{"id":154373,"date":"2024-11-02T15:16:21","date_gmt":"2024-11-02T07:16:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154373\/"},"modified":"2024-11-02T15:16:22","modified_gmt":"2024-11-02T07:16:22","slug":"%e5%8a%a8%e6%80%81-sql-%e8%aa%9e%e5%8f%a5%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95%e4%bb%8b%e7%b4%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154373\/","title":{"rendered":"\u52a8\u6001 SQL \u8a9e\u53e5\u57fa\u672c\u8a9e\u6cd5\u4ecb\u7d39"},"content":{"rendered":"<h1 id=\"%e5%8b%95%e6%85%8b-sql-%e8%aa%9e%e5%8f%a5%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95%e4%bb%8b%e7%b4%b9-YuvyMuPFen\">\u52d5\u614b SQL \u8a9e\u53e5\u57fa\u672c\u8a9e\u6cd5\u4ecb\u7d39<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u52d5\u614b SQL \u662f\u4e00\u7a2e\u5728\u57f7\u884c\u6642\u751f\u6210\u548c\u57f7\u884c SQL \u8a9e\u53e5\u7684\u6280\u8853\uff0c\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u6839\u64da\u4e0d\u540c\u7684\u689d\u4ef6\u548c\u9700\u6c42\u4f86\u69cb\u5efa\u67e5\u8a62\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u52d5\u614b SQL \u7684\u57fa\u672c\u8a9e\u6cd5\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8b%95%e6%85%8b-sql%ef%bc%9f-YuvyMuPFen\">\u4ec0\u9ebc\u662f\u52d5\u614b SQL\uff1f<\/h2>\n<p>\u52d5\u614b SQL \u662f\u6307\u5728\u7a0b\u5e8f\u904b\u884c\u6642\u751f\u6210\u7684 SQL \u8a9e\u53e5\u3002\u8207\u975c\u614b SQL \u4e0d\u540c\uff0c\u975c\u614b SQL \u5728\u7de8\u8b6f\u6642\u5c31\u5df2\u7d93\u78ba\u5b9a\u4e86\u67e5\u8a62\u7684\u7d50\u69cb\uff0c\u800c\u52d5\u614b SQL \u5141\u8a31\u958b\u767c\u8005\u5728\u57f7\u884c\u6642\u6839\u64da\u7528\u6236\u8f38\u5165\u6216\u5176\u4ed6\u8b8a\u91cf\u4f86\u6539\u8b8a\u67e5\u8a62\u7684\u5167\u5bb9\u3002\u9019\u7a2e\u9748\u6d3b\u6027\u4f7f\u5f97\u52d5\u614b SQL \u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u5728\u8655\u7406\u4e0d\u78ba\u5b9a\u7684\u67e5\u8a62\u689d\u4ef6\u6642\u3002<\/p>\n<h2 id=\"%e5%8b%95%e6%85%8b-sql-%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-YuvyMuPFen\">\u52d5\u614b SQL \u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u52d5\u614b SQL \u7684\u8a9e\u6cd5\u56e0\u6578\u64da\u5eab\u7cfb\u7d71\u800c\u7570\uff0c\u4f46\u5927\u591a\u6578\u4e3b\u6d41\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001SQL Server \u548c Oracle\uff09\u90fd\u652f\u6301\u985e\u4f3c\u7684\u8a9e\u6cd5\u7d50\u69cb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u8a9e\u6cd5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-execute-%e8%aa%9e%e5%8f%a5-YuvyMuPFen\">1. \u4f7f\u7528 EXECUTE \u8a9e\u53e5<\/h3>\n<p>\u5728 SQL Server \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>EXECUTE<\/code> \u8a9e\u53e5\u4f86\u57f7\u884c\u52d5\u614b SQL\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE @sql NVARCHAR(MAX);\nSET @sql = 'SELECT * FROM Employees WHERE Department = ''Sales''';\nEXECUTE sp_executesql @sql;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5b9a\u7fa9\u4e86\u4e00\u500b\u8b8a\u91cf <code>@sql<\/code>\uff0c\u7136\u5f8c\u5c07\u4e00\u500b SQL \u67e5\u8a62\u5b57\u7b26\u4e32\u8ce6\u503c\u7d66\u5b83\uff0c\u6700\u5f8c\u4f7f\u7528 <code>EXECUTE<\/code> \u8a9e\u53e5\u4f86\u57f7\u884c\u9019\u500b\u67e5\u8a62\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%ba%96%e5%82%99%e8%aa%9e%e5%8f%a5-YuvyMuPFen\">2. \u4f7f\u7528\u6e96\u5099\u8a9e\u53e5<\/h3>\n<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>PREPARE<\/code> \u548c <code>EXECUTE<\/code> \u8a9e\u53e5\u4f86\u57f7\u884c\u52d5\u614b SQL\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n<pre><code>SET @sql = 'SELECT * FROM Employees WHERE Department = ?';\nPREPARE stmt FROM @sql;\nSET @dept = 'Sales';\nEXECUTE stmt USING @dept;\nDEALLOCATE PREPARE stmt;<\/code><\/pre>\n<p>\u9019\u88e1\uff0c\u6211\u5011\u4f7f\u7528\u4e86\u4f54\u4f4d\u7b26 <code>?<\/code> \u4f86\u8868\u793a\u67e5\u8a62\u4e2d\u7684\u8b8a\u91cf\uff0c\u7136\u5f8c\u901a\u904e <code>EXECUTE<\/code> \u8a9e\u53e5\u4f86\u57f7\u884c\u6e96\u5099\u597d\u7684\u8a9e\u53e5\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-oracle-%e7%9a%84%e5%8b%95%e6%85%8b-sql-YuvyMuPFen\">3. \u4f7f\u7528 Oracle \u7684\u52d5\u614b SQL<\/h3>\n<p>\u5728 Oracle \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>EXECUTE IMMEDIATE<\/code> \u4f86\u57f7\u884c\u52d5\u614b SQL\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE\n    v_sql VARCHAR2(100);\nBEGIN\n    v_sql := 'SELECT * FROM Employees WHERE Department = ''Sales''';\n    EXECUTE IMMEDIATE v_sql;\nEND;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>EXECUTE IMMEDIATE<\/code> \u4f86\u76f4\u63a5\u57f7\u884c\u4e00\u500b SQL \u8a9e\u53e5\u3002<\/p>\n<h2 id=\"%e5%8b%95%e6%85%8b-sql-%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-YuvyMuPFen\">\u52d5\u614b SQL \u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-YuvyMuPFen\">\u512a\u9ede<\/h3>\n<ul>\n<li>\u9748\u6d3b\u6027\uff1a\u53ef\u4ee5\u6839\u64da\u7528\u6236\u8f38\u5165\u6216\u5176\u4ed6\u689d\u4ef6\u52d5\u614b\u751f\u6210\u67e5\u8a62\u3002<\/li>\n<li>\u7c21\u5316\u4ee3\u78bc\uff1a\u6e1b\u5c11\u4e86\u91cd\u8907\u4ee3\u78bc\u7684\u9700\u8981\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u591a\u500b\u67e5\u8a62\u689d\u4ef6\u6642\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-YuvyMuPFen\">\u7f3a\u9ede<\/h3>\n<ul>\n<li>\u5b89\u5168\u6027\uff1a\u5982\u679c\u4e0d\u6b63\u78ba\u8655\u7406\u7528\u6236\u8f38\u5165\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4 SQL \u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li>\u6027\u80fd\uff1a\u52d5\u614b\u751f\u6210\u7684 SQL \u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9ad8\u983b\u7387\u57f7\u884c\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-YuvyMuPFen\">\u7e3d\u7d50<\/h2>\n<p>\u52d5\u614b SQL \u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u6839\u64da\u4e0d\u540c\u7684\u9700\u6c42\u751f\u6210\u548c\u57f7\u884c SQL \u67e5\u8a62\u3002\u96d6\u7136\u5b83\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u4ee3\u78bc\u7c21\u5316\u7684\u512a\u52e2\uff0c\u4f46\u958b\u767c\u8005\u5728\u4f7f\u7528\u6642\u4e5f\u5fc5\u9808\u6ce8\u610f\u5b89\u5168\u6027\u548c\u6027\u80fd\u554f\u984c\u3002\u4e86\u89e3\u52d5\u614b SQL \u7684\u57fa\u672c\u8a9e\u6cd5\u548c\u61c9\u7528\u5834\u666f\uff0c\u5c0d\u65bc\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u548c\u5b89\u5168\u6027\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u52a8\u6001 SQL \u8bed\u53e5\u7684\u57fa\u672c\u8bed\u6cd5\uff0c\u638c\u63e1\u5982\u4f55\u7075\u6d3b\u6784\u5efa\u548c\u6267\u884c SQL \u67e5\u8be2\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\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-154373","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154373","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=154373"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154373\/revisions"}],"predecessor-version":[{"id":154374,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154373\/revisions\/154374"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}