{"id":1418,"date":"2026-07-19T12:00:00","date_gmt":"2026-07-19T03:00:00","guid":{"rendered":"https:\/\/www.ecoop.net\/memo\/?p=1418"},"modified":"2026-07-17T16:12:23","modified_gmt":"2026-07-17T07:12:23","slug":"sql-join-shorthand","status":"publish","type":"post","link":"https:\/\/www.ecoop.net\/memo\/archives\/sql-join-shorthand.html","title":{"rendered":"SQL \u306e JOIN \u306f\u7701\u7565\u3067\u304d\u308b \u2014 INNER\/OUTER \u30ad\u30fc\u30ef\u30fc\u30c9\u3068\u30ab\u30f3\u30de\u7d50\u5408\u306e\u6574\u7406"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c<code>JOIN<\/code> \u3068\u3060\u3051\u66f8\u3044\u305f\u3089 <code>INNER JOIN<\/code> \u306b\u306a\u308b\u306e\u304b\u300d\u300c<code>LEFT JOIN<\/code> \u3068 <code>LEFT OUTER JOIN<\/code> \u306f\u9055\u3046\u306e\u304b\u300d\u3068\u3044\u3046\u7591\u554f\u3078\u306e\u7b54\u3048\u3092\u5148\u306b\u66f8\u304f\u3068\u3001\u3069\u3061\u3089\u3082<strong>\u307e\u3063\u305f\u304f\u540c\u3058\u3082\u306e<\/strong>\u3067\u3059\u3002<code>INNER<\/code> \u3068 <code>OUTER<\/code> \u306f\u66f8\u3044\u3066\u3082\u66f8\u304b\u306a\u304f\u3066\u3082\u610f\u5473\u306e\u5909\u308f\u3089\u306a\u3044\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3001\u7701\u7565\u3057\u3066\u3082\u7d50\u679c\u306f 1 \u884c\u3082\u5909\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u7701\u7565\u5f62\u306e\u5bfe\u5fdc\u8868\u3068\u300c\u3067\u306f\u5b9f\u969b\u3069\u3053\u307e\u3067\u7701\u3044\u3066\u66f8\u304f\u304b\u300d\u306e\u6307\u91dd\u3001\u305d\u3057\u3066 JOIN \u306e\u7701\u7565\u3068\u3088\u304f\u6df7\u540c\u3055\u308c\u308b\u300c\u30ab\u30f3\u30de\u7d50\u5408(<code>FROM a, b<\/code>)\u300d\u304c\u306a\u305c\u5225\u7269\u306a\u306e\u304b\u3092\u3001\u5b9f\u969b\u306b\u52d5\u304b\u3057\u305f\u7d50\u679c\u3064\u304d\u3067\u6574\u7406\u3057\u307e\u3059\u3002\u52d5\u4f5c\u78ba\u8a8d\u306f 2026\u5e747\u6708\u306b PostgreSQL 17.10 \/ MySQL 8.4.10 \/ SQLite 3.51.0 \u3068 Oracle Database Free(23ai\u7cfb, 23.26.2.0.0)\u3067\u884c\u3044\u307e\u3057\u305f\u3002JOIN \u305d\u306e\u3082\u306e\u306e\u7a2e\u985e\u3068\u7d50\u679c\u306e\u9055\u3044\u306f <a href=\"\/memo\/archives\/2007-11-14-1.html\">SQL \u306e JOIN \u306e\u7a2e\u985e\u3068\u9055\u3044\u307e\u3068\u3081 \u2014 INNER\/LEFT\/RIGHT\/FULL\/CROSS\u30102026\u5e74\u66f4\u65b0\u3011<\/a> \u306b\u307e\u3068\u3081\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u3061\u3089\u3082\u3069\u3046\u305e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7701\u7565\u5f62\u306e\u5bfe\u5fdc\u8868<\/h3>\n\n\n\n<!--more-->\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7701\u7565\u3057\u305f\u66f8\u304d\u65b9<\/th><th>\u6b63\u5f0f\u306a(\u9577\u3044)\u66f8\u304d\u65b9<\/th><th>\u610f\u5473<\/th><\/tr><\/thead><tbody><tr><td><code>JOIN<\/code><\/td><td><code>INNER JOIN<\/code><\/td><td>\u5185\u90e8\u7d50\u5408<\/td><\/tr><tr><td><code>LEFT JOIN<\/code><\/td><td><code>LEFT OUTER JOIN<\/code><\/td><td>\u5de6\u5916\u90e8\u7d50\u5408<\/td><\/tr><tr><td><code>RIGHT JOIN<\/code><\/td><td><code>RIGHT OUTER JOIN<\/code><\/td><td>\u53f3\u5916\u90e8\u7d50\u5408<\/td><\/tr><tr><td><code>FULL JOIN<\/code><\/td><td><code>FULL OUTER JOIN<\/code><\/td><td>\u5b8c\u5168\u5916\u90e8\u7d50\u5408(\u5bfe\u5fdc DB \u306e\u307f\u3002MySQL \u306f\u975e\u5bfe\u5fdc)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u898f\u5247\u306f\u5358\u7d14\u3067\u3001<code>INNER<\/code> \u3068 <code>OUTER<\/code> \u3060\u3051\u304c\u7701\u7565\u53ef\u80fd\u3067\u3059\u3002PostgreSQL \u306e\u516c\u5f0f\u30de\u30cb\u30e5\u30a2\u30eb\u306b\u3082\u300cINNER \u3068 OUTER \u306f\u3059\u3079\u3066\u306e\u5f62\u3067\u7701\u7565\u53ef\u80fd\u3002INNER \u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u3001LEFT\u30fbRIGHT\u30fbFULL \u306f\u5916\u90e8\u7d50\u5408\u3092\u610f\u5473\u3059\u308b\u300d\u3068\u660e\u8a18\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u9006\u306b <code>LEFT<\/code>\u30fb<code>RIGHT<\/code>\u30fb<code>FULL<\/code> \u306f\u7d50\u5408\u306e\u5411\u304d\u3092\u6c7a\u3081\u308b\u672c\u4f53\u306a\u306e\u3067\u7701\u7565\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f SQL \u6a19\u6e96\u306e\u8a71\u306a\u306e\u3067\u7279\u5b9a\u306e DB \u306e\u65b9\u8a00\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u624b\u5143\u3067\u3082 PostgreSQL 17 \/ MySQL 8.4 \/ SQLite 3.51 \u306e 3 \u3064\u3067\u3001\u8868\u306e\u3069\u306e\u7d44\u3082\u7701\u7565\u306e\u6709\u7121\u306b\u3088\u308b\u7d50\u679c\u306e\u9055\u3044\u304c\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f(FULL JOIN \u306e\u884c\u306e\u307f\u3001FULL \u7d50\u5408\u306b\u5bfe\u5fdc\u3057\u306a\u3044 MySQL \u3092\u9664\u304f 2 \u3064\u3067\u306e\u78ba\u8a8d\u3067\u3059\u3002\u307e\u305f Oracle Database Free \u3067\u3082 <code>JOIN<\/code> = <code>INNER JOIN<\/code> \u306e\u7701\u7565\u3067\u540c\u3058\u7d50\u679c\u306b\u306a\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9f\u969b\u306b\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u8a66\u3057\u307e\u3059(\u30b3\u30d4\u30da\u3067\u52d5\u304d\u307e\u3059)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">CREATE TABLE emp (id INT, name VARCHAR(20), dept_id INT);\nCREATE TABLE dept (dept_id INT, dept_name VARCHAR(20));\nINSERT INTO emp VALUES (1,'\u4f50\u85e4',10),(2,'\u9234\u6728',20),(3,'\u9ad8\u6a4b',NULL),(4,'\u7530\u4e2d',40);\nINSERT INTO dept VALUES (10,'\u55b6\u696d\u90e8'),(20,'\u958b\u767a\u90e8'),(30,'\u7dcf\u52d9\u90e8');\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>JOIN<\/code> \u3068 <code>INNER JOIN<\/code> \u3092\u4e26\u3079\u3066\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT * FROM emp JOIN dept USING(dept_id);\nSELECT * FROM emp INNER JOIN dept USING(dept_id);\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u3061\u3089\u3082\u7d50\u679c\u306f\u540c\u3058 2 \u884c\u3067\u3059(PostgreSQL 17 \u3067\u5b9f\u884c\u3002<code>USING<\/code> \u3092\u4f7f\u3063\u305f\u306e\u3067\u7d50\u5408\u5217 dept_id \u306f\u5148\u982d\u306b 1 \u56de\u3060\u3051\u73fe\u308c\u307e\u3059)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>dept_id<\/th><th>id<\/th><th>name<\/th><th>dept_name<\/th><\/tr><\/thead><tbody><tr><td>10<\/td><td>1<\/td><td>\u4f50\u85e4<\/td><td>\u55b6\u696d\u90e8<\/td><\/tr><tr><td>20<\/td><td>2<\/td><td>\u9234\u6728<\/td><td>\u958b\u767a\u90e8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><code>LEFT JOIN<\/code> \u3068 <code>LEFT OUTER JOIN<\/code> \u3082\u540c\u69d8\u306b\u3001\u3069\u3061\u3089\u3082\u540c\u3058 4 \u884c(dept \u5074\u306b\u76f8\u624b\u304c\u3044\u306a\u3044\u9ad8\u6a4b\u30fb\u7530\u4e2d\u306f dept_name \u304c NULL)\u306b\u306a\u308a\u307e\u3059\u3002INNER \u3068 LEFT \u3067\u7d50\u679c\u304c\u3069\u3046\u5909\u308f\u308b\u304b\u3092\u8a73\u3057\u304f\u898b\u305f\u3044\u65b9\u306f <a href=\"\/memo\/archives\/inner-join-left-join.html\">INNER JOIN \u3068 LEFT JOIN \u306e\u9055\u3044 \u2014 \u7d50\u679c\u304c\u3069\u3046\u5909\u308f\u308b\u304b\u5b9f\u4f8b\u3067\u78ba\u8a8d<\/a> \u3092\u3069\u3046\u305e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3067\u306f\u7701\u7565\u3057\u3066\u66f8\u304f\u3079\u304d\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u679c\u304c\u540c\u3058\u306a\u306e\u3067\u3001\u3042\u3068\u306f\u8aad\u307f\u3084\u3059\u3055\u3068\u30c1\u30fc\u30e0\u306e\u6d41\u5100\u306e\u554f\u984c\u3067\u3059\u3002\u3088\u304f\u898b\u304b\u3051\u308b\u7d44\u307f\u5408\u308f\u305b\u306f\u300c\u5185\u90e8\u7d50\u5408\u306f <code>JOIN<\/code> \u3060\u3051\u3001\u5916\u90e8\u7d50\u5408\u306f <code>LEFT JOIN<\/code>(OUTER \u306f\u7701\u7565)\u300d\u3067\u3001\u79c1\u3082\u3053\u306e\u66f8\u304d\u65b9\u3067\u3059\u3002<code>INNER<\/code> \u3092\u7701\u3044\u3066\u3082 <code>JOIN<\/code> \u304c\u5185\u90e8\u7d50\u5408\u306a\u306e\u306f\u8aad\u307f\u624b\u306b\u4f1d\u308f\u308a\u307e\u3059\u3057\u3001\u5916\u90e8\u7d50\u5408\u306f <code>LEFT<\/code> \u306e\u6587\u5b57\u3055\u3048\u3042\u308c\u3070\u5341\u5206\u533a\u5225\u3067\u304d\u308b\u306e\u3067\u3001<code>OUTER<\/code> \u307e\u3067\u66f8\u304f\u3068\u5c11\u3057\u5197\u9577\u306b\u611f\u3058\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3067\u300c<code>INNER<\/code> \u306f\u660e\u793a\u3059\u308b\u300d\u6d3e\u3082\u3044\u3066\u3001\u3053\u3061\u3089\u306f JOIN \u304c\u4e26\u3076\u9577\u3044\u30af\u30a8\u30ea\u3067\u5185\u90e8\u7d50\u5408\u3068\u5916\u90e8\u7d50\u5408\u306e\u533a\u5225\u3092\u76ee\u7acb\u305f\u305b\u305f\u3044\u3068\u304d\u306b\u306f\u5408\u7406\u7684\u3067\u3059\u3002\u3069\u3061\u3089\u304c\u6b63\u3057\u3044\u3068\u3044\u3046\u8a71\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u304c\u3042\u308b\u306a\u3089\u305d\u306e\u6d41\u5100\u306b\u5408\u308f\u305b\u308b\u306e\u304c\u4e00\u756a\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ab\u30f3\u30de\u7d50\u5408(FROM a, b)\u306f\u300cJOIN \u306e\u7701\u7565\u5f62\u300d\u3067\u306f\u306a\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cJOIN \u306e\u7701\u7565\u300d\u3067\u691c\u7d22\u3059\u308b\u3068\u3001\u3053\u3046\u3044\u3046\u66f8\u304d\u65b9\u306e\u8a71\u304c\u6df7\u3056\u3063\u3066\u51fa\u3066\u304f\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT * FROM emp, dept WHERE emp.dept_id = dept.dept_id;\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">FROM \u306b\u30c6\u30fc\u30d6\u30eb\u3092\u30ab\u30f3\u30de\u3067\u4e26\u3079\u3001\u7d50\u5408\u6761\u4ef6\u3092 WHERE \u306b\u66f8\u304f\u30b9\u30bf\u30a4\u30eb\u3067\u3059\u3002\u7d50\u679c\u306f\u5148\u307b\u3069\u306e INNER JOIN \u3068\u540c\u3058 2 \u884c\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u3053\u308c\u306f JOIN \u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u7701\u7565\u5f62\u3067\u306f\u306a\u304f\u3001JOIN \u69cb\u6587\u304c\u6a19\u6e96\u5316\u3055\u308c\u308b\u524d\u304b\u3089\u3042\u308b\u65e7\u30b9\u30bf\u30a4\u30eb\u306e\u7d50\u5408\u3067\u3059\u3002\u4eca\u304b\u3089\u65b0\u3057\u304f\u66f8\u304f\u30af\u30a8\u30ea\u3067\u306f JOIN \u69cb\u6587\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002\u7406\u7531\u306f 2 \u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">JOIN \u3068\u6df7\u5728\u3055\u305b\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ab\u30f3\u30de\u7d50\u5408\u3068 JOIN \u53e5\u306f\u7d50\u5408\u306e\u512a\u5148\u9806\u4f4d\u304c\u9055\u3044\u307e\u3059\u3002JOIN \u53e5\u306e\u307b\u3046\u304c\u5148\u306b\u7d50\u5408\u3055\u308c\u308b\u305f\u3081\u3001\u6df7\u305c\u3066\u66f8\u304f\u3068 ON \u304b\u3089\u30ab\u30f3\u30de\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u898b\u3048\u305a\u3001\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u969b\u306b\u8a66\u3059\u3068\u3053\u3046\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT * FROM emp, dept JOIN emp e2 ON emp.dept_id = e2.dept_id;\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PostgreSQL 17: <code>ERROR: invalid reference to FROM-clause entry for table \"emp\"<\/code><\/li>\n\n\n\n<li>MySQL 8.4: <code>ERROR 1054 (42S22): Unknown column 'emp.dept_id' in 'on clause'<\/code><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><code>dept JOIN emp e2<\/code> \u304c\u5148\u306b\u8a55\u4fa1\u3055\u308c\u308b\u306e\u3067\u3001ON \u306e\u4e2d\u304b\u3089 <code>emp.dept_id<\/code> \u3092\u53c2\u7167\u3067\u304d\u306a\u3044\u3001\u3068\u3044\u3046\u7406\u5c48\u3067\u3059\u3002MySQL \u306e\u30de\u30cb\u30e5\u30a2\u30eb\u306b\u3082\u3053\u306e\u6319\u52d5\u3068\u300c\u30ab\u30f3\u30de\u6f14\u7b97\u5b50\u3092\u907f\u3051\u3066 JOIN \u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u56de\u907f\u7b56\u304c\u660e\u8a18\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u65e2\u5b58\u306e\u30ab\u30f3\u30de\u7d50\u5408\u30af\u30a8\u30ea\u306b JOIN \u3067 1 \u30c6\u30fc\u30d6\u30eb\u8db3\u305d\u3046\u3068\u3057\u3066\u8e0f\u3080\u3001\u5730\u5473\u306b\u56f0\u308b\u7f60\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SELECT * \u3067\u7d50\u5408\u5217\u304c\u91cd\u8907\u3059\u308b<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3046\u3072\u3068\u3064\u7d30\u304b\u3044\u9055\u3044\u3068\u3057\u3066\u3001\u30ab\u30f3\u30de\u7d50\u5408(\u3068 <code>ON<\/code> \u3092\u4f7f\u3063\u305f JOIN)\u3067\u306f <code>SELECT *<\/code> \u306e\u7d50\u679c\u306b\u4e21\u30c6\u30fc\u30d6\u30eb\u306e dept_id \u304c <strong>2 \u56de<\/strong>\u73fe\u308c\u307e\u3059\u3002\u5148\u307b\u3069\u306e <code>USING(dept_id)<\/code> \u3067\u306f\u7d50\u5408\u5217\u304c 1 \u3064\u306b\u307e\u3068\u3081\u3089\u308c\u3066 1 \u56de\u3057\u304b\u51fa\u3066\u3053\u306a\u304b\u3063\u305f\u306e\u3068\u5bfe\u7167\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>id<\/th><th>name<\/th><th>dept_id<\/th><th>dept_id<\/th><th>dept_name<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>\u4f50\u85e4<\/td><td>10<\/td><td>10<\/td><td>\u55b6\u696d\u90e8<\/td><\/tr><tr><td>2<\/td><td>\u9234\u6728<\/td><td>20<\/td><td>20<\/td><td>\u958b\u767a\u90e8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u679c\u3092\u305d\u306e\u307e\u307e\u30a2\u30d7\u30ea\u3084\u30c4\u30fc\u30eb\u306b\u6e21\u3059\u5834\u5408\u3001\u540c\u540d\u5217\u304c 2 \u672c\u3042\u308b\u3068\u5217\u306e\u53d6\u308a\u9055\u3048\u3084\u300c\u91cd\u8907\u3059\u308b\u5217\u540d\u300d\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002JOIN \u69cb\u6587\u306a\u3089 <code>USING<\/code> \u3067\u3053\u306e\u91cd\u8907\u3092\u907f\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Oracle \u306e\u65e7\u8a18\u6cd5\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Oracle \u306b\u306f\u3001\u30ab\u30f3\u30de\u7d50\u5408\u306e WHERE \u306b <code>(+)<\/code> \u3092\u4ed8\u3051\u3066\u5916\u90e8\u7d50\u5408\u3092\u8868\u3059\u72ec\u81ea\u306e\u65e7\u8a18\u6cd5\u304c\u3042\u308a\u307e\u3059(<code>WHERE emp.dept_id = dept.dept_id(+)<\/code> \u306e\u3088\u3046\u306a\u66f8\u304d\u65b9)\u3002\u3053\u308c\u3082\u300cJOIN \u306e\u7701\u7565\u5f62\u300d\u3067\u306f\u306a\u304f Oracle \u56fa\u6709\u306e\u53e4\u3044\u69cb\u6587\u3067\u3001\u4e21\u5074\u306b <code>(+)<\/code> \u3092\u4ed8\u3051\u3089\u308c\u306a\u3044(ORA-01468)\u306a\u3069\u306e\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u3002ANSI \u69cb\u6587\u3078\u306e\u66f8\u304d\u63db\u3048\u5bfe\u5fdc\u8868\u3092 <a href=\"\/memo\/archives\/oracle-join-syntax.html\">Oracle \u306e JOIN \u306e\u66f8\u304d\u65b9 \u2014 \u65e7\u8a18\u6cd5 (+) \u3068 ANSI \u69cb\u6587\u306e\u5bfe\u5fdc\u8868<\/a> \u306b\u307e\u3068\u3081\u305f\u306e\u3067\u3001Oracle \u306e\u65b9\u306f\u305d\u3061\u3089\u3092\u3069\u3046\u305e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3055\u3044\u3054\u306b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>JOIN<\/code> = <code>INNER JOIN<\/code>\u3001<code>LEFT JOIN<\/code> = <code>LEFT OUTER JOIN<\/code> \u3067\u3001INNER\u30fbOUTER \u306e\u7701\u7565\u306f\u7d50\u679c\u306b\u4e00\u5207\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002\u7701\u7565\u3059\u308b\u304b\u306f\u597d\u307f\u3068\u30c1\u30fc\u30e0\u306e\u6d41\u5100\u306e\u554f\u984c\u3067\u3059\u3002\u4e00\u65b9\u3001\u30ab\u30f3\u30de\u7d50\u5408(<code>FROM a, b<\/code>)\u306f\u7701\u7565\u5f62\u3067\u306f\u306a\u304f\u65e7\u30b9\u30bf\u30a4\u30eb\u3067\u3001JOIN \u3068\u306e\u6df7\u5728\u30a8\u30e9\u30fc\u3084 <code>SELECT *<\/code> \u306e\u5217\u91cd\u8907\u3068\u3044\u3046\u5b9f\u5bb3\u304c\u3042\u308b\u306e\u3067\u3001\u65b0\u898f\u306e\u30af\u30a8\u30ea\u306f JOIN \u69cb\u6587\u3067\u66f8\u304f\u306e\u304c\u7121\u96e3\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"\/memo\/archives\/2007-11-14-1.html\">SQL \u306e JOIN \u306e\u7a2e\u985e\u3068\u9055\u3044\u307e\u3068\u3081 \u2014 INNER\/LEFT\/RIGHT\/FULL\/CROSS\u30102026\u5e74\u66f4\u65b0\u3011<\/a><\/li>\n\n\n\n<li><a href=\"\/memo\/archives\/inner-join-left-join.html\">INNER JOIN \u3068 LEFT JOIN \u306e\u9055\u3044 \u2014 \u7d50\u679c\u304c\u3069\u3046\u5909\u308f\u308b\u304b\u5b9f\u4f8b\u3067\u78ba\u8a8d<\/a><\/li>\n\n\n\n<li><a href=\"\/memo\/archives\/oracle-join-syntax.html\">Oracle \u306e JOIN \u306e\u66f8\u304d\u65b9 \u2014 \u65e7\u8a18\u6cd5 (+) \u3068 ANSI \u69cb\u6587\u306e\u5bfe\u5fdc\u8868<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u300cJOIN \u3068\u3060\u3051\u66f8\u3044\u305f\u3089 INNER JOIN \u306b\u306a\u308b\u306e\u304b\u300d\u300cLEFT JOIN \u3068 LEFT OUTER JOIN \u306f\u9055\u3046\u306e\u304b\u300d\u3068\u3044\u3046\u7591\u554f\u3078\u306e\u7b54\u3048\u3092\u5148\u306b\u66f8\u304f\u3068\u3001\u3069\u3061\u3089\u3082\u307e\u3063\u305f\u304f\u540c\u3058\u3082\u306e\u3067\u3059\u3002INNER \u3068 OUTER &hellip; <a href=\"https:\/\/www.ecoop.net\/memo\/archives\/sql-join-shorthand.html\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">SQL \u306e JOIN \u306f\u7701\u7565\u3067\u304d\u308b \u2014 INNER\/OUTER \u30ad\u30fc\u30ef\u30fc\u30c9\u3068\u30ab\u30f3\u30de\u7d50\u5408\u306e\u6574\u7406<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89,135],"tags":[],"class_list":["post-1418","post","type-post","status-publish","format-standard","hentry","category-web-dev","category-server"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/1418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/comments?post=1418"}],"version-history":[{"count":1,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/1418\/revisions"}],"predecessor-version":[{"id":1419,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/1418\/revisions\/1419"}],"wp:attachment":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/media?parent=1418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/categories?post=1418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/tags?post=1418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}