{"id":143739,"date":"2024-11-01T00:49:28","date_gmt":"2024-10-31T16:49:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143739\/"},"modified":"2024-11-01T00:49:29","modified_gmt":"2024-10-31T16:49:29","slug":"sql-%e6%8f%92%e5%85%a5%e6%99%82%e5%90%8c%e6%99%82%e6%9b%b4%e6%96%b0%e5%92%8c%e8%bf%94%e5%9b%9e%e6%9c%80%e6%96%b0-id-%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143739\/","title":{"rendered":"SQL \u63d2\u5165\u6642\u540c\u6642\u66f4\u65b0\u548c\u8fd4\u56de\u6700\u65b0 ID \u7684\u65b9\u6cd5"},"content":{"rendered":"

SQL \u63d2\u5165\u6642\u540c\u6642\u66f4\u65b0\u548c\u8fd4\u56de\u6700\u65b0 ID \u7684\u65b9\u6cd5<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u8a9e\u8a00\uff0c\u4e3b\u8981\u7528\u65bc\u8cc7\u6599\u7684\u67e5\u8a62\u548c\u64cd\u4f5c\u3002\u7576\u6211\u5011\u9700\u8981\u5728\u8cc7\u6599\u5eab\u4e2d\u63d2\u5165\u65b0\u8cc7\u6599\u6642\uff0c\u7d93\u5e38\u6703\u9047\u5230\u9700\u8981\u540c\u6642\u66f4\u65b0\u5176\u4ed6\u8cc7\u6599\u6216\u8fd4\u56de\u6700\u65b0\u63d2\u5165\u7684 ID \u7684\u60c5\u6cc1\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL \u4e2d\u5be6\u73fe\u9019\u4e00\u9700\u6c42\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n

\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5728 SQL \u4e2d\uff0c\u63d2\u5165\u8cc7\u6599\u7684\u57fa\u672c\u8a9e\u6cd5\u70ba\uff1a<\/p>\n

INSERT INTO \u8868\u540d (\u6b04\u4f4d1, \u6b04\u4f4d2, ...) VALUES (\u503c1, \u503c2, ...);<\/code><\/pre>\n
\u7136\u800c\uff0c\u7576\u6211\u5011\u9700\u8981\u5728\u63d2\u5165\u8cc7\u6599\u7684\u540c\u6642\u66f4\u65b0\u5176\u4ed6\u8cc7\u6599\u6216\u7372\u53d6\u6700\u65b0\u7684 ID \u6642\uff0c\u55ae\u7d14\u7684 INSERT \u8a9e\u53e5\u7121\u6cd5\u6eff\u8db3\u9700\u6c42\u3002\u9019\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u7279\u5b9a\u7684 SQL \u8a9e\u6cd5\u4f86\u9054\u6210\u3002<\/p>\n
\u4f7f\u7528 MySQL \u7684 LAST_INSERT_ID() \u51fd\u6578<\/h2>\n
\u5728 MySQL \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 LAST_INSERT_ID()<\/code> \u51fd\u6578\u4f86\u7372\u53d6\u6700\u8fd1\u63d2\u5165\u7684\u81ea\u589e ID\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff1a<\/p>\n
INSERT INTO users (name, email) VALUES ('John Doe', 'john@example.com');\nSET @last_id = LAST_INSERT_ID();\nUPDATE settings SET last_user_id = @last_id;<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u63d2\u5165\u4e00\u689d\u65b0\u7528\u6236\u8cc7\u6599\uff0c\u7136\u5f8c\u4f7f\u7528 LAST_INSERT_ID()<\/code> \u7372\u53d6\u8a72\u7528\u6236\u7684 ID\uff0c\u6700\u5f8c\u66f4\u65b0\u8a2d\u5b9a\u8868\u4e2d\u7684 last_user_id<\/code> \u6b04\u4f4d\u3002<\/p>\n
\u4f7f\u7528 PostgreSQL \u7684 RETURNING \u5b50\u53e5<\/h2>\n
\u5728 PostgreSQL \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 RETURNING<\/code> \u5b50\u53e5\u4f86\u540c\u6642\u7372\u53d6\u63d2\u5165\u7684\u8cc7\u6599\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff1a<\/p>\n
INSERT INTO users (name, email) VALUES ('Jane Doe', 'jane@example.com') RETURNING id INTO last_id;\nUPDATE settings SET last_user_id = last_id;<\/code><\/pre>\n
\u9019\u88e1\uff0c\u6211\u5011\u5728\u63d2\u5165\u8cc7\u6599\u7684\u540c\u6642\uff0c\u4f7f\u7528 RETURNING<\/code> \u5b50\u53e5\u5c07\u65b0\u63d2\u5165\u7684 ID \u5b58\u5165\u8b8a\u6578 last_id<\/code>\uff0c\u7136\u5f8c\u518d\u9032\u884c\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n
\u4f7f\u7528 SQL Server \u7684 OUTPUT \u5b50\u53e5<\/h2>\n
\u5728 SQL Server \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 OUTPUT<\/code> \u5b50\u53e5\u4f86\u9054\u6210\u985e\u4f3c\u7684\u6548\u679c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff1a<\/p>\n
DECLARE @last_id INT;\nINSERT INTO users (name, email) OUTPUT INSERTED.id INTO @last_id VALUES ('Alice', 'alice@example.com');\nUPDATE settings SET last_user_id = @last_id;<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 OUTPUT<\/code> \u5c07\u65b0\u63d2\u5165\u7684 ID \u5b58\u5165\u8b8a\u6578 @last_id<\/code>\uff0c\u7136\u5f8c\u66f4\u65b0\u8a2d\u5b9a\u8868\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728 SQL \u4e2d\uff0c\u63d2\u5165\u8cc7\u6599\u6642\u540c\u6642\u66f4\u65b0\u548c\u8fd4\u56de\u6700\u65b0 ID \u7684\u65b9\u6cd5\u56e0\u8cc7\u6599\u5eab\u7cfb\u7d71\u800c\u7570\u3002MySQL \u4f7f\u7528 LAST_INSERT_ID()<\/code> \u51fd\u6578\uff0cPostgreSQL \u5247\u4f7f\u7528 RETURNING<\/code> \u5b50\u53e5\uff0c\u800c SQL Server \u5247\u4f7f\u7528 OUTPUT<\/code> \u5b50\u53e5\u3002\u9019\u4e9b\u65b9\u6cd5\u80fd\u5920\u6709\u6548\u5730\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9032\u884c\u8cc7\u6599\u5eab\u64cd\u4f5c\u6642\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u8cc7\u6599\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 \u4f3a\u670d\u5668<\/a> \u5c0d\u65bc\u696d\u52d9\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728 SQL \u63d2\u5165\u6642\u540c\u6642\u66f4\u65b0\u6578\u64da\u4e26\u8fd4\u56de\u6700\u65b0 ID \u7684\u6709\u6548\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-143739","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=143739"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143739\/revisions"}],"predecessor-version":[{"id":143740,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143739\/revisions\/143740"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}