{"id":66149,"date":"2024-10-14T14:58:17","date_gmt":"2024-10-14T06:58:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66149\/"},"modified":"2024-10-14T14:58:17","modified_gmt":"2024-10-14T06:58:17","slug":"mssql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8c%af%e8%aa%a41406%ef%bc%9a%e8%a7%a3%e6%b1%ba%e4%b9%8b%e9%81%93%ef%bc%88mssql%e9%8c%af%e8%aa%a41406%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66149\/","title":{"rendered":"MSSQL\u6578\u64da\u5eab\u932f\u8aa41406\uff1a\u89e3\u6c7a\u4e4b\u9053\uff08mssql\u932f\u8aa41406\uff09"},"content":{"rendered":"<h1 id=\"mssql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8c%af%e8%aa%a41406%ef%bc%9a%e8%a7%a3%e6%b1%ba%e4%b9%8b%e9%81%93%ef%bc%88mssql%e9%8c%af%e8%aa%a41406%ef%bc%89-ihOpcZDAry\">MSSQL\u6578\u64da\u5eab\u932f\u8aa41406\uff1a\u89e3\u6c7a\u4e4b\u9053\uff08mssql\u932f\u8aa41406\uff09<\/h1>\n<p>\u5728\u4f7f\u7528Microsoft SQL Server\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u932f\u8aa4\u4ee3\u78bc1406\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8868\u793a\u5728\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u6642\uff0c\u6578\u64da\u7684\u9577\u5ea6\u8d85\u904e\u4e86\u76ee\u6a19\u5217\u7684\u6700\u5927\u9577\u5ea6\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMSSQL\u932f\u8aa41406\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a41406%e7%9a%84%e5%8e%9f%e5%9b%a0-ihOpcZDAry\">\u932f\u8aa41406\u7684\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41406\u7684\u5177\u9ad4\u4fe1\u606f\u901a\u5e38\u662f\uff1a\u201c\u5b57\u7b26\u4e32\u6216\u4e8c\u9032\u5236\u6578\u64da\u5c07\u88ab\u622a\u65b7\u3002\u201d\u9019\u610f\u5473\u8457\u60a8\u5617\u8a66\u63d2\u5165\u7684\u6578\u64da\u8d85\u51fa\u4e86\u5217\u7684\u5b9a\u7fa9\u9577\u5ea6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u5217\u5b9a\u7fa9\u4e0d\u7576\uff1a<\/strong>\u5728\u5275\u5efa\u8868\u6642\uff0c\u67d0\u4e9b\u5217\u7684\u6578\u64da\u985e\u578b\u53ef\u80fd\u88ab\u8a2d\u7f6e\u5f97\u904e\u5c0f\u3002\u4f8b\u5982\uff0cVARCHAR(50)\u7684\u5217\u53ea\u80fd\u5b58\u5132\u6700\u591a50\u500b\u5b57\u7b26\uff0c\u5982\u679c\u60a8\u5617\u8a66\u63d2\u516561\u500b\u5b57\u7b26\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\uff1a<\/strong>\u5982\u679c\u60a8\u5617\u8a66\u5c07\u4e00\u500b\u6578\u64da\u985e\u578b\u7684\u503c\u63d2\u5165\u5230\u53e6\u4e00\u500b\u4e0d\u517c\u5bb9\u7684\u6578\u64da\u985e\u578b\u4e2d\uff0c\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u6e05\u7406\u4e0d\u8db3\uff1a<\/strong>\u5728\u63d2\u5165\u6578\u64da\u4e4b\u524d\uff0c\u5982\u679c\u672a\u5c0d\u6578\u64da\u9032\u884c\u9069\u7576\u7684\u6e05\u7406\u548c\u9a57\u8b49\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u8d85\u51fa\u5217\u9577\u5ea6\u7684\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba%e9%8c%af%e8%aa%a41406-ihOpcZDAry\">\u5982\u4f55\u89e3\u6c7a\u932f\u8aa41406<\/h2>\n<p>\u89e3\u6c7aMSSQL\u932f\u8aa41406\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e5%88%97%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e5%92%8c%e9%95%b7%e5%ba%a6-ihOpcZDAry\">1. \u6aa2\u67e5\u5217\u7684\u6578\u64da\u985e\u578b\u548c\u9577\u5ea6<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u6aa2\u67e5\u51fa\u73fe\u932f\u8aa4\u7684\u5217\u7684\u6578\u64da\u985e\u578b\u548c\u9577\u5ea6\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u67e5\u770b\u8868\u7d50\u69cb\uff1a<\/p>\n<pre><code>SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH \nFROM INFORMATION_SCHEMA.COLUMNS \nWHERE TABLE_NAME = '\u60a8\u7684\u8868\u540d';<\/code><\/pre>\n<p>\u6839\u64da\u67e5\u8a62\u7d50\u679c\uff0c\u60a8\u53ef\u4ee5\u78ba\u5b9a\u662f\u5426\u9700\u8981\u8abf\u6574\u5217\u7684\u9577\u5ea6\u3002<\/p>\n<h3 id=\"2-%e8%aa%bf%e6%95%b4%e5%88%97%e7%9a%84%e9%95%b7%e5%ba%a6-ihOpcZDAry\">2. \u8abf\u6574\u5217\u7684\u9577\u5ea6<\/h3>\n<p>\u5982\u679c\u78ba\u5b9a\u5217\u7684\u9577\u5ea6\u4e0d\u8db3\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u4f86\u4fee\u6539\u5217\u7684\u5b9a\u7fa9\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE \u60a8\u7684\u8868\u540d \nALTER COLUMN \u60a8\u7684\u5217\u540d VARCHAR(100);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5c07\u5217\u7684\u9577\u5ea6\u64f4\u5c55\u5230100\u500b\u5b57\u7b26\u3002<\/p>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e9%a9%97%e8%ad%89%e5%92%8c%e6%b8%85%e7%90%86-ihOpcZDAry\">3. \u6578\u64da\u9a57\u8b49\u548c\u6e05\u7406<\/h3>\n<p>\u5728\u63d2\u5165\u6578\u64da\u4e4b\u524d\uff0c\u61c9\u8a72\u5c0d\u6578\u64da\u9032\u884c\u9a57\u8b49\u548c\u6e05\u7406\uff0c\u4ee5\u78ba\u4fdd\u4e0d\u6703\u8d85\u51fa\u5217\u7684\u9577\u5ea6\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u9032\u884c\u9a57\u8b49\uff1a<\/p>\n<pre><code>IF LEN(@\u60a8\u7684\u8b8a\u91cf) &gt; 50 \nBEGIN \n    PRINT '\u6578\u64da\u8d85\u51fa\u9577\u5ea6\u9650\u5236'; \nEND;<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8try-catch%e7%b5%90%e6%a7%8b-ihOpcZDAry\">4. \u4f7f\u7528TRY&#8230;CATCH\u7d50\u69cb<\/h3>\n<p>\u5728\u9032\u884c\u6578\u64da\u63d2\u5165\u6216\u66f4\u65b0\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528TRY&#8230;CATCH\u7d50\u69cb\u4f86\u6355\u7372\u932f\u8aa4\uff0c\u5f9e\u800c\u907f\u514d\u61c9\u7528\u7a0b\u5e8f\u5d29\u6f70\uff1a<\/p>\n<pre><code>BEGIN TRY \n    INSERT INTO \u60a8\u7684\u8868\u540d (\u60a8\u7684\u5217\u540d) VALUES (@\u60a8\u7684\u8b8a\u91cf); \nEND TRY \nBEGIN CATCH \n    PRINT ERROR_MESSAGE(); \nEND CATCH;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ihOpcZDAry\">\u7e3d\u7d50<\/h2>\n<p>MSSQL\u932f\u8aa41406\u901a\u5e38\u662f\u7531\u65bc\u6578\u64da\u8d85\u51fa\u5217\u7684\u6700\u5927\u9577\u5ea6\u800c\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u5217\u7684\u6578\u64da\u985e\u578b\u3001\u8abf\u6574\u5217\u7684\u9577\u5ea6\u3001\u9032\u884c\u6578\u64da\u9a57\u8b49\u548c\u4f7f\u7528\u932f\u8aa4\u6355\u7372\u6a5f\u5236\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7aMSSQL\u6578\u64da\u5eab\u932f\u8aa41406\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u5e6b\u52a9\u60a8\u5feb\u901f\u6392\u9664\u554f\u984c\uff0c\u6062\u5fa9\u6578\u64da\u5eab\u6b63\u5e38\u904b\u884c\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-66149","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66149","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=66149"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66149\/revisions"}],"predecessor-version":[{"id":66150,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66149\/revisions\/66150"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}