{"id":138099,"date":"2024-10-31T13:09:51","date_gmt":"2024-10-31T05:09:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138099\/"},"modified":"2024-10-31T13:09:52","modified_gmt":"2024-10-31T05:09:52","slug":"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%ae%a1%e7%90%86%e5%b8%b8%e7%94%a8%e7%9a%84sql%e8%88%87t-sql","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138099\/","title":{"rendered":"SQL Server\u6578\u64da\u5eab\u4e2d\u7ba1\u7406\u5e38\u7528\u7684SQL\u8207T-SQL"},"content":{"rendered":"<h1 id=\"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%ae%a1%e7%90%86%e5%b8%b8%e7%94%a8%e7%9a%84sql%e8%88%87t-sql-DnytRQbVZl\">SQL Server\u6578\u64da\u5eab\u4e2d\u7ba1\u7406\u5e38\u7528\u7684SQL\u8207T-SQL<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL Server\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u74b0\u5883\u4e2d\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0cSQL Server\u90fd\u80fd\u6709\u6548\u5730\u7ba1\u7406\u548c\u5b58\u5132\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728SQL Server\u4e2d\u5e38\u7528\u7684SQL\u8a9e\u53e5\u53ca\u5176\u64f4\u5c55\u8a9e\u8a00T-SQL\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u672c\u64cd\u4f5c\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-DnytRQbVZl\">SQL\u8207T-SQL\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u6a19\u6e96\u7684\u6578\u64da\u5eab\u67e5\u8a62\u8a9e\u8a00\uff0c\u7528\u65bc\u57f7\u884c\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u5982\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002T-SQL\uff08Transact-SQL\uff09\u662fMicrosoft\u5c0dSQL\u7684\u64f4\u5c55\uff0c\u589e\u52a0\u4e86\u8a31\u591a\u529f\u80fd\uff0c\u5982\u8b8a\u91cf\u3001\u63a7\u5236\u6d41\u7a0b\u8a9e\u53e5\u548c\u932f\u8aa4\u8655\u7406\u7b49\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-DnytRQbVZl\">\u5e38\u7528\u7684SQL\u8a9e\u53e5<\/h2>\n<h3 id=\"1-select%e8%aa%9e%e5%8f%a5-DnytRQbVZl\">1. SELECT\u8a9e\u53e5<\/h3>\n<p>SELECT\u8a9e\u53e5\u662f\u7528\u65bc\u67e5\u8a62\u6578\u64da\u7684\u57fa\u672c\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM Customers WHERE Country = 'USA';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u5f9eCustomers\u8868\u4e2d\u9078\u64c7\u6240\u6709\u4f86\u81ea\u7f8e\u570b\u7684\u5ba2\u6236\u3002<\/p>\n<h3 id=\"2-insert%e8%aa%9e%e5%8f%a5-DnytRQbVZl\">2. INSERT\u8a9e\u53e5<\/h3>\n<p>INSERT\u8a9e\u53e5\u7528\u65bc\u5411\u6578\u64da\u8868\u4e2d\u63d2\u5165\u65b0\u6578\u64da\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>INSERT INTO Customers (CustomerName, Country) VALUES ('John Doe', 'USA');<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u4e00\u500b\u540d\u70baJohn Doe\u7684\u5ba2\u6236\u63d2\u5165\u5230Customers\u8868\u4e2d\u3002<\/p>\n<h3 id=\"3-update%e8%aa%9e%e5%8f%a5-DnytRQbVZl\">3. UPDATE\u8a9e\u53e5<\/h3>\n<p>UPDATE\u8a9e\u53e5\u7528\u65bc\u66f4\u65b0\u6578\u64da\u8868\u4e2d\u7684\u73fe\u6709\u6578\u64da\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE Customers SET Country = 'Canada' WHERE CustomerName = 'John Doe';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u540d\u70baJohn Doe\u7684\u5ba2\u6236\u7684\u570b\u5bb6\u66f4\u65b0\u70ba\u52a0\u62ff\u5927\u3002<\/p>\n<h3 id=\"4-delete%e8%aa%9e%e5%8f%a5-DnytRQbVZl\">4. DELETE\u8a9e\u53e5<\/h3>\n<p>DELETE\u8a9e\u53e5\u7528\u65bc\u522a\u9664\u6578\u64da\u8868\u4e2d\u7684\u6578\u64da\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM Customers WHERE CustomerName = 'John Doe';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u522a\u9664\u540d\u70baJohn Doe\u7684\u5ba2\u6236\u3002<\/p>\n<h2 id=\"t-sql%e7%9a%84%e9%80%b2%e9%9a%8e%e5%8a%9f%e8%83%bd-DnytRQbVZl\">T-SQL\u7684\u9032\u968e\u529f\u80fd<\/h2>\n<h3 id=\"1-%e8%ae%8a%e9%87%8f-DnytRQbVZl\">1. \u8b8a\u91cf<\/h3>\n<p>T-SQL\u5141\u8a31\u4f7f\u7528\u8b8a\u91cf\u4f86\u5b58\u5132\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE @CustomerName NVARCHAR(50);\nSET @CustomerName = 'John Doe';\nSELECT * FROM Customers WHERE CustomerName = @CustomerName;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u9996\u5148\u8072\u660e\u4e86\u4e00\u500b\u8b8a\u91cf@CustomerName\uff0c\u7136\u5f8c\u4f7f\u7528\u8a72\u8b8a\u91cf\u67e5\u8a62Customers\u8868\u3002<\/p>\n<h3 id=\"2-%e6%8e%a7%e5%88%b6%e6%b5%81%e7%a8%8b%e8%aa%9e%e5%8f%a5-DnytRQbVZl\">2. \u63a7\u5236\u6d41\u7a0b\u8a9e\u53e5<\/h3>\n<p>T-SQL\u652f\u6301\u63a7\u5236\u6d41\u7a0b\u8a9e\u53e5\uff0c\u5982IF&#8230;ELSE\u548cWHILE\u3002\u4ee5\u4e0b\u662f\u4e00\u500bIF\u8a9e\u53e5\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>IF EXISTS (SELECT * FROM Customers WHERE Country = 'USA')\nBEGIN\n    PRINT '\u6709\u4f86\u81ea\u7f8e\u570b\u7684\u5ba2\u6236';\nEND\nELSE\nBEGIN\n    PRINT '\u6c92\u6709\u4f86\u81ea\u7f8e\u570b\u7684\u5ba2\u6236';\nEND;<\/code><\/pre>\n<h3 id=\"3-%e9%8c%af%e8%aa%a4%e8%99%95%e7%90%86-DnytRQbVZl\">3. \u932f\u8aa4\u8655\u7406<\/h3>\n<p>T-SQL\u63d0\u4f9b\u4e86TRY&#8230;CATCH\u7d50\u69cb\u4f86\u8655\u7406\u932f\u8aa4\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>BEGIN TRY\n    -- \u5617\u8a66\u57f7\u884c\u7684\u4ee3\u78bc\n    SELECT 1 \/ 0; -- \u9019\u5c07\u5f15\u767c\u932f\u8aa4\nEND TRY\nBEGIN CATCH\n    PRINT '\u767c\u751f\u932f\u8aa4: ' + ERROR_MESSAGE();\nEND CATCH;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DnytRQbVZl\">\u7e3d\u7d50<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u638c\u63e1\u5e38\u7528\u7684SQL\u8a9e\u53e5\u548cT-SQL\u7684\u9032\u968e\u529f\u80fd\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u9019\u4e9b\u8a9e\u8a00\u4e0d\u50c5\u80fd\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u64cd\u4f5c\u6578\u64da\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5982<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u696d\u52d9\u904b\u71df\u7684\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u6578\u64da\u5eab\u4e2d\u5e38\u7528\u7684SQL\u8207T-SQL\u7ba1\u7406\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u64cd\u4f5c\u6548\u7387\uff0c\u512a\u5316\u67e5\u8a62\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-138099","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138099","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=138099"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138099\/revisions"}],"predecessor-version":[{"id":138100,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138099\/revisions\/138100"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138099"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138099"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}