{"id":64825,"date":"2024-10-14T11:59:13","date_gmt":"2024-10-14T03:59:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64825\/"},"modified":"2024-10-14T11:59:14","modified_gmt":"2024-10-14T03:59:14","slug":"mssql%e5%bf%ab%e9%80%9f%e5%8e%bb%e9%99%a4%e5%ad%97%e6%ae%b5%e4%b8%ad%e7%a9%ba%e7%99%bd%e7%ac%a6%e7%9a%84%e6%8a%80%e5%b7%a7%ef%bc%88mssql%e5%ad%97%e6%ae%b5%e5%8e%bb%e7%a9%ba%e6%a0%bc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64825\/","title":{"rendered":"MSSQL\u5feb\u901f\u53bb\u9664\u5b57\u6bb5\u4e2d\u7a7a\u767d\u7b26\u7684\u6280\u5de7\uff08mssql\u5b57\u6bb5\u53bb\u7a7a\u683c\uff09"},"content":{"rendered":"

MSSQL\u5feb\u901f\u53bb\u9664\u5b57\u6bb5\u4e2d\u7a7a\u767d\u7b26\u7684\u6280\u5de7\uff08mssql\u5b57\u6bb5\u53bb\u7a7a\u683c\uff09<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u7a7a\u767d\u7b26\u7684\u5b58\u5728\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u67e5\u8a62\u6548\u7387\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528 Microsoft SQL Server (MSSQL) \u6642\uff0c\u53bb\u9664\u5b57\u6bb5\u4e2d\u7684\u7a7a\u767d\u7b26\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u7684\u6280\u5de7\uff0c\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u53bb\u9664 MSSQL \u5b57\u6bb5\u4e2d\u7684\u7a7a\u767d\u7b26\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u53bb\u9664\u7a7a\u767d\u7b26<\/h2>\n

\u7a7a\u767d\u7b26\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\uff0c\u5f71\u97ff\u67e5\u8a62\u7d50\u679c\u3002\u4f8b\u5982\uff0c\u5728\u9032\u884c\u5b57\u7b26\u4e32\u6bd4\u8f03\u6642\uff0c\u7a7a\u767d\u7b26\u6703\u4f7f\u5f97\u76f8\u540c\u7684\u5b57\u7b26\u4e32\u88ab\u8996\u70ba\u4e0d\u540c\u7684\u503c\u3002\u6b64\u5916\uff0c\u7a7a\u767d\u7b26\u9084\u53ef\u80fd\u5f71\u97ff\u6578\u64da\u7684\u6392\u5e8f\u548c\u5206\u7d44\u64cd\u4f5c\u3002\u56e0\u6b64\uff0c\u5b9a\u671f\u6e05\u7406\u6578\u64da\u4e2d\u7684\u7a7a\u767d\u7b26\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n

\u4f7f\u7528 TRIM \u51fd\u6578<\/h2>\n

MSSQL 2017 \u53ca\u4ee5\u5f8c\u7684\u7248\u672c\u5f15\u5165\u4e86 TRIM<\/code> \u51fd\u6578\uff0c\u9019\u662f\u4e00\u500b\u975e\u5e38\u65b9\u4fbf\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u53bb\u9664\u5b57\u7b26\u4e32\u524d\u5f8c\u7684\u7a7a\u767d\u7b26\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 TRIM<\/code> \u51fd\u6578\u7684\u7bc4\u4f8b\uff1a<\/p>\n

SELECT TRIM(column_name) AS CleanedColumn\nFROM table_name;<\/code><\/pre>\n
\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u5f9e\u6307\u5b9a\u7684\u5b57\u6bb5\u4e2d\u53bb\u9664\u524d\u5f8c\u7684\u7a7a\u767d\u7b26\uff0c\u4e26\u8fd4\u56de\u6e05\u7406\u5f8c\u7684\u7d50\u679c\u3002<\/p>\n
\u4f7f\u7528 LTRIM \u548c RTRIM \u51fd\u6578<\/h2>\n
\u5c0d\u65bc\u65e9\u671f\u7248\u672c\u7684 MSSQL\uff0c\u7528\u6236\u53ef\u4ee5\u4f7f\u7528 LTRIM<\/code> \u548c RTRIM<\/code> \u51fd\u6578\u4f86\u5206\u5225\u53bb\u9664\u5b57\u7b26\u4e32\u5de6\u5074\u548c\u53f3\u5074\u7684\u7a7a\u767d\u7b26\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n
SELECT LTRIM(RTRIM(column_name)) AS CleanedColumn\nFROM table_name;<\/code><\/pre>\n
\u9019\u6bb5 SQL \u8a9e\u53e5\u9996\u5148\u4f7f\u7528 RTRIM<\/code> \u53bb\u9664\u53f3\u5074\u7684\u7a7a\u767d\u7b26\uff0c\u7136\u5f8c\u4f7f\u7528 LTRIM<\/code> \u53bb\u9664\u5de6\u5074\u7684\u7a7a\u767d\u7b26\uff0c\u6700\u7d42\u8fd4\u56de\u6e05\u7406\u5f8c\u7684\u7d50\u679c\u3002<\/p>\n
\u66f4\u65b0\u8868\u4e2d\u7684\u6578\u64da<\/h2>\n
\u5982\u679c\u9700\u8981\u5728\u8868\u4e2d\u66f4\u65b0\u6578\u64da\u4ee5\u53bb\u9664\u7a7a\u767d\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n
UPDATE table_name\nSET column_name = TRIM(column_name)\nWHERE column_name IS NOT NULL;<\/code><\/pre>\n
\u9019\u6bb5\u8a9e\u53e5\u5c07\u66f4\u65b0\u6307\u5b9a\u8868\u4e2d\u7684\u6240\u6709\u884c\uff0c\u5c07\u5b57\u6bb5\u4e2d\u7684\u7a7a\u767d\u7b26\u53bb\u9664\u3002<\/p>\n
\u4f7f\u7528 REPLACE \u51fd\u6578\u53bb\u9664\u4e2d\u9593\u7684\u7a7a\u767d\u7b26<\/h2>\n
\u5982\u679c\u9700\u8981\u53bb\u9664\u5b57\u7b26\u4e32\u4e2d\u9593\u7684\u7a7a\u767d\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528 REPLACE<\/code> \u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n
SELECT REPLACE(column_name, ' ', '') AS CleanedColumn\nFROM table_name;<\/code><\/pre>\n
\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u6240\u6709\u7684\u7a7a\u767d\u7b26\u66ff\u63db\u70ba\u7a7a\u5b57\u7b26\u4e32\uff0c\u5f9e\u800c\u53bb\u9664\u5b57\u6bb5\u4e2d\u7684\u6240\u6709\u7a7a\u767d\u7b26\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728 MSSQL \u4e2d\uff0c\u53bb\u9664\u5b57\u6bb5\u4e2d\u7684\u7a7a\u767d\u7b26\u662f\u4e00\u500b\u91cd\u8981\u7684\u6578\u64da\u6e05\u7406\u6b65\u9a5f\u3002\u7121\u8ad6\u662f\u4f7f\u7528 TRIM<\/code>\u3001LTRIM<\/code>\u3001RTRIM<\/code> \u9084\u662f REPLACE<\/code> \u51fd\u6578\uff0c\u9019\u4e9b\u6280\u5de7\u90fd\u80fd\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\uff0c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u5b9a\u671f\u9032\u884c\u6578\u64da\u6e05\u7406\u4e0d\u50c5\u80fd\u63d0\u5347\u6578\u64da\u8cea\u91cf\uff0c\u9084\u80fd\u589e\u5f37\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u9999\u6e2fVPS<\/a> \u53ca\u5176\u76f8\u95dc\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u638c\u63e1MSSQL\u5feb\u901f\u53bb\u9664\u5b57\u6bb5\u4e2d\u7a7a\u767d\u7b26\u7684\u6280\u5de7\uff0c\u63d0\u5347\u6570\u636e\u5904\u7406\u6548\u7387\uff0c\u8f7b\u677e\u5b9e\u73b0\u5b57\u6bb5\u53bb\u7a7a\u683c\u64cd\u4f5c\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-64825","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64825","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=64825"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64825\/revisions"}],"predecessor-version":[{"id":64826,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64825\/revisions\/64826"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}