{"id":139446,"date":"2024-10-31T18:38:16","date_gmt":"2024-10-31T10:38:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139446\/"},"modified":"2024-10-31T18:38:17","modified_gmt":"2024-10-31T10:38:17","slug":"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e5%b8%b8%e7%94%a8sql%e5%92%8ct-sql%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139446\/","title":{"rendered":"SQL Server\u6578\u64da\u5eab\u7ba1\u7406\u5e38\u7528SQL\u548cT-SQL\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e5%b8%b8%e7%94%a8sql%e5%92%8ct-sql%e8%aa%9e%e5%8f%a5-hIOCggwtQr\">SQL Server\u6578\u64da\u5eab\u7ba1\u7406\u5e38\u7528SQL\u548cT-SQL\u8a9e\u53e5<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002SQL Server\u4f5c\u70ba\u5fae\u8edf\u7684\u4e00\u6b3e\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u74b0\u5883\u4e2d\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5e38\u7528\u7684SQL\u548cT-SQL\u8a9e\u53e5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7ba1\u7406\u548c\u64cd\u4f5cSQL Server\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"sql%e8%88%87t-sql%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-hIOCggwtQr\">SQL\u8207T-SQL\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u806f\u6578\u64da\u5eab\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u5b83\u63d0\u4f9b\u4e86\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u7684\u57fa\u672c\u529f\u80fd\u3002\u800cT-SQL\uff08Transact-SQL\uff09\u662fSQL Server\u7684\u64f4\u5c55\u7248\u672c\uff0c\u9664\u4e86\u5305\u542b\u6a19\u6e96SQL\u7684\u529f\u80fd\u5916\uff0c\u9084\u589e\u52a0\u4e86\u63a7\u5236\u6d41\u7a0b\u3001\u932f\u8aa4\u8655\u7406\u548c\u8b8a\u91cf\u7b49\u529f\u80fd\uff0c\u4f7f\u5f97\u6578\u64da\u5eab\u64cd\u4f5c\u66f4\u52a0\u9748\u6d3b\u548c\u5f37\u5927\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84sql%e8%aa%9e%e5%8f%a5-hIOCggwtQr\">\u5e38\u7528\u7684SQL\u8a9e\u53e5<\/h2>\n<h3 id=\"1-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-hIOCggwtQr\">1. \u67e5\u8a62\u6578\u64da<\/h3>\n<p>\u67e5\u8a62\u6578\u64da\u662f\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u6700\u5e38\u898b\u7684\u4efb\u52d9\u4e4b\u4e00\u3002\u4f7f\u7528SELECT\u8a9e\u53e5\u53ef\u4ee5\u5f9e\u6578\u64da\u8868\u4e2d\u6aa2\u7d22\u6578\u64da\u3002<\/p>\n<pre><code>SELECT * FROM Customers WHERE Country = 'USA';<\/code><\/pre>\n<h3 id=\"2-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-hIOCggwtQr\">2. \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u8981\u5411\u6578\u64da\u8868\u4e2d\u6dfb\u52a0\u65b0\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT\u8a9e\u53e5\u3002<\/p>\n<pre><code>INSERT INTO Customers (CustomerName, ContactName, Country) VALUES ('Cardinal', 'Tom B. Erich', 'USA');<\/code><\/pre>\n<h3 id=\"3-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-hIOCggwtQr\">3. \u66f4\u65b0\u6578\u64da<\/h3>\n<p>\u66f4\u65b0\u73fe\u6709\u6578\u64da\u53ef\u4ee5\u4f7f\u7528UPDATE\u8a9e\u53e5\u3002<\/p>\n<pre><code>UPDATE Customers SET ContactName = 'Alfred Schmidt' WHERE CustomerID = 1;<\/code><\/pre>\n<h3 id=\"4-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-hIOCggwtQr\">4. \u522a\u9664\u6578\u64da<\/h3>\n<p>\u8981\u522a\u9664\u6578\u64da\u8868\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528DELETE\u8a9e\u53e5\u3002<\/p>\n<pre><code>DELETE FROM Customers WHERE CustomerName = 'Cardinal';<\/code><\/pre>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84t-sql%e8%aa%9e%e5%8f%a5-hIOCggwtQr\">\u5e38\u7528\u7684T-SQL\u8a9e\u53e5<\/h2>\n<h3 id=\"1-%e6%8e%a7%e5%88%b6%e6%b5%81%e7%a8%8b%e8%aa%9e%e5%8f%a5-hIOCggwtQr\">1. \u63a7\u5236\u6d41\u7a0b\u8a9e\u53e5<\/h3>\n<p>T-SQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u63a7\u5236\u6d41\u7a0b\u7684\u8a9e\u53e5\uff0c\u4f8b\u5982IF&#8230;ELSE\u8a9e\u53e5\u3002<\/p>\n<pre><code>IF EXISTS (SELECT * FROM Customers WHERE Country = 'USA')\nBEGIN\n    PRINT '\u6709\u7f8e\u570b\u5ba2\u6236';\nEND\nELSE\nBEGIN\n    PRINT '\u6c92\u6709\u7f8e\u570b\u5ba2\u6236';\nEND;<\/code><\/pre>\n<h3 id=\"2-%e9%8c%af%e8%aa%a4%e8%99%95%e7%90%86-hIOCggwtQr\">2. \u932f\u8aa4\u8655\u7406<\/h3>\n<p>T-SQL\u9084\u652f\u6301\u932f\u8aa4\u8655\u7406\uff0c\u4f7f\u7528TRY&#8230;CATCH\u8a9e\u53e5\u53ef\u4ee5\u6355\u7372\u4e26\u8655\u7406\u932f\u8aa4\u3002<\/p>\n<pre><code>BEGIN TRY\n    -- \u5617\u8a66\u57f7\u884c\u7684\u4ee3\u78bc\n    INSERT INTO Customers (CustomerName) VALUES ('New Customer');\nEND TRY\nBEGIN CATCH\n    PRINT '\u767c\u751f\u932f\u8aa4: ' + ERROR_MESSAGE();\nEND CATCH;<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e8%ae%8a%e9%87%8f-hIOCggwtQr\">3. \u4f7f\u7528\u8b8a\u91cf<\/h3>\n<p>T-SQL\u5141\u8a31\u4f7f\u7528\u8b8a\u91cf\u4f86\u5b58\u5132\u6578\u64da\uff0c\u9019\u5c0d\u65bc\u8907\u96dc\u7684\u67e5\u8a62\u548c\u8a08\u7b97\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre><code>DECLARE @CustomerCount INT;\nSELECT @CustomerCount = COUNT(*) FROM Customers;\nPRINT '\u5ba2\u6236\u6578\u91cf: ' + CAST(@CustomerCount AS VARCHAR);<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-hIOCggwtQr\">\u7d50\u8ad6<\/h2>\n<p>\u638c\u63e1SQL\u548cT-SQL\u8a9e\u53e5\u5c0d\u65bc\u6709\u6548\u7ba1\u7406SQL Server\u6578\u64da\u5eab\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528\u9019\u4e9b\u8a9e\u53e5\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u4eba\u54e1\u53ef\u4ee5\u9ad8\u6548\u5730\u57f7\u884c\u5404\u7a2e\u6578\u64da\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002\u7121\u8ad6\u662f\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u9084\u662f\u522a\u9664\u6578\u64da\uff0c\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u8a9e\u53e5\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u5eab\u7ba1\u7406\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u5e38\u7528\u7684SQL\u548cT-SQL\u8a9e\u53e5\uff0c\u63d0\u5347\u6578\u64da\u64cd\u4f5c\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\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-139446","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139446","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=139446"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139446\/revisions"}],"predecessor-version":[{"id":139447,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139446\/revisions\/139447"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}