{"id":193367,"date":"2024-11-12T21:35:23","date_gmt":"2024-11-12T13:35:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/193367\/"},"modified":"2024-11-12T21:35:25","modified_gmt":"2024-11-12T13:35:25","slug":"%e5%ad%b8sql%e5%bf%85%e9%a0%88%e4%ba%86%e8%a7%a3%e7%9a%84%e5%8d%81%e5%80%8b%e9%ab%98%e7%b4%9a%e6%a6%82%e5%bf%b5-2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/193367\/","title":{"rendered":"\u5b78SQL\u5fc5\u9808\u4e86\u89e3\u7684\u5341\u500b\u9ad8\u7d1a\u6982\u5ff5"},"content":{"rendered":"<h1 id=\"%e5%ad%b8sql%e5%bf%85%e9%a0%88%e4%ba%86%e8%a7%a3%e7%9a%84%e5%8d%81%e5%80%8b%e9%ab%98%e7%b4%9a%e6%a6%82%e5%bf%b5-VdhgmPIMNS\">\u5b78SQL\u5fc5\u9808\u4e86\u89e3\u7684\u5341\u500b\u9ad8\u7d1a\u6982\u5ff5<\/h1>\n<p>SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u5c0d\u65bc\u5e0c\u671b\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u7ba1\u7406\u7684\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u4f86\u8aaa\uff0c\u638c\u63e1\u4e00\u4e9b\u9ad8\u7d1a\u6982\u5ff5\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5341\u500b\u5b78\u7fd2SQL\u6642\u5fc5\u9808\u4e86\u89e3\u7684\u9ad8\u7d1a\u6982\u5ff5\uff0c\u5e6b\u52a9\u60a8\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u80fd\u529b\u3002<\/p>\n<h2 id=\"1-%e4%ba%8b%e5%8b%99%e7%ae%a1%e7%90%86-VdhgmPIMNS\">1. \u4e8b\u52d9\u7ba1\u7406<\/h2>\n<p>\u4e8b\u52d9\u662f\u6307\u4e00\u7d44\u64cd\u4f5c\u7684\u96c6\u5408\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002SQL\u4e2d\u7684\u4e8b\u52d9\u7ba1\u7406\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u4f7f\u7528 <code>BEGIN TRANSACTION<\/code>\u3001<code>COMMIT<\/code> \u548c <code>ROLLBACK<\/code> \u53ef\u4ee5\u63a7\u5236\u4e8b\u52d9\u7684\u958b\u59cb\u3001\u63d0\u4ea4\u548c\u56de\u6efe\u3002<\/p>\n<h2 id=\"2-%e5%84%b2%e5%ad%98%e9%81%8e%e7%a8%8b-VdhgmPIMNS\">2. \u5132\u5b58\u904e\u7a0b<\/h2>\n<p>\u5132\u5b58\u904e\u7a0b\u662f\u4e00\u7d44\u9810\u7de8\u8b6f\u7684SQL\u8a9e\u53e5\uff0c\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u4e26\u91cd\u8907\u4f7f\u7528\u3002\u9019\u4e0d\u50c5\u63d0\u9ad8\u4e86\u57f7\u884c\u6548\u7387\uff0c\u9084\u80fd\u7c21\u5316\u8907\u96dc\u7684\u64cd\u4f5c\u3002\u4f7f\u7528 <code>CREATE PROCEDURE<\/code> \u53ef\u4ee5\u5275\u5efa\u5132\u5b58\u904e\u7a0b\u3002<\/p>\n<h2 id=\"3-%e8%a7%b8%e7%99%bc%e5%99%a8-VdhgmPIMNS\">3. \u89f8\u767c\u5668<\/h2>\n<p>\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5132\u5b58\u904e\u7a0b\uff0c\u6703\u5728\u7279\u5b9a\u4e8b\u4ef6\uff08\u5982\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\uff09\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u9019\u5c0d\u65bc\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\u548c\u81ea\u52d5\u5316\u4efb\u52d9\u975e\u5e38\u6709\u7528\u3002\u4f7f\u7528 <code>CREATE TRIGGER<\/code> \u53ef\u4ee5\u5275\u5efa\u89f8\u767c\u5668\u3002<\/p>\n<h2 id=\"4-%e8%a6%96%e5%9c%96-VdhgmPIMNS\">4. \u8996\u5716<\/h2>\n<p>\u8996\u5716\u662f\u57fa\u65bc\u4e00\u500b\u6216\u591a\u500b\u8868\u7684\u865b\u64ec\u8868\u3002\u5b83\u5011\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u6578\u64da\u7684\u5b89\u5168\u6027\u3002\u4f7f\u7528 <code>CREATE VIEW<\/code> \u53ef\u4ee5\u5275\u5efa\u8996\u5716\uff0c\u4e26\u901a\u904e\u8996\u5716\u4f86\u67e5\u8a62\u6578\u64da\u3002<\/p>\n<h2 id=\"5-%e7%b4%a2%e5%bc%95-VdhgmPIMNS\">5. \u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u662f\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u7684\u6578\u64da\u7d50\u69cb\u3002\u901a\u904e\u5728\u8868\u7684\u67d0\u4e9b\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4f7f\u7528 <code>CREATE INDEX<\/code> \u53ef\u4ee5\u5275\u5efa\u7d22\u5f15\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7d22\u5f15\u7684\u7dad\u8b77\u6210\u672c\u3002<\/p>\n<h2 id=\"6-%e6%ad%a3%e8%a6%8f%e5%8c%96-VdhgmPIMNS\">6. \u6b63\u898f\u5316<\/h2>\n<p>\u6b63\u898f\u5316\u662f\u8a2d\u8a08\u6578\u64da\u5eab\u7684\u4e00\u7a2e\u65b9\u6cd5\uff0c\u65e8\u5728\u6e1b\u5c11\u6578\u64da\u5197\u9918\u548c\u4f9d\u8cf4\u6027\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u89e3\u70ba\u591a\u500b\u8868\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5e38\u898b\u7684\u6b63\u898f\u5316\u5f62\u5f0f\u5305\u62ec\u7b2c\u4e00\u8303\u5f0f\u3001\u7b2c\u4e8c\u8303\u5f0f\u548c\u7b2c\u4e09\u8303\u5f0f\u3002<\/p>\n<h2 id=\"7-%e8%81%9a%e5%90%88%e5%87%bd%e6%95%b8-VdhgmPIMNS\">7. \u805a\u5408\u51fd\u6578<\/h2>\n<p>\u805a\u5408\u51fd\u6578\u7528\u65bc\u8a08\u7b97\u4e00\u7d44\u503c\u7684\u7e3d\u548c\u3001\u5e73\u5747\u503c\u3001\u6700\u5927\u503c\u6216\u6700\u5c0f\u503c\u7b49\u3002\u5e38\u898b\u7684\u805a\u5408\u51fd\u6578\u5305\u62ec <code>SUM()<\/code>\u3001<code>AVG()<\/code>\u3001<code>MAX()<\/code> \u548c <code>MIN()<\/code>\u3002\u9019\u4e9b\u51fd\u6578\u901a\u5e38\u8207 <code>GROUP BY<\/code> \u5b50\u53e5\u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n<h2 id=\"8-%e7%aa%97%e5%8f%a3%e5%87%bd%e6%95%b8-VdhgmPIMNS\">8. \u7a97\u53e3\u51fd\u6578<\/h2>\n<p>\u7a97\u53e3\u51fd\u6578\u5141\u8a31\u5728\u67e5\u8a62\u7d50\u679c\u4e2d\u9032\u884c\u8a08\u7b97\uff0c\u800c\u4e0d\u9700\u8981\u5c07\u7d50\u679c\u5206\u7d44\u3002\u9019\u4f7f\u5f97\u53ef\u4ee5\u5728\u540c\u4e00\u67e5\u8a62\u4e2d\u7372\u5f97\u66f4\u9748\u6d3b\u7684\u5206\u6790\u7d50\u679c\u3002\u5e38\u898b\u7684\u7a97\u53e3\u51fd\u6578\u5305\u62ec <code>ROW_NUMBER()<\/code>\u3001<code>RANK()<\/code> \u548c <code>DENSE_RANK()<\/code>\u3002<\/p>\n<h2 id=\"9-%e5%ad%90%e6%9f%a5%e8%a9%a2-VdhgmPIMNS\">9. \u5b50\u67e5\u8a62<\/h2>\n<p>\u5b50\u67e5\u8a62\u662f\u5d4c\u5957\u5728\u5176\u4ed6\u67e5\u8a62\u4e2d\u7684\u67e5\u8a62\u3002\u5b83\u53ef\u4ee5\u7528\u65bc\u904e\u6ffe\u7d50\u679c\u6216\u8a08\u7b97\u503c\u3002\u5b50\u67e5\u8a62\u53ef\u4ee5\u662f\u55ae\u884c\u6216\u591a\u884c\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728 <code>SELECT<\/code>\u3001<code>FROM<\/code> \u6216 <code>WHERE<\/code> \u5b50\u53e5\u4e2d\u4f7f\u7528\u3002<\/p>\n<h2 id=\"10-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%89%e5%85%a8%e6%80%a7-VdhgmPIMNS\">10. \u6578\u64da\u5eab\u5b89\u5168\u6027<\/h2>\n<p>\u6578\u64da\u5eab\u5b89\u5168\u6027\u662f\u4fdd\u8b77\u6578\u64da\u4e0d\u88ab\u672a\u7d93\u6388\u6b0a\u8a2a\u554f\u7684\u91cd\u8981\u63aa\u65bd\u3002\u9019\u5305\u62ec\u7528\u6236\u6b0a\u9650\u7ba1\u7406\u3001\u6578\u64da\u52a0\u5bc6\u548c\u5be9\u8a08\u65e5\u8a8c\u7b49\u3002\u4f7f\u7528 <code>GRANT<\/code> \u548c <code>REVOKE<\/code> \u53ef\u4ee5\u7ba1\u7406\u7528\u6236\u7684\u8a2a\u554f\u6b0a\u9650\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VdhgmPIMNS\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1\u9019\u5341\u500b\u9ad8\u7d1aSQL\u6982\u5ff5\u5c07\u6709\u52a9\u65bc\u60a8\u5728\u6578\u64da\u5eab\u7ba1\u7406\u548c\u64cd\u4f5c\u4e2d\u66f4\u52a0\u5f97\u5fc3\u61c9\u624b\u3002\u7121\u8ad6\u60a8\u662f\u958b\u767c\u8005\u9084\u662f\u6578\u64da\u5206\u6790\u5e2b\uff0c\u9019\u4e9b\u77e5\u8b58\u90fd\u5c07\u63d0\u5347\u60a8\u7684\u5c08\u696d\u80fd\u529b\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5b78\u7fd2SQL\u7684\u5341\u500b\u9ad8\u7d1a\u6982\u5ff5\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u6280\u80fd\uff0c\u638c\u63e1\u67e5\u8a62\u512a\u5316\u3001\u7d22\u5f15\u3001\u8996\u5716\u7b49\u95dc\u9375\u6280\u8853\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-193367","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193367","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=193367"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193367\/revisions"}],"predecessor-version":[{"id":193368,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193367\/revisions\/193368"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=193367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=193367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=193367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}