{"id":138449,"date":"2024-10-31T14:34:16","date_gmt":"2024-10-31T06:34:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138449\/"},"modified":"2024-10-31T14:34:17","modified_gmt":"2024-10-31T06:34:17","slug":"sql-server%e6%9f%a5%e8%a9%a2%e4%b8%ad%e7%89%b9%e6%ae%8a%e5%ad%97%e7%ac%a6%e7%9a%84%e8%99%95%e7%90%86%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138449\/","title":{"rendered":"SQL Server\u67e5\u8a62\u4e2d\u7279\u6b8a\u5b57\u7b26\u7684\u8655\u7406\u65b9\u6cd5"},"content":{"rendered":"

SQL Server\u67e5\u8a62\u4e2d\u7279\u6b8a\u5b57\u7b26\u7684\u8655\u7406\u65b9\u6cd5<\/h1>\n

\u5728\u4f7f\u7528SQL Server\u9032\u884c\u6578\u64da\u67e5\u8a62\u6642\uff0c\u7279\u6b8a\u5b57\u7b26\u7684\u8655\u7406\u662f\u4e00\u500b\u5e38\u898b\u7684\u6311\u6230\u3002\u7279\u6b8a\u5b57\u7b26\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u6b63\u78ba\u6027\uff0c\u751a\u81f3\u5c0e\u81f4\u932f\u8aa4\u7684\u7d50\u679c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728SQL Server\u4e2d\u8655\u7406\u7279\u6b8a\u5b57\u7b26\u7684\u5e7e\u7a2e\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u9032\u884c\u6578\u64da\u67e5\u8a62\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u7279\u6b8a\u5b57\u7b26\uff1f<\/h2>\n

\u7279\u6b8a\u5b57\u7b26\u662f\u6307\u5728SQL\u67e5\u8a62\u4e2d\u5177\u6709\u7279\u5b9a\u610f\u7fa9\u7684\u5b57\u7b26\uff0c\u4f8b\u5982\u55ae\u5f15\u865f\uff08’\uff09\u3001\u96d9\u5f15\u865f\uff08”\uff09\u3001\u767e\u5206\u865f\uff08%\uff09\u3001\u4e0b\u5283\u7dda\uff08_\uff09\u7b49\u3002\u9019\u4e9b\u5b57\u7b26\u5728\u67e5\u8a62\u4e2d\u53ef\u80fd\u6703\u88ab\u89e3\u91cb\u70ba\u64cd\u4f5c\u7b26\u6216\u901a\u914d\u7b26\uff0c\u5f9e\u800c\u5f71\u97ff\u67e5\u8a62\u7684\u7d50\u679c\u3002<\/p>\n

\u8655\u7406\u7279\u6b8a\u5b57\u7b26\u7684\u65b9\u6cd5<\/h2>\n

1. \u4f7f\u7528\u8f49\u7fa9\u5b57\u7b26<\/h3>\n

\u5728SQL Server\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u865f\uff08[]\uff09\u4f86\u8f49\u7fa9\u7279\u6b8a\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u67e5\u8a62\u5305\u542b\u55ae\u5f15\u865f\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n

SELECT * FROM Users WHERE Name = 'O''Reilly'<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u55ae\u5f15\u865f\u88ab\u8f49\u7fa9\u70ba\u5169\u500b\u55ae\u5f15\u865f\uff0c\u9019\u6a23SQL Server\u5c31\u80fd\u6b63\u78ba\u8b58\u5225\u5b83\u3002<\/p>\n
2. \u4f7f\u7528LIKE\u904b\u7b97\u7b26<\/h3>\n
\u7576\u4f7f\u7528LIKE\u904b\u7b97\u7b26\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u6642\uff0c\u767e\u5206\u865f\uff08%\uff09\u548c\u4e0b\u5283\u7dda\uff08_\uff09\u662f\u901a\u914d\u7b26\u3002\u5982\u679c\u8981\u67e5\u8a62\u5305\u542b\u9019\u4e9b\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u865f\u4f86\u8f49\u7fa9\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT * FROM Products WHERE ProductName LIKE '%[_%]'<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u7522\u54c1\u540d\u7a31\u4e2d\u5305\u542b\u4e0b\u5283\u7dda\u7684\u8a18\u9304\u3002<\/p>\n
3. \u4f7f\u7528QUOTENAME\u51fd\u6578<\/h3>\n
QUOTENAME\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u5b89\u5168\u5730\u8655\u7406\u7279\u6b8a\u5b57\u7b26\uff0c\u7279\u5225\u662f\u5728\u52d5\u614bSQL\u4e2d\u3002\u9019\u500b\u51fd\u6578\u6703\u5c07\u5b57\u7b26\u4e32\u5305\u88f9\u5728\u65b9\u62ec\u865f\u4e2d\uff0c\u5f9e\u800c\u907f\u514d\u7279\u6b8a\u5b57\u7b26\u7684\u5f71\u97ff\u3002\u4f8b\u5982\uff1a<\/p>\n
DECLARE @TableName NVARCHAR(128) = 'MyTable'\nEXEC('SELECT * FROM ' + QUOTENAME(@TableName))<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5373\u4f7f\u8868\u540d\u4e2d\u5305\u542b\u7279\u6b8a\u5b57\u7b26\uff0c\u67e5\u8a62\u4e5f\u80fd\u6b63\u5e38\u57f7\u884c\u3002<\/p>\n
4. \u4f7f\u7528CHAR\u51fd\u6578<\/h3>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u7279\u6b8a\u5b57\u7b26\u7684ASCII\u78bc\u53ef\u4ee5\u7528CHAR\u51fd\u6578\u4f86\u8868\u793a\u3002\u4f8b\u5982\uff0c\u55ae\u5f15\u865f\u7684ASCII\u78bc\u662f39\uff0c\u53ef\u4ee5\u9019\u6a23\u4f7f\u7528\uff1a<\/p>\n
SELECT * FROM Users WHERE Name = CHAR(79) + CHAR(39) + 'Reilly'<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u76f4\u63a5\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7279\u6b8a\u5b57\u7b26\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728SQL Server\u4e2d\u8655\u7406\u7279\u6b8a\u5b57\u7b26\u662f\u78ba\u4fdd\u67e5\u8a62\u6b63\u78ba\u6027\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528\u8f49\u7fa9\u5b57\u7b26\u3001LIKE\u904b\u7b97\u7b26\u3001QUOTENAME\u51fd\u6578\u548cCHAR\u51fd\u6578\u7b49\u65b9\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u56e0\u7279\u6b8a\u5b57\u7b26\u5f15\u8d77\u7684\u554f\u984c\u3002\u9019\u4e9b\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u67e5\u8a62\u7684\u6e96\u78ba\u6027\uff0c\u9084\u80fd\u589e\u5f37\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5728SQL Server\u67e5\u8a62\u4e2d\u5982\u4f55\u8655\u7406\u7279\u6b8a\u5b57\u7b26\uff0c\u78ba\u4fdd\u6578\u64da\u6e96\u78ba\u6027\u548c\u67e5\u8a62\u6548\u7387\uff0c\u907f\u514d\u5e38\u898b\u932f\u8aa4\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-138449","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138449","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=138449"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138449\/revisions"}],"predecessor-version":[{"id":138450,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138449\/revisions\/138450"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}