{"id":168339,"date":"2024-11-06T11:33:17","date_gmt":"2024-11-06T03:33:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168339\/"},"modified":"2024-11-06T11:33:18","modified_gmt":"2024-11-06T03:33:18","slug":"sql-%e8%ae%8a%e9%87%8f%e5%be%9e-select-insert-%e7%8d%b2%e5%8f%96%e5%80%bc%e5%85%a9%e7%a8%ae%e6%83%85%e6%b3%81%e7%9a%84%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168339\/","title":{"rendered":"SQL \u8b8a\u91cf\u5f9e select, insert \u7372\u53d6\u503c\u5169\u7a2e\u60c5\u6cc1\u7684\u64cd\u4f5c"},"content":{"rendered":"

SQL \u8b8a\u91cf\u5f9e SELECT \u548c INSERT \u7372\u53d6\u503c\u7684\u64cd\u4f5c<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u67e5\u8a62\u548c\u64cd\u4f5c\u8cc7\u6599\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u7576\u6211\u5011\u9700\u8981\u5f9e\u8cc7\u6599\u5eab\u4e2d\u7372\u53d6\u6216\u63d2\u5165\u8cc7\u6599\u6642\uff0c\u8b8a\u91cf\u7684\u4f7f\u7528\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL \u4e2d\u5f9e SELECT<\/code> \u548c INSERT<\/code> \u8a9e\u53e5\u4e2d\u7372\u53d6\u503c\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u64cd\u4f5c\u793a\u4f8b\u3002<\/p>\n

\u4f7f\u7528 SELECT \u7372\u53d6\u503c<\/h2>\n

\u5728 SQL \u4e2d\uff0cSELECT<\/code> \u8a9e\u53e5\u7528\u65bc\u5f9e\u8cc7\u6599\u8868\u4e2d\u6aa2\u7d22\u8cc7\u6599\u3002\u7576\u6211\u5011\u9700\u8981\u5c07\u67e5\u8a62\u7d50\u679c\u5b58\u5132\u5230\u8b8a\u91cf\u4e2d\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\uff1a<\/p>\n

SET @\u8b8a\u91cf\u540d\u7a31 = (SELECT \u6b04\u4f4d\u540d\u7a31 FROM \u8cc7\u6599\u8868\u540d\u7a31 WHERE \u689d\u4ef6);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba users<\/code> \u7684\u8cc7\u6599\u8868\uff0c\u4e26\u5e0c\u671b\u7372\u53d6\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u4e26\u5c07\u5176\u5b58\u5132\u5230\u8b8a\u91cf\u4e2d\uff1a<\/p>\n
SET @user_email = (SELECT email FROM users WHERE id = 1);<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 SET<\/code> \u8a9e\u53e5\u5c07\u67e5\u8a62\u7d50\u679c\u8ce6\u503c\u7d66\u8b8a\u91cf @user_email<\/code>\u3002\u9019\u6a23\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u5728\u5f8c\u7e8c\u7684 SQL \u64cd\u4f5c\u4e2d\u4f7f\u7528\u9019\u500b\u8b8a\u91cf\u3002<\/p>\n
\u4f7f\u7528 INSERT \u7372\u53d6\u503c<\/h2>\n
\u9664\u4e86\u5f9e SELECT<\/code> \u7372\u53d6\u503c\u5916\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u5728 INSERT<\/code> \u8a9e\u53e5\u4e2d\u4f7f\u7528\u8b8a\u91cf\u3002\u9019\u901a\u5e38\u7528\u65bc\u5c07\u8b8a\u91cf\u7684\u503c\u63d2\u5165\u5230\u8cc7\u6599\u8868\u4e2d\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684 INSERT<\/code> \u8a9e\u6cd5\uff1a<\/p>\n
INSERT INTO \u8cc7\u6599\u8868\u540d\u7a31 (\u6b04\u4f4d1, \u6b04\u4f4d2) VALUES (@\u8b8a\u91cf1, @\u8b8a\u91cf2);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u8981\u5c07\u4e00\u500b\u65b0\u7528\u6236\u7684\u8cc7\u6599\u63d2\u5165\u5230 users<\/code> \u8cc7\u6599\u8868\u4e2d\uff0c\u4e26\u4e14\u6211\u5011\u5df2\u7d93\u6709\u4e86\u7528\u6236\u7684\u540d\u7a31\u548c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u8b8a\u91cf\uff1a<\/p>\n
SET @user_name = 'John Doe';\nSET @user_email = 'john@example.com';\n\nINSERT INTO users (name, email) VALUES (@user_name, @user_email);<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8a2d\u7f6e\u4e86\u5169\u500b\u8b8a\u91cf @user_name<\/code> \u548c @user_email<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528\u9019\u4e9b\u8b8a\u91cf\u7684\u503c\u4f86\u63d2\u5165\u65b0\u7528\u6236\u7684\u8cc7\u6599\u3002<\/p>\n
\u7d50\u5408 SELECT \u548c INSERT \u7684\u64cd\u4f5c<\/h2>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u5c07 SELECT<\/code> \u7684\u7d50\u679c\u76f4\u63a5\u63d2\u5165\u5230\u53e6\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u8a9e\u6cd5\u5be6\u73fe\uff1a<\/p>\n
INSERT INTO \u76ee\u6a19\u8cc7\u6599\u8868 (\u6b04\u4f4d1, \u6b04\u4f4d2)\nSELECT \u6b04\u4f4d1, \u6b04\u4f4d2 FROM \u539f\u59cb\u8cc7\u6599\u8868 WHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba archived_users<\/code> \u7684\u8cc7\u6599\u8868\uff0c\u6211\u5011\u5e0c\u671b\u5c07\u6240\u6709\u5df2\u7d93\u8a3b\u92b7\u7684\u7528\u6236\u5f9e users<\/code> \u8cc7\u6599\u8868\u4e2d\u79fb\u52d5\u5230\u9019\u500b\u8cc7\u6599\u8868\uff1a<\/p>\n
INSERT INTO archived_users (name, email)\nSELECT name, email FROM users WHERE status = 'inactive';<\/code><\/pre>\n
\u9019\u6a23\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u4e00\u6b21\u6027\u5c07\u6240\u6709\u7b26\u5408\u689d\u4ef6\u7684\u8cc7\u6599\u63d2\u5165\u5230\u76ee\u6a19\u8cc7\u6599\u8868\u4e2d\uff0c\u800c\u7121\u9700\u9010\u884c\u63d2\u5165\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728 SQL \u4e2d\uff0c\u8b8a\u91cf\u7684\u4f7f\u7528\u4f7f\u5f97\u8cc7\u6599\u7684\u64cd\u4f5c\u66f4\u52a0\u9748\u6d3b\u548c\u9ad8\u6548\u3002\u7121\u8ad6\u662f\u5f9e SELECT<\/code> \u7372\u53d6\u503c\u9084\u662f\u4f7f\u7528 INSERT<\/code> \u63d2\u5165\u8cc7\u6599\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u900f\u904e\u9019\u4e9b\u6280\u8853\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u8655\u7406\u8cc7\u6599\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5f0f\u7684\u6027\u80fd\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc \u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728 SQL \u4e2d\u4f7f\u7528\u8b8a\u91cf\u5f9e SELECT \u548c INSERT \u64cd\u4f5c\u4e2d\u7372\u53d6\u503c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u548c\u9748\u6d3b\u6027\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-168339","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168339","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=168339"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168339\/revisions"}],"predecessor-version":[{"id":168340,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168339\/revisions\/168340"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}