{"id":436,"date":"2026-02-27T15:17:23","date_gmt":"2026-02-27T07:17:23","guid":{"rendered":"https:\/\/blog.kingster.cn\/?p=436"},"modified":"2026-02-27T15:17:23","modified_gmt":"2026-02-27T07:17:23","slug":"100-sql-server-mistakes-and-how-to-avoid-them-chap2-development-standard","status":"publish","type":"post","link":"https:\/\/blog.kingster.cn\/index.php\/2026\/02\/27\/100-sql-server-mistakes-and-how-to-avoid-them-chap2-development-standard\/","title":{"rendered":"\u8bfb\u4e66\u300a100 SQL Server Mistakes and How to Avoid Them\u300b\u7b2c\u4e8c\u7ae0 \u5f00\u53d1\u6807\u51c6"},"content":{"rendered":"<p><strong>\u7b2c\u4e8c\u7ae0 \u5f00\u53d1\u6807\u51c6<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u672c\u7ae0\u6db5\u76d6<\/strong><\/p>\n<ul>\n<li>\u5f00\u53d1\u6807\u51c6\u7b80\u4ecb<\/li>\n<li>\u547d\u540d\u6807\u51c6<\/li>\n<li>\u7f16\u7801\u6807\u51c6<\/li>\n<li>\u547d\u540d\u89c4\u8303<\/li>\n<li>\u7f16\u7801\u6807\u51c6<\/li>\n<li>\u98ce\u683c\u6807\u51c6<\/li>\n<li>\u6280\u672f\u6807\u51c6<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u4e00\u4e2a\u9519\u8bef\u7684\u670d\u52a1\u5668\u548cDB\u547d\u540d\u4f8b\u5b50<\/p>\n<p><a href=\"https:\/\/blog.kingster.cn\/wp-content\/uploads\/2026\/02\/2026022707134847.png\" rel=\"box\" class=\"fancybox\"><img loading=\"lazy\" decoding=\"async\" width=\"458\" height=\"600\" class=\"alignleft size-full wp-image-437\" src=\"https:\/\/blog.kingster.cn\/wp-content\/uploads\/2026\/02\/2026022707134847.png\" alt=\"\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u4e00\u4e2a\u9519\u8bef\u7684\u5b58\u50a8\u8fc7\u7a0b\u4f8b\u5b50<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>ALTER PROCEDURE dbo.proc01<\/p>\n<p>AS<\/p>\n<p>BEGIN<\/p>\n<p>;with t3 as (select col1, col2, col3 from tbl03) select t1.col1, t2.col2, t1.col2, t1.col3, t3.col1, t3.col2 from dbo.tbl01 t1 inner join tbl02 t2 on t1.col1 = t2.col1 and t1.col3 &lt; 55 inner join t3 on t3.col1 = t1.col1 union select col1, col2, col3, NULL, NULL, &#8216;0&#8217; from dbo.tbl04 ;<\/p>\n<p>END<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p><strong>\u9519\u8bef 1\uff1a \u65e0\u63cf\u8ff0\u6027\u7684\u5bf9\u8c61\u540d\u79f0<\/strong><\/p>\n<p>\u4e00\u4e2a\u547d\u540d\u4e0d\u89c4\u8303\u7684\u4f8b\u5b50<\/p>\n<p><a href=\"https:\/\/blog.kingster.cn\/wp-content\/uploads\/2026\/02\/2026022707135418.png\" rel=\"box\" class=\"fancybox\"><img loading=\"lazy\" decoding=\"async\" width=\"554\" height=\"437\" class=\"alignleft size-full wp-image-438\" src=\"https:\/\/blog.kingster.cn\/wp-content\/uploads\/2026\/02\/2026022707135418.png\" alt=\"\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u4e0d\u660e\u6670\u7684\u53c2\u6570\uff0c\u4e00\u4e2a\u51fd\u6570\u540d\u79f0<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>CREATE PROCEDURE sp_orders<\/p>\n<p>@CustomerID INT,<\/p>\n<p>@LineItems XML,<\/p>\n<p>@AddressID INT,<\/p>\n<p>@Address INT,<\/p>\n<p>@date DATETIME<\/p>\n<p>AS<\/p>\n<p>BEGIN<\/p>\n<p>DECLARE @Stock INT = 0 ;<\/p>\n<p>DECLARE @Product INT = 0 ;<\/p>\n<p>&nbsp;<\/p>\n<p>INSERT INTO tbl_orders (<\/p>\n<p>CustomerID,<\/p>\n<p>LineItems,<\/p>\n<p>BillingAddressID,<\/p>\n<p>DeliveryAddressID,<\/p>\n<p>Date<\/p>\n<p>)<\/p>\n<p>VALUES (<\/p>\n<p>@CustomerID,<\/p>\n<p>@LineItems,<\/p>\n<p>@AddressID,<\/p>\n<p>@Address,<\/p>\n<p>@date<\/p>\n<p>) ;<\/p>\n<p>&nbsp;<\/p>\n<p>SET @Stock = @LineItems.value(&#8216;(\/Product\/@qty)[1]&#8217;, &#8216;int&#8217;) ;<\/p>\n<p>SET @Product = @LineItems.value(&#8216;(\/Product\/@ProductID)[1]&#8217;, &#8216;int&#8217;) ;<\/p>\n<p>&nbsp;<\/p>\n<p>EXEC sp_stockUpdate @product, @stock ;<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u4fee\u6539\u540e\u7684\u51fd\u6570\u4f8b\u5b50\uff1a\u66f4\u65b0\u4e86\u53c2\u6570\u540d\u5b57\uff0c \u4f7f\u66f4\u5177\u610f\u4e49<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>CREATE PROCEDURE sp_stockUpdate<\/p>\n<p>@ProductStockLevel INT,\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>@StockID INT\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>AS<\/p>\n<p>BEGIN<\/p>\n<p>UPDATE tbl_products<\/p>\n<p>SET StockQty = StockQty &#8211; @productStockLevel<\/p>\n<p>WHERE ProductID = @StockID ;<\/p>\n<p>&nbsp;<\/p>\n<p>UPDATE [DCSVR01\\Inventory].InventoryDB.dbo.productStock<\/p>\n<p>SET StockQty = StockQty &#8211; @productStockLevel<\/p>\n<p>WHERE ProductID = @StockID ;<\/p>\n<p>END<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<blockquote><p>ALTER PROCEDURE sp_orders<\/p>\n<p>@CustomerID INT,<\/p>\n<p>@LineItems XML,<\/p>\n<p>@BillingAddressID INT,<\/p>\n<p>@DeliveryAddressID INT,<\/p>\n<p>@OrderDate DATETIME<\/p>\n<p>AS<\/p>\n<p>BEGIN<\/p>\n<p>DECLARE @OrderQty INT = 0 ;<\/p>\n<p>DECLARE @ProductID INT = 0 ;<\/p>\n<p>&nbsp;<\/p>\n<p>INSERT INTO tbl_orders (CustomerID, LineItems, BillingAddressID, DeliveryAddressID, OrderDate)<\/p>\n<p>VALUES (@CustomerID, @LineItems, @BillingAddressID, @DeliveryAddressID,<\/p>\n<p>@OrderDate) ;<\/p>\n<p>&nbsp;<\/p>\n<p>SET @OrderQty = @LineItems.value(&#8216;(\/Product\/@OrderQty)[1]&#8217;, &#8216;int&#8217;) ;<\/p>\n<p>SET @ProductID = @LineItems.value(&#8216;(\/Product\/@ProductID)[1]&#8217;, &#8216;int&#8217;) ;<\/p>\n<p>&nbsp;<\/p>\n<p>EXEC sp_updateProductStockLevel @OrderQty, @ProductID ;<\/p>\n<p>END<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>\u66f4\u65b0\u540e\u7684\u51fd\u6570\u540d\u79f0<\/p>\n<blockquote><p>CREATE PROCEDURE sp_updateProductStockLevel<\/p>\n<p>@OrderQty INT,\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>@ProductID INT\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>AS<\/p>\n<p>BEGIN<\/p>\n<p>UPDATE tbl_products<\/p>\n<p>SET StockQty = StockQty &#8211; @OrderQty<\/p>\n<p>WHERE ProductID = @ProductID ;<\/p>\n<p>UPDATE [DCSVR01\\Inventory].InventoryDB.dbo.productStock<\/p>\n<p>SET StockQty = StockQty &#8211; @OrderQty<\/p>\n<p>WHERE ProductID = @ProductID ;<\/p>\n<p>END<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p><strong>\u9519\u8bef2\uff1a \u4f7f\u7528\u5bf9\u8c61\u524d\u7f00<\/strong><\/p>\n<p>\u6709\u4e9b\u5f00\u53d1\u4eba\u5458\u559c\u6b22\u4f7f\u7528\u5bf9\u8c61\u524d\u7f00\u3002\u5bf9\u8c61\u524d\u7f00\u662f\u6307\u5728\u6240\u6709\u8868\u540d\u5f00\u5934\u52a0\u4e0a tbl_\uff0c\u5728\u5b58\u50a8\u8fc7\u7a0b\u540d\u79f0\u5f00\u5934\u52a0\u4e0a sp_\uff0c\u5728\u51fd\u6570\u540d\u79f0\u5f00\u5934\u52a0\u4e0a fn_\uff0c\u5728\u89c6\u56fe\u540d\u79f0\u5f00\u5934\u52a0\u4e0a v_\u3002\u60f3\u8c61\u4e00\u4e0b\uff0c\u4f60\u6709\u4e00\u4e2a\u5305\u542b 250 \u4e2a\u8868\u7684\u6570\u636e\u5e93\u3002\u4f60\u6b63\u5728\u5bfb\u627e\u67d0\u4e2a\u8868\u7684\u5217\u5b9a\u4e49\uff0c\u56e0\u6b64\u4f60\u5feb\u901f\u6d4f\u89c8\u5bf9\u8c61\u8d44\u6e90\u7ba1\u7406\u5668\u4e2d\u7684\u8868\u5217\u8868\u3002\u7136\u800c\uff0c\u6240\u6709\u8868\u90fd\u6709 tbl_ \u524d\u7f00\u3002\u8fd9\u4f1a\u5728\u6d4f\u89c8\u65f6\u589e\u52a0\u7406\u89e3\u65f6\u95f4\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u9519\u8bef3\uff1a \u4ee4\u4eba\u754f\u60e7\u7684 sp_ \u524d\u7f00<\/strong><\/p>\n<p>\u89e3\u91ca\u4e3a\u4ec0\u4e48 sp_ \u524d\u7f00\u503c\u5f97\u7279\u522b\u5f3a\u8c03\u7684\u6700\u4f73\u65b9\u5f0f\u662f\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\u3002\u56e0\u6b64\uff0c\u6211\u5e0c\u671b\u4f60\u8003\u8651 SalesDB \u4e2d sp_AddUser \u5b58\u50a8\u8fc7\u7a0b\u7684\u5b9a\u4e49\uff0c\u8be5\u5b9a\u4e49\u53ef\u4ee5\u5728\u4e0b\u4e00\u4e2a\u5217\u8868\u4e2d\u627e\u5230\u3002\u8be5\u8fc7\u7a0b\u5728\u7528\u6237\u901a\u8fc7 MagicChoc \u7f51\u7ad9\u5728\u7ebf\u6ce8\u518c\u8d26\u6237\u65f6\uff0c\u7b80\u5355\u5730\u5c06\u65b0\u7528\u6237\u6dfb\u52a0\u5230\u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>CREATE PROCEDURE sp_addUser<\/p>\n<p>@UserDetails XML\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>AS<\/p>\n<p>BEGIN<\/p>\n<p>&nbsp;<\/p>\n<p>OPEN SYMMETRIC KEY MagicChocKey<\/p>\n<p>DECRYPTION BY CERTIFICATE MagicChocCertificate ;<\/p>\n<p>&nbsp;<\/p>\n<p>INSERT INTO dbo.customers (<\/p>\n<p>FirstName<\/p>\n<p>, LastName<\/p>\n<p>, email<\/p>\n<p>, UserPassword<\/p>\n<p>)<\/p>\n<p>VALUES (<\/p>\n<p>@UserDetails.value(&#8216;(\/User\/FirstName)[1]&#8217;,&#8217;nvarchar(128)&#8217;)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>, @UserDetails.value(&#8216;(\/User\/LastName)[1]&#8217;,&#8217;nvarchar(128)&#8217;)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>, @UserDetails.value(&#8216;(\/User\/email)[1]&#8217;,&#8217;nvarchar(512)&#8217;)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>, ENCRYPTBYKEY(KEY_GUID(&#8216;MagicChocKey&#8217;), @UserDetails.value(&#8216;(\/User\/ \u2461<\/p>\n<p>UserPassword)[1]&#8217;,&#8217;nvarchar(128)&#8217;))\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2462<\/p>\n<p>) ;<\/p>\n<p>&nbsp;<\/p>\n<p>CLOSE SYMMETRIC KEY MagicChocKey ;<\/p>\n<p>END<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>DECLARE @UserDetails XML ;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>&nbsp;<\/p>\n<p>SET @UserDetails = N'&lt;User&gt;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>&lt;FirstName&gt;Peter&lt;\/FirstName&gt;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>&lt;LastName&gt;Carter&lt;\/LastName&gt;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>&lt;email&gt;peter@carter.com&lt;\/email&gt;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>&lt;UserPassword&gt;myPaSSw0rd&lt;\/UserPassword&gt;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2461<\/p>\n<p>&lt;\/User&gt;&#8217; ;<\/p>\n<p>&nbsp;<\/p>\n<p>EXEC sp_adduser @UserDetails ;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2462<\/p>\n<p>&nbsp;<\/p><\/blockquote>\n<p>\u6267\u884c\u65f6\uff0c\u4f1a\u62a5\u9519\uff1a<\/p>\n<blockquote><p>Msg 257, Level 16, State 3, Procedure sp_adduser, Line 0 [Batch Start Line 94]<\/p>\n<p>Implicit conversion from data type xml to nvarchar is not allowed. Use the<\/p>\n<p>CONVERT function to run this query.<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>\u55ef\uff0c\u8fd9\u5f88\u5947\u602a\uff01\u9519\u8bef\u663e\u793a\u5728\u5b58\u50a8\u8fc7\u7a0b\u7684\u7b2c 0 \u884c\uff0c\u8fd9\u610f\u5473\u7740\u5728\u4f20\u9012 @UserDetails \u53d8\u91cf\u65f6\u51fa\u73b0\u4e86\u9519\u8bef\u3002\u4f46\u5e76\u6ca1\u6709\u53d1\u751f NVARCHAR \u5230 XML \u7684\u8f6c\u6362\u3002\u8be5\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u662f XML\uff0c\u800c\u5b58\u50a8\u8fc7\u7a0b\u7684\u53c2\u6570\u4e5f\u5b9a\u4e49\u4e3a XML \u6570\u636e\u7c7b\u578b\u3002<\/p>\n<p>\u90a3\u4e48\u5230\u5e95\u53d1\u751f\u4e86\u4ec0\u4e48\u5462\uff1f\u8ba9\u6211\u4eec\u505a\u4e2a\u5b9e\u9a8c\u3002\u6211\u4eec\u5c1d\u8bd5\u5728\u4e0d\u4f20\u5165\u4efb\u4f55\u53c2\u6570\u7684\u60c5\u51b5\u4e0b\u8fd0\u884c\u8be5\u5b58\u50a8\u8fc7\u7a0b\uff0c\u4f7f\u7528\u8bed\u53e5 EXEC sp_adduser\u3002\u9519\u8bef\u8f93\u51fa\u662f<\/p>\n<blockquote><p>Msg 201, Level 16, State 4, Procedure sp_adduser, Line 0 [Batch Start Line<\/p>\n<p>104]<\/p>\n<p>Procedure or function &#8216;sp_adduser&#8217; expects parameter &#8216;@loginame&#8217;, which was<\/p>\n<p>not supplied.<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u9047\u5230\u4e86\u4e00\u4e2a\u4e0d\u540c\u7684\u9519\u8bef\uff0c\u4f46\u8fd9\u66f4\u5947\u602a\u3002\u5b83\u62b1\u6028\u6211\u4eec\u6ca1\u6709\u4f20\u9012 @loginname \u53c2\u6570\u3002\u4f46\u662f\u6211\u4eec\u7684\u5b58\u50a8\u8fc7\u7a0b\u5e76\u6ca1\u6709 @loginname \u53c2\u6570\u3002\u51e0\u4e4e\u5c31\u50cf\u6211\u4eec\u5728\u6267\u884c\u9519\u8bef\u7684\u5b58\u50a8\u8fc7\u7a0b\u4e00\u6837\u3002\u6211\u4eec\u9700\u8981\u5f7b\u5e95\u5f04\u6e05\u695a\u8fd9\u4e2a\u95ee\u9898\u3002\u4e3a\u6b64\uff0c\u8ba9\u6211\u4eec\u8fd0\u884c\u6e05\u5355 \u4e0b\u9762\u7684\u67e5\u8be2\uff0c\u8be5\u67e5\u8be2\u8fd4\u56de\u6765\u81ea sys.all_objects \u76ee\u5f55\u89c6\u56fe\u7684\u7ed3\u679c\u3002\u8fd9\u4e2a\u5bf9\u8c61\u63d0\u4f9b\u4e86\u7528\u6237\u5bf9\u8c61\u548c\u7cfb\u7edf\u5bf9\u8c61\u7684\u5e76\u96c6\u3002<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>SELECT<\/p>\n<p>name<\/p>\n<p>, SCHEMA_NAME(schema_id) AS SchemaName\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2460<\/p>\n<p>, type_desc<\/p>\n<p>, is_ms_shipped<\/p>\n<p>FROM sys.all_objects<\/p>\n<p>WHERE name = &#8216;sp_adduser&#8217; ;<\/p><\/blockquote>\n<p>\u6b64\u67e5\u8be2\u7684\u7ed3\u679c\u662f<\/p>\n<p><strong>name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SchemaName\u00a0\u00a0\u00a0\u00a0 type_desc\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 is_ms_shipped<\/strong><\/p>\n<p>sp_adduser\u00a0\u00a0\u00a0 dbo\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SQL_STORED_PROCEDURE\u00a0\u00a0\u00a0 0<\/p>\n<p>sp_adduser\u00a0\u00a0\u00a0 sys\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SQL_STORED_PROCEDURE\u00a0\u00a0\u00a0 1<\/p>\n<p>&nbsp;<\/p>\n<p>\u7ed3\u679c\u663e\u793a\uff0c\u6709\u4e24\u4e2a\u5177\u6709\u76f8\u540c\u540d\u79f0\u7684\u5b58\u50a8\u8fc7\u7a0b\u3002<\/p>\n<p>\u7b2c\u4e00\u4e2a\u7ed3\u679c\u662f\u6211\u4eec\u7684\u5b58\u50a8\u8fc7\u7a0b\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b83\u4f4d\u4e8e dbo \u67b6\u6784\u4e2d\u4e14 is_ms_shipped \u6807\u5fd7\u4e3a false \u6765\u5224\u65ad\u3002<\/p>\n<p>\u7b2c\u4e8c\u4e2a\u7ed3\u679c\u662f\u540c\u540d\u7684\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b83\u4f4d\u4e8e sys \u67b6\u6784\u4e2d\u4e14 is_ms_shipped \u6807\u5fd7\u4e3a true \u6765\u5224\u65ad\u5b83\u662f\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b\u3002<\/p>\n<p>\u63d0\u793a\uff1ais_ms_shipped \u6807\u5fd7\u8868\u793a\u8be5\u5bf9\u8c61\u662f\u7531 SQL Server \u5185\u90e8\u521b\u5efa\u7684\u3002<\/p>\n<p>\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b\u5b58\u50a8\u5728\u4e00\u4e2a\u540d\u4e3a resource \u7684\u201c\u9690\u85cf\u201d\u53ea\u8bfb\u6570\u636e\u5e93\u4e2d\uff0c\u8be5\u6570\u636e\u5e93\u4fdd\u5b58\u6240\u6709\u7cfb\u7edf\u5bf9\u8c61\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u4f3c\u4e4e\u51fa\u73b0\u5728\u6240\u6709\u6570\u636e\u5e93\u4e2d\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u4ece\u6240\u6709\u6570\u636e\u5e93\u4e2d\u8bbf\u95ee\u3002\u6240\u6709\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b\u90fd\u6709 sp_ \u524d\u7f00\uff0c\u8fd9\u4e2a\u524d\u7f00\u5e94\u4e13\u95e8\u7528\u4e8e\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b\u3002<\/p>\n<p>\u5f53\u4f60\u6267\u884c\u5e26\u6709 sp_ \u524d\u7f00\u7684\u5b58\u50a8\u8fc7\u7a0b\u65f6\uff0cSQL Server \u4f1a\u9996\u5148\u5728 master \u6570\u636e\u5e93\u4e2d\u67e5\u627e\u8be5\u5b58\u50a8\u8fc7\u7a0b\u3002\u53ea\u6709\u5f53\u5728 master \u6570\u636e\u5e93\u4e2d\u672a\u627e\u5230\u65f6\uff0c\u624d\u4f1a\u5c1d\u8bd5\u5728\u6267\u884c\u8be5\u5b58\u50a8\u8fc7\u7a0b\u7684\u672c\u5730\u6570\u636e\u5e93\u4e2d\u67e5\u627e\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u9519\u8bef4\uff1a\u6ca1\u6709\u4e3a\u7f16\u7801\u6807\u51c6\u817e\u51fa\u65f6\u95f4<\/strong><\/p>\n<p>\u60f3\u8c61\u4e00\u4e0b\uff0c\u4f60\u5728\u4e00\u4e2a\u753110\u540d\u5f00\u53d1\u4eba\u5458\u7ec4\u6210\u7684\u56e2\u961f\u4e2d\uff0c\u6b63\u5728\u5f00\u53d1\u4e00\u4e2a\u5927\u578b\u6570\u636e\u5c42\u5e94\u7528\u7a0b\u5e8f\u3002\u4f60\u4eec\u90fd\u662f\u6709\u7ecf\u9a8c\u7684\u5f00\u53d1\u4eba\u5458\uff0c\u800c\u4e14\u6709\u4e00\u4e2a\u7d27\u8feb\u7684\u622a\u6b62\u65e5\u671f\u9700\u8981\u5b8c\u6210\u3002\u76f4\u63a5\u5f00\u59cb\u5199\u4ee3\u7801\u53ef\u80fd\u5f88\u8bf1\u4eba\u3002\u6bd5\u7adf\uff0c\u4f60\u4eec\u90fd\u5df2\u7ecf\u5e72\u8fc7\u5f88\u591a\u7c7b\u4f3c\u7684\u9879\u76ee\u3002\u4f60\u4eec\u90fd\u77e5\u9053\u4ee3\u7801\u5e94\u8be5\u7528\u56db\u4e2a\u7a7a\u683c\u7f29\u8fdb\uff0c\u5bf9\u5427\uff1f\u7b49\u7b49\uff01\u7a76\u7adf\u662f\u56db\u4e2a\u7a7a\u683c\u8fd8\u662f\u4e00\u4e2a\u5236\u8868\u7b26\u5462\uff1f<\/p>\n<p>\u5728\u4e24\u4e2a\u5f00\u53d1\u8005\u4e4b\u95f4\u6700\u5feb\u5f15\u53d1\u4e89\u8bba\u7684\u65b9\u5f0f\u5c31\u662f\u8ba8\u8bba\u7f16\u7801\u89c4\u8303\u3002\u6bcf\u4e2a\u4eba\u90fd\u6709\u81ea\u5df1\u9075\u5faa\u7684\u6807\u51c6\uff0c\u5e76\u4e14\u6bcf\u4e2a\u4eba\u90fd\u8ba4\u4e3a\u81ea\u5df1\u7684\u6807\u51c6\u662f\u6700\u597d\u7684\u3002\u5982\u679c\u6211\u4eec\u6709\u4e00\u4e2a\u7edf\u4e00\u7684\u6807\u51c6\uff0c\u90a3\u4e48\u5e76\u4e0d\u662f\u6bcf\u4e2a\u4eba\u90fd\u4f1a\u540c\u610f\uff0c\u4f46\u5373\u4f7f\u5b83\u4e0d\u5b8c\u7f8e\uff0c\u4e00\u81f4\u6027\u4e5f\u610f\u5473\u7740\u5b83\u6bd4\u5b8c\u5168\u6ca1\u6709\u6807\u51c6\u8981\u597d\u3002<\/p>\n<p>\u6839\u636e\u9879\u76ee\u7684\u89c4\u6a21\u548c\u590d\u6742\u6027\uff0c\u7f16\u7801\u6807\u51c6\u5728\u5176\u5168\u9762\u6027\u65b9\u9762\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u7136\u800c\uff0c\u5b83\u4eec\u5c06\u6db5\u76d6\u98ce\u683c\u9009\u62e9\u548c\u6280\u672f\u8003\u8651\u3002<\/p>\n<p>\u4e0e\u6280\u672f\u6807\u51c6\u4e0d\u540c\uff0c\u5173\u4e8e\u98ce\u683c\u6807\u51c6\u7684\u4e00\u4e2a\u7b80\u5355\u4e8b\u5b9e\u662f\uff0c\u53ea\u8981\u4f60\u6709\u6807\u51c6\u5e76\u5728\u6574\u4e2a\u9879\u76ee\u4e2d\u4e00\u81f4\u5b9e\u65bd\uff0c\u6807\u51c6\u5177\u4f53\u5185\u5bb9\u5b9e\u9645\u4e0a\u5e76\u4e0d\u91cd\u8981\u3002<\/p>\n<p>\u7f16\u7801\u6807\u51c6\u5c31\u662f\u67b6\u6784\u53d1\u6325\u4f5c\u7528\u7684\u5730\u65b9\u3002\u5728\u9519\u8bef1# \u4e2d\u6211\u4eec\u8ba8\u8bba\u4e86\u5728 SQL Server \u9879\u76ee\u4e2d\u5236\u5b9a\u67b6\u6784\u7684\u5fc5\u8981\u6027\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u5e93\u6a21\u5f0f\u5f97\u5230\u6700\u4f73\u8bbe\u8ba1\u5e76\u5177\u6709\u9ad8\u6027\u80fd\u3002\u6211\u4eec\u8fd8\u63d0\u5230\uff0c\u8fd9\u79cd\u67b6\u6784\u5e94\u8003\u8651\u547d\u540d\u89c4\u8303\u3002\u67b6\u6784\u7684\u53e6\u4e00\u4e2a\u65b9\u9762\u662f\u786e\u4fdd\u6709\u4e00\u5957\u7f16\u7801\u6807\u51c6\u4f9b\u4eba\u4eec\u9075\u5faa\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u98ce\u683c\u9009\u62e9\u53ef\u80fd\u5305\u62ec\u4ee5\u4e0b\u5143\u7d20\uff0c\u4f8b\u5982\uff1a<\/strong><\/p>\n<ul>\n<li>\u4ee3\u7801\u7f29\u8fdb\u4f7f\u7528\u56db\u4e2a\u7a7a\u683c\u8fd8\u662f\u5236\u8868\u7b26\uff1f<\/li>\n<li>\u6240\u6709\u8bed\u53e5\u662f\u5426\u90fd\u5e94\u4ee5\u5206\u53f7\u7ed3\u5c3e\uff1f<\/li>\n<li>\u5728\u5217\u51fa\u5217\u540d\u65f6\uff0c\u9017\u53f7\u5206\u9694\u7b26\u5e94\u8be5\u653e\u5728\u884c\u672b\u8fd8\u662f\u4e0b\u4e00\u884c\u7684\u5f00\u5934\uff1f<\/li>\n<li>ON \u5b50\u53e5\u662f\u5426\u5e94\u4e0e JOIN \u5b50\u53e5\u5199\u5728\u540c\u4e00\u884c\uff1f<\/li>\n<li>SQL Server \u5173\u952e\u5b57\u662f\u5426\u90fd\u5e94\u5927\u5199\uff1f<\/li>\n<li>\u4f7f\u7528\u9a7c\u5cf0\u547d\u540d\u6cd5\u8fd8\u662f\u5e15\u65af\u5361\u547d\u540d\u6cd5\uff1f<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>\u6280\u672f\u6807\u51c6\u53ef\u80fd\u5305\u62ec\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/strong><\/p>\n<ul>\n<li>\u4e0d\u8981\u4f7f\u7528\u6e38\u6807\u3002<\/li>\n<li>\u5c3d\u53ef\u80fd\u4f7f\u7528 UNION ALL \u800c\u4e0d\u662f UNION\u3002<\/li>\n<li>\u4e0d\u8981\u5728 SELECT \u5217\u8868\u4e2d\u4f7f\u7528 *\u3002<\/li>\n<li>\u4e0d\u8981\u4f7f\u7528 NOLOCK\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528 DISTINCT\u3002<\/li>\n<\/ul>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>\u9519\u8bef5\uff1a\u4f7f\u7528\u5e8f\u6570\u5217\u4f4d\u7f6e<\/strong><\/p>\n<p>SQL Server \u652f\u6301\u5728 ORDER BY \u5b50\u53e5\u4e2d\u4f7f\u7528\u5e8f\u53f7\u5217\u3002\u8fd9\u610f\u5473\u7740\uff0c\u4f60\u53ef\u4ee5\u4e0d\u6309\u7167\u5217\u540d\u6392\u5e8f\uff0c\u800c\u662f\u6309\u7167\u5176\u5728 SELECT \u5b50\u53e5\u4e2d\u7684\u5e8f\u53f7\u4f4d\u7f6e\u8fdb\u884c\u6392\u5e8f\u3002\u4f8b\u5982\uff0c\u8003\u8651\u4e0b\u5217\u6e05\u5355\u4e2d\u7684\u67e5\u8be2\u3002<\/p>\n<blockquote><p>SELECT *<\/p>\n<p>FROM SYS.databases<\/p>\n<p>ORDER BY 54 ;<\/p><\/blockquote>\n<p>\u90a3\u4e48\u6211\u4eec\u6309\u54ea\u4e00\u5217\u5bf9\u67e5\u8be2\u8fdb\u884c\u4e86\u6392\u5e8f\u5462\uff1f\u7b54\u6848\u662f log_reuse_wait_desc \u5217\uff0c\u4f46\u786e\u5b9a\u8fd9\u4e00\u70b9\u7684\u552f\u4e00\u65b9\u6cd5\u662f\u8981\u4e48\u6570\u7ed3\u679c\u96c6\u4e2d\u7684\u5217\u76f4\u5230\u7b2c 54 \u5217\uff0c\u8981\u4e48\u8fd0\u884c\u6e05\u5355 2.16 \u4e2d\u7684\u67e5\u8be2\uff0c\u8be5\u67e5\u8be2\u4ece\u76ee\u5f55\u89c6\u56fe\u4e2d\u4fdd\u5b58\u7684\u5143\u6570\u636e\u4e2d\u63d0\u53d6\u5217\u540d\u3002<\/p>\n<blockquote><p>SELECT<\/p>\n<p>c.name<\/p>\n<p>FROM SYS.all_columns c<\/p>\n<p>INNER JOIN SYS.all_objects o<\/p>\n<p>ON o.object_id = c.object_id<\/p>\n<p>WHERE o.name = &#8216;databases&#8217;<\/p>\n<p>AND c.column_id = 54 ;<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>\u907f\u514d\u4f7f\u7528\u5e8f\u53f7\u5217\u4f4d\u7f6e\u7684\u53e6\u4e00\u4e2a\u597d\u7406\u7531\u662f\uff0c\u5f53\u5e95\u5c42\u8868\u88ab\u4fee\u6539\u65f6\uff0c\u5e8f\u53f7\u5217\u4f4d\u7f6e\u5e76\u4e0d\u7a33\u5b9a\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8868\u4e2d\u7684\u7b2c\u4e8c\u5217\u88ab\u5220\u9664\uff0c\u90a3\u4e48\u6240\u6709\u5f15\u7528\u7b2c3\u5217\u53ca\u4e4b\u540e\u5217\u7684\u67e5\u8be2\u90fd\u9700\u8981\u66f4\u65b0\uff0c\u56e0\u4e3a\u5e8f\u53f7\u4f4d\u7f6e\u5df2\u7ecf\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>\u603b\u7ed3\uff1a<\/strong><\/p>\n<ul>\n<li>\u59cb\u7ec8\u4f7f\u7528\u6709\u610f\u4e49\u7684\u5bf9\u8c61\u540d\u79f0\uff0c\u4ee5\u4fbf\u8ba9\u4f60\u7684\u4ee3\u7801\u5177\u6709\u81ea\u6211\u8bf4\u660e\u6027\u3002<\/li>\n<li>\u59cb\u7ec8\u8003\u8651\u6570\u636e\u5e93\u67b6\u6784\uff0c\u5373\u4f7f\u5728\u654f\u6377\u9879\u76ee\u4e2d\u4e5f\u662f\u5982\u6b64\u3002<\/li>\n<li>\u907f\u514d\u4e3a\u6570\u636e\u5e93\u5bf9\u8c61\u4f7f\u7528\u524d\u7f00\uff0c\u56e0\u4e3a\u8fd9\u5b9e\u9645\u4e0a\u53ef\u80fd\u4f1a\u4f7f\u5bf9\u8c61\u66f4\u96be\u627e\u5230\u3002<\/li>\n<li>\u5c24\u5176\u8981\u5c0f\u5fc3\u907f\u514d\u4e3a\u5b58\u50a8\u8fc7\u7a0b\u4f7f\u7528 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50,3,48],"tags":[],"class_list":["post-436","post","type-post","status-publish","format-standard","hentry","category-100-sql-server-mistakes-and-how-to-avoid-them-","category-sql-server","category-48"],"_links":{"self":[{"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/posts\/436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/comments?post=436"}],"version-history":[{"count":1,"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/posts\/436\/revisions"}],"predecessor-version":[{"id":439,"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/posts\/436\/revisions\/439"}],"wp:attachment":[{"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/media?parent=436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/categories?post=436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.kingster.cn\/index.php\/wp-json\/wp\/v2\/tags?post=436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}