{"id":689,"date":"2011-01-28T10:21:54","date_gmt":"2011-01-28T02:21:54","guid":{"rendered":""},"modified":"2014-03-11T22:36:58","modified_gmt":"2014-03-11T14:36:58","slug":"sql%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"http:\/\/www.xiaoyebailong.com\/index.php\/2011\/01\/28\/689.htm","title":{"rendered":"SQL\u6a21\u7cca\u67e5\u8be2"},"content":{"rendered":"

select column FROM table where column like ‘pattern’\u3002<\/p>\n

SQL\u63d0\u4f9b\u4e86\u56db\u79cd\u5339\u914d\u6a21\u5f0f\uff1a
\n1. % \u8868\u793a\u4efb\u610f0\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u5982\u4e0b\u8bed\u53e5\uff1a
\nselect * FROM user where name like ‘%\u4e09%’
\n\u5c06\u4f1a\u628aname\u4e3a"\u5f20\u4e09"\uff0c"\u4e09\u811a\u732b"\uff0c"\u5510\u4e09\u85cf"\u7b49\u7b49\u6709"\u4e09"\u7684\u5168\u627e\u51fa\u6765\uff1b<\/p>\n

2. _ \u8868\u793a\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\u3002\u8bed\u53e5\uff1a
\nselect * FROM user where name like ‘_\u4e09_’
\n\u53ea\u627e\u51fa"\u5510\u4e09\u85cf"\u8fd9\u6837name\u4e3a\u4e09\u4e2a\u5b57\u4e14\u4e2d\u95f4\u4e00\u4e2a\u5b57\u662f"\u4e09"\u7684\uff1b
\nselect * FROM user where name like ‘\u4e09__’
\n\u53ea\u627e\u51fa"\u4e09\u811a\u732b"\u8fd9\u6837name\u4e3a\u4e09\u4e2a\u5b57\u4e14\u7b2c\u4e00\u4e2a\u5b57\u662f"\u4e09"\u7684\uff1b<\/p>\n

3. [ ] \u8868\u793a\u62ec\u53f7\u5185\u6240\u5217\u5b57\u7b26\u4e2d\u7684\u4e00\u4e2a\uff08\u7c7b\u4f3c\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\uff09\u3002\u8bed\u53e5\uff1a
\nselect * FROM user where name like ‘[\u5f20\u674e\u738b]\u4e09’
\n\u5c06\u627e\u51fa"\u5f20\u4e09"\u3001"\u674e\u4e09"\u3001"\u738b\u4e09"\uff08\u800c\u4e0d\u662f"\u5f20\u674e\u738b\u4e09"\uff09\uff1b<\/p>\n

\u5982 [ ] \u5185\u6709\u4e00\u7cfb\u5217\u5b57\u7b26\uff0801234\u3001abcde\u4e4b\u7c7b\u7684\uff09\u5219\u53ef\u7565\u5199\u4e3a"0-4"\u3001"a-e"
\nselect * FROM user where name like ‘\u8001[1-9]’
\n\u5c06\u627e\u51fa"\u80011"\u3001"\u80012"\u3001……\u3001"\u80019"\uff1b
\n\u5982\u8981\u627e"-"\u5b57\u7b26\u8bf7\u5c06\u5176\u653e\u5728\u9996\u4f4d\uff1a’\u5f20\u4e09[-1-9]’<\/p>\n

4. [^ ] \u8868\u793a\u4e0d\u5728\u62ec\u53f7\u6240\u5217\u4e4b\u5185\u7684\u5355\u4e2a\u5b57\u7b26\u3002\u8bed\u53e5\uff1a
\nselect * FROM user where name like ‘[^\u5f20\u674e\u738b]\u4e09’
\n\u5c06\u627e\u51fa\u4e0d\u59d3"\u5f20"\u3001"\u674e"\u3001"\u738b"\u7684"\u8d75\u4e09"\u3001"\u5b59\u4e09"\u7b49\uff1b
\nselect * FROM user where name like ‘\u8001[^1-4]’
\n\u5c06\u6392\u9664"\u80011"\u5230"\u80014"\u5bfb\u627e"\u80015"\u3001"\u80016"\u3001……\u3001"\u80019"\u3002<\/p>\n

\uff01\u6700\u540e\u662f\u91cd\u70b9\uff01
\n\u7531\u4e8e\u901a\u914d\u7b26\u7684\u7f18\u6545\uff0c\u5bfc\u81f4\u6211\u4eec\u67e5\u8be2\u7279\u6b8a\u5b57\u7b26"%"\u3001"_"\u3001"["\u3001"’"\u7684\u8bed\u53e5\u65e0\u6cd5\u6b63\u5e38\u5b9e\u73b0\uff0c\u800c\u628a\u7279\u6b8a\u5b57\u7b26\u7528"[ ]"\u62ec\u8d77\u4fbf\u53ef\u6b63\u5e38\u67e5\u8be2\u3002\u636e\u6b64\u6211\u4eec\u5199\u51fa\u4ee5\u4e0b\u51fd\u6570\uff1a<\/p>\n

function sqlencode(str)
\nstr=replace(str,"’","”")
\nstr=replace(str,"[","[[]") ‘;\u6b64\u53e5\u4e00\u5b9a\u8981\u5728\u6700\u5148
\nstr=replace(str,"_","[_]")
\nstr=replace(str,"%","[%]")
\nsqlencode=str
\nend function<\/p>\n

\u5728\u67e5\u8be2\u524d\u5c06\u5f85\u67e5\u5b57\u7b26\u4e32\u5148\u7ecf\u8be5\u51fd\u6570\u5904\u7406\u5373\u53ef\u3002
\n <\/p>\n","protected":false},"excerpt":{"rendered":"

select column FROM table where column like ‘pattern’\u3002 SQL\u63d0\u4f9b\u4e86\u56db\u79cd\u5339\u914d\u6a21\u5f0f\uff1a 1. % \u8868\u793a\u4efb\u610f0\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u5982\u4e0b\u8bed\u53e5\uff1a select * FROM use…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-689","post","type-post","status-publish","format-standard","hentry","category-technology"],"_links":{"self":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/comments?post=689"}],"version-history":[{"count":1,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/689\/revisions"}],"predecessor-version":[{"id":66553,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/689\/revisions\/66553"}],"wp:attachment":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/media?parent=689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/categories?post=689"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/tags?post=689"},{"taxonomy":"topic","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/topic?post=689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}