROUP BY<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"QTTfZFsoHb\"><a href=\"https:\/\/techmania.jp\/blog\/sql-group-by\/\">\u3010SQL\u3011GROUP BY\u53e5\u30925\u5206\u3067\u7fd2\u5f97\uff01\u96c6\u8a08\u95a2\u6570\u3054\u3068\u306e\u4f7f\u3044\u65b9\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010SQL\u3011GROUP 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