{"id":64829,"date":"2024-10-14T12:00:16","date_gmt":"2024-10-14T04:00:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64829\/"},"modified":"2024-10-14T12:00:16","modified_gmt":"2024-10-14T04:00:16","slug":"mssql%e5%8e%bb%e9%99%a4%e5%a4%9a%e9%a4%98%e7%a9%ba%e6%a0%bc%ef%bc%8c%e9%87%8d%e6%96%b0%e6%8e%92%e5%88%97%e6%95%b8%e6%93%9a%ef%bc%88mssql%e5%8e%bb%e7%a9%ba%e6%a0%bc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64829\/","title":{"rendered":"MSSQL\u53bb\u9664\u591a\u9918\u7a7a\u683c\uff0c\u91cd\u65b0\u6392\u5217\u6578\u64da\uff08mssql\u53bb\u7a7a\u683c\uff09"},"content":{"rendered":"

MSSQL\u53bb\u9664\u591a\u9918\u7a7a\u683c\uff0c\u91cd\u65b0\u6392\u5217\u6578\u64da\uff08MSSQL\u53bb\u7a7a\u683c\uff09<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u7684\u6574\u6f54\u6027\u548c\u4e00\u81f4\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528Microsoft SQL Server\uff08MSSQL\uff09\u6642\uff0c\u6578\u64da\u4e2d\u7684\u591a\u9918\u7a7a\u683c\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u7d50\u679c\u4e0d\u6e96\u78ba\uff0c\u5f71\u97ff\u6578\u64da\u5206\u6790\u7684\u7d50\u679c\u3002\u56e0\u6b64\uff0c\u5b78\u6703\u5982\u4f55\u53bb\u9664\u591a\u9918\u7a7a\u683c\u4e26\u91cd\u65b0\u6392\u5217\u6578\u64da\u662f\u6bcf\u4f4d\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u53bb\u9664\u591a\u9918\u7a7a\u683c\uff1f<\/h2>\n

\u591a\u9918\u7684\u7a7a\u683c\u53ef\u80fd\u51fa\u73fe\u5728\u6578\u64da\u7684\u958b\u982d\u3001\u7d50\u5c3e\u6216\u4e2d\u9593\uff0c\u9019\u4e9b\u7a7a\u683c\u4e0d\u50c5\u6703\u5f71\u97ff\u6578\u64da\u7684\u53ef\u8b80\u6027\uff0c\u9084\u53ef\u80fd\u5c0e\u81f4\u67e5\u8a62\u6642\u7684\u5339\u914d\u554f\u984c\u3002\u4f8b\u5982\uff0c\u7576\u7528\u6236\u5728\u67e5\u8a62\u6642\u8f38\u5165\u4e86\u5e36\u6709\u7a7a\u683c\u7684\u5b57\u7b26\u4e32\uff0c\u7cfb\u7d71\u53ef\u80fd\u7121\u6cd5\u6b63\u78ba\u5339\u914d\u5230\u76f8\u61c9\u7684\u8a18\u9304\u3002\u9019\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6216\u5831\u544a\u751f\u6210\u6642\uff0c\u6703\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u9ebb\u7169\u3002<\/p>\n

MSSQL\u4e2d\u53bb\u9664\u7a7a\u683c\u7684\u65b9\u6cd5<\/h2>\n

\u5728MSSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5167\u5efa\u7684\u51fd\u6578\u4f86\u53bb\u9664\u591a\u9918\u7684\u7a7a\u683c\u3002\u6700\u5e38\u7528\u7684\u51fd\u6578\u662f LTRIM()<\/code> \u548c RTRIM()<\/code>\uff0c\u9019\u5169\u500b\u51fd\u6578\u5206\u5225\u7528\u65bc\u53bb\u9664\u5b57\u7b26\u4e32\u5de6\u5074\u548c\u53f3\u5074\u7684\u7a7a\u683c\u3002\u6b64\u5916\uff0c\u5f9eSQL Server 2017\u958b\u59cb\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528 TRIM()<\/code> \u51fd\u6578\u4f86\u540c\u6642\u53bb\u9664\u5b57\u7b26\u4e32\u5169\u5074\u7684\u7a7a\u683c\u3002<\/p>\n

\u4f7f\u7528LTRIM\u548cRTRIM<\/h3>\n
SELECT LTRIM(RTRIM(column_name)) AS CleanedColumn\nFROM table_name;<\/code><\/pre>\n
\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0ccolumn_name<\/code> \u662f\u9700\u8981\u53bb\u9664\u7a7a\u683c\u7684\u5217\u540d\uff0ctable_name<\/code> \u662f\u6578\u64da\u8868\u7684\u540d\u7a31\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u67e5\u8a62\u7d50\u679c\u4e2d\uff0c\u6240\u6709\u7684\u591a\u9918\u7a7a\u683c\u90fd\u88ab\u53bb\u9664\u3002<\/p>\n
\u4f7f\u7528TRIM<\/h3>\n
SELECT TRIM(column_name) AS CleanedColumn\nFROM table_name;<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u4f7f\u7528\u4e86 TRIM()<\/code> \u51fd\u6578\uff0c\u80fd\u5920\u66f4\u7c21\u55ae\u5730\u53bb\u9664\u5b57\u7b26\u4e32\u5169\u5074\u7684\u7a7a\u683c\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u3002<\/p>\n
\u91cd\u65b0\u6392\u5217\u6578\u64da<\/h2>\n
\u5728\u53bb\u9664\u591a\u9918\u7a7a\u683c\u5f8c\uff0c\u53ef\u80fd\u9084\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u91cd\u65b0\u6392\u5217\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 ORDER BY<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
SELECT TRIM(column_name) AS CleanedColumn\nFROM table_name\nORDER BY CleanedColumn ASC;<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u4e0d\u50c5\u53bb\u9664\u4e86\u7a7a\u683c\uff0c\u9084\u6309\u7167\u6e05\u7406\u5f8c\u7684\u5217\u9032\u884c\u4e86\u5347\u5e8f\u6392\u5217\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u7684\u6574\u6f54\u6027\u548c\u53ef\u8b80\u6027\u3002<\/p>\n
\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n
\u5047\u8a2d\u6709\u4e00\u500b\u540d\u70ba Customers<\/code> \u7684\u8868\uff0c\u5176\u4e2d\u6709\u4e00\u5217 Name<\/code>\uff0c\u8a72\u5217\u7684\u6578\u64da\u53ef\u80fd\u5305\u542b\u591a\u9918\u7684\u7a7a\u683c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6e05\u7406\u6578\u64da\u4e26\u91cd\u65b0\u6392\u5217\uff1a<\/p>\n
SELECT TRIM(Name) AS CleanedName\nFROM Customers\nORDER BY CleanedName ASC;<\/code><\/pre>\n
\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u4e00\u500b\u6574\u6f54\u7684\u5ba2\u6236\u540d\u7a31\u5217\u8868\uff0c\u4e26\u6309\u7167\u5b57\u6bcd\u9806\u5e8f\u6392\u5217\uff0c\u65b9\u4fbf\u5f8c\u7e8c\u7684\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u751f\u6210\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728MSSQL\u4e2d\uff0c\u53bb\u9664\u591a\u9918\u7a7a\u683c\u548c\u91cd\u65b0\u6392\u5217\u6578\u64da\u662f\u78ba\u4fdd\u6578\u64da\u8cea\u91cf\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528 LTRIM()<\/code>\u3001RTRIM()<\/code> \u548c TRIM()<\/code> \u51fd\u6578\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u8f15\u9b06\u5730\u6e05\u7406\u6578\u64da\uff0c\u4e26\u4f7f\u7528 ORDER BY<\/code> \u5b50\u53e5\u9032\u884c\u6392\u5e8f\u3002\u9019\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u5920\u63d0\u5347\u67e5\u8a62\u7684\u6e96\u78ba\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u7ba1\u7406\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u512a\u5316\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728MSSQL\u4e2d\u53bb\u9664\u591a\u9918\u7a7a\u683c\u4e26\u91cd\u65b0\u6392\u5217\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u6574\u6f54\u5ea6\u8207\u67e5\u8a62\u6548\u7387\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-64829","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64829","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=64829"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64829\/revisions"}],"predecessor-version":[{"id":64830,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64829\/revisions\/64830"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64829"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64829"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}