{"id":195953,"date":"2024-11-13T19:18:19","date_gmt":"2024-11-13T11:18:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195953\/"},"modified":"2024-11-13T19:18:20","modified_gmt":"2024-11-13T11:18:20","slug":"%e6%80%8e%e6%a8%a3%e5%9c%a8sql-server%e4%b8%ad%e5%8e%bb%e9%99%a4%e8%a1%a8%e4%b8%ad%e4%b8%8d%e5%8f%af%e8%a6%8b%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195953\/","title":{"rendered":"\u600e\u6a23\u5728SQL Server\u4e2d\u53bb\u9664\u8868\u4e2d\u4e0d\u53ef\u898b\u5b57\u7b26"},"content":{"rendered":"<h1 id=\"%e6%80%8e%e6%a8%a3%e5%9c%a8sql-server%e4%b8%ad%e5%8e%bb%e9%99%a4%e8%a1%a8%e4%b8%ad%e4%b8%8d%e5%8f%af%e8%a6%8b%e5%ad%97%e7%ac%a6-VswAOYkhjA\">\u600e\u6a23\u5728SQL Server\u4e2d\u53bb\u9664\u8868\u4e2d\u4e0d\u53ef\u898b\u5b57\u7b26<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u8655\u7406\u4e0d\u53ef\u898b\u5b57\u7b26\u662f\u4e00\u500b\u5e38\u898b\u7684\u6311\u6230\u3002\u9019\u4e9b\u5b57\u7b26\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u7684\u6e96\u78ba\u6027\u3002\u5728SQL Server\u4e2d\uff0c\u53bb\u9664\u8868\u4e2d\u4e0d\u53ef\u898b\u5b57\u7b26\u7684\u904e\u7a0b\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u6cd5\u5be6\u73fe\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u4e9b\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%8d%e5%8f%af%e8%a6%8b%e5%ad%97%e7%ac%a6%ef%bc%9f-VswAOYkhjA\">\u4ec0\u9ebc\u662f\u4e0d\u53ef\u898b\u5b57\u7b26\uff1f<\/h2>\n<p>\u4e0d\u53ef\u898b\u5b57\u7b26\u662f\u6307\u5728\u6587\u672c\u4e2d\u4e0d\u6703\u986f\u793a\u7684\u5b57\u7b26\uff0c\u4f8b\u5982\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u63db\u884c\u7b26\u7b49\u3002\u9019\u4e9b\u5b57\u7b26\u5728\u6578\u64da\u8655\u7406\u904e\u7a0b\u4e2d\u53ef\u80fd\u6703\u5c0e\u81f4\u554f\u984c\uff0c\u4f8b\u5982\u5728\u5b57\u7b26\u4e32\u6bd4\u8f03\u6642\u51fa\u73fe\u4e0d\u5fc5\u8981\u7684\u932f\u8aa4\u3002\u5e38\u898b\u7684\u4e0d\u53ef\u898b\u5b57\u7b26\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u7a7a\u683c\uff08Space\uff09<\/li>\n<li>\u5236\u8868\u7b26\uff08Tab\uff09<\/li>\n<li>\u63db\u884c\u7b26\uff08New Line\uff09<\/li>\n<li>\u56de\u8eca\u7b26\uff08Carriage Return\uff09<\/li>\n<li>\u96f6\u5bec\u7a7a\u683c\uff08Zero Width Space\uff09<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ad%98%e5%88%a5%e4%b8%8d%e5%8f%af%e8%a6%8b%e5%ad%97%e7%ac%a6-VswAOYkhjA\">\u5982\u4f55\u8b58\u5225\u4e0d\u53ef\u898b\u5b57\u7b26<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u5167\u7f6e\u51fd\u6578\u4f86\u8b58\u5225\u4e0d\u53ef\u898b\u5b57\u7b26\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 <code>LEN<\/code> \u548c <code>DATALENGTH<\/code> \u51fd\u6578\u4f86\u6aa2\u67e5\u5b57\u7b26\u4e32\u7684\u9577\u5ea6\u5dee\u7570\uff1a<\/p>\n<pre><code>\nSELECT \n    column_name,\n    LEN(column_name) AS StringLength,\n    DATALENGTH(column_name) AS ByteLength\nFROM \n    your_table\nWHERE \n    LEN(column_name) &lt; DATALENGTH(column_name);\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u6240\u6709\u5305\u542b\u4e0d\u53ef\u898b\u5b57\u7b26\u7684\u884c\uff0c\u56e0\u70ba\u9019\u4e9b\u884c\u7684\u5b57\u7bc0\u9577\u5ea6\u5c07\u5927\u65bc\u5b57\u7b26\u9577\u5ea6\u3002<\/p>\n<h2 id=\"%e5%8e%bb%e9%99%a4%e4%b8%8d%e5%8f%af%e8%a6%8b%e5%ad%97%e7%ac%a6%e7%9a%84%e6%96%b9%e6%b3%95-VswAOYkhjA\">\u53bb\u9664\u4e0d\u53ef\u898b\u5b57\u7b26\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728\u8b58\u5225\u4e86\u4e0d\u53ef\u898b\u5b57\u7b26\u4e4b\u5f8c\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u5c07\u5176\u53bb\u9664\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3>1. \u4f7f\u7528 <code>REPLACE<\/code> \u51fd\u6578<\/h3>\n<p>\u53ef\u4ee5\u4f7f\u7528 <code>REPLACE<\/code> \u51fd\u6578\u4f86\u66ff\u63db\u7279\u5b9a\u7684\u4e0d\u53ef\u898b\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u78bc\u5c07\u53bb\u9664\u7a7a\u683c\u548c\u5236\u8868\u7b26\uff1a<\/p>\n<pre><code>\nUPDATE your_table\nSET column_name = REPLACE(REPLACE(column_name, CHAR(9), ''), ' ', '')\nWHERE column_name LIKE '%' + CHAR(9) + '%' OR column_name LIKE '% %';\n<\/code><\/pre>\n<h3>2. \u4f7f\u7528 <code>LTRIM<\/code> \u548c <code>RTRIM<\/code> \u51fd\u6578<\/h3>\n<p>\u5982\u679c\u9700\u8981\u53bb\u9664\u5b57\u7b26\u4e32\u958b\u982d\u548c\u7d50\u5c3e\u7684\u7a7a\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>LTRIM<\/code> \u548c <code>RTRIM<\/code> \u51fd\u6578\uff1a<\/p>\n<pre><code>\nUPDATE your_table\nSET column_name = LTRIM(RTRIM(column_name));\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f%ef%bc%88sql-server-2016%e5%8f%8a%e4%bb%a5%e4%b8%8a%e7%89%88%e6%9c%ac%ef%bc%89-VswAOYkhjA\">3. \u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\uff08SQL Server 2016\u53ca\u4ee5\u4e0a\u7248\u672c\uff09<\/h3>\n<p>\u5728SQL Server 2016\u53ca\u4ee5\u4e0a\u7248\u672c\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>TRANSLATE<\/code> \u51fd\u6578\u4f86\u53bb\u9664\u591a\u500b\u4e0d\u53ef\u898b\u5b57\u7b26\uff1a<\/p>\n<pre><code>\nUPDATE your_table\nSET column_name = TRANSLATE(column_name, CHAR(9) + CHAR(10) + CHAR(13), '')\nWHERE column_name LIKE '%' + CHAR(9) + '%' OR column_name LIKE '%' + CHAR(10) + '%' OR column_name LIKE '%' + CHAR(13) + '%';\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VswAOYkhjA\">\u7e3d\u7d50<\/h2>\n<p>\u5728SQL Server\u4e2d\u53bb\u9664\u8868\u4e2d\u4e0d\u53ef\u898b\u5b57\u7b26\u662f\u4e00\u500b\u91cd\u8981\u7684\u6578\u64da\u6e05\u7406\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528 <code>REPLACE<\/code>\u3001<code>LTRIM<\/code>\u3001<code>RTRIM<\/code> \u548c <code>TRANSLATE<\/code> \u7b49\u51fd\u6578\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u8655\u7406\u9019\u4e9b\u5b57\u7b26\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u8cea\u91cf\u548c\u67e5\u8a62\u7684\u6e96\u78ba\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728SQL Server\u4e2d\u53bb\u9664\u8868\u4e2d\u4e0d\u53ef\u898b\u5b57\u7b26\uff0c\u63d0\u5347\u6578\u64da\u8cea\u91cf\uff0c\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u7684\u6e96\u78ba\u6027\u548c\u53ef\u9760\u6027\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-195953","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195953","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=195953"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195953\/revisions"}],"predecessor-version":[{"id":195954,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195953\/revisions\/195954"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}