{"id":1627,"date":"2014-11-24T15:44:28","date_gmt":"2014-11-24T07:44:28","guid":{"rendered":"http:\/\/doophp.sinaapp.com\/?p=1627"},"modified":"2014-11-24T15:44:28","modified_gmt":"2014-11-24T07:44:28","slug":"mysql-case-censitive","status":"publish","type":"post","link":"https:\/\/blog.vimge.com\/archives\/mysql\/mysql-case-censitive.html","title":{"rendered":"MySQL\u67e5\u8be2\u5927\u5199\u5c0f\u654f\u611f\u95ee\u9898"},"content":{"rendered":"<p>\u5982\u679c\u4f60\u7684MySQL\u8868\u5b57\u7b26\u96c6\u521a\u597d\u88ab\u8bbe\u7f6e\u4e3axxx_ci\uff0c\u6bd4\u5982utf8_generic_ci\uff0c\u5982\u679c\u521a\u597d\u4f60\u505a\u4e86\u4e00\u4e2a\u5982\u4e0b\u67e5\u8be2\uff0c\u5982\u679c\u521a\u597d\u4f60\u7684\u6570\u636e\u5e93\u91cc\u9762\u521a\u597d\u6709\u4ee5\u4e0b\u8fd9\u4e24\u6761\u8bb0\u5f55\uff0c\u5982\u679c\u4f60\u8db3\u591f\u7ec6\u5fc3\uff0c\u90a3\u4e48\u606d\u559c\u4f60\u5e94\u8be5\u53d1\u73b0\u51fa\u4e4e\u610f\u6599\u7684\u7ed3\u679c\u3002<\/p>\n<p>table user<br \/>\nid \u00a0 \u00a0 \u00a0 name<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a0 hello<br \/>\n2 \u00a0 \u00a0 \u00a0 \u00a0HELLO<\/p>\n<p>SQL<br \/>\nselect * from user where name=&#8221;hello&#8221;<\/p>\n<p>\u7ed3\u679c\u96c6<\/p>\n<p>id \u00a0 \u00a0 \u00a0 name<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a0 hello<br \/>\n2 \u00a0 \u00a0 \u00a0 \u00a0HELLO<\/p>\n<p>\u96be\u9053\u4e0d\u5e94\u8be5\u662f\uff1f<\/p>\n<p>id \u00a0 \u00a0 \u00a0 name<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a0 hello<\/p>\n<p>\u539f\u6765MySQL\u67d0\u4e9b\u5b57\u7b26\u96c6\u4e0b\u9762\u9ed8\u8ba4\u662f\u4e0d\u533a\u5206\u67e5\u8be2\u5927\u5c0f\u5199\u7684\uff0c\u8fd9\u4e3b\u8981\u662f\u7531mysql\u7684\u5b57\u7b26\u6821\u9a8c\u89c4\u5219\u7684\u8bbe\u7f6e\u51b3\u5b9a\u7684\u3002<\/p>\n<p>\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\u5b57\u7b26\u6821\u9a8c\u89c4\u5219\u5427<\/p>\n<p>\u5b57\u7b26\u96c6\u662f\u4e00\u5957\u7b26\u53f7\u548c\u7f16\u7801,\u6821\u5bf9\u89c4\u5219\u662f\u5728\u5b57\u7b26\u96c6\u5185\u7528\u4e8e\u6bd4\u8f83\u5b57\u7b26\u7684\u4e00\u5957\u89c4\u5219\u3002\u4efb\u4f55\u4e00\u4e2a\u7ed9\u5b9a\u7684\u5b57\u7b26\u96c6\u81f3\u5c11\u6709\u4e00\u4e2a\u6821\u5bf9\u89c4\u5219\uff0c\u5b83\u53ef\u80fd\u6709\u51e0\u4e2a\u6821\u5bf9\u89c4\u5219\u3002<\/p>\n<pre>\u6821\u5bf9\u89c4\u5219\u4e00\u822c\u6709\u8fd9\u4e9b\u7279\u5f81\uff1a\r\n\u4e24\u4e2a\u4e0d\u540c\u7684\u5b57\u7b26\u96c6\u4e0d\u80fd\u6709\u76f8\u540c\u7684\u6821\u5bf9\u89c4\u5219\u3002\r\n\u6bcf\u4e2a\u5b57\u7b26\u96c6\u6709\u4e00\u4e2a\u9ed8\u8ba4\u6821\u5bf9\u89c4\u5219\u3002\u4f8b\u5982\uff0cutf8\u9ed8\u8ba4\u6821\u5bf9\u89c4\u5219\u662futf8_general_ci\u3002\r\n\u5b58\u5728\u6821\u5bf9\u89c4\u5219\u547d\u540d\u7ea6\u5b9a\uff1a\u5b83\u4eec\u4ee5\u5176\u76f8\u5173\u7684\u5b57\u7b26\u96c6\u540d\u5f00\u59cb\uff0c\u901a\u5e38\u5305\u62ec\u4e00\u4e2a\u8bed\u8a00\u540d\uff0c\u5e76\u4e14\u4ee5_ci\uff08\u5927\u5c0f\u5199\u4e0d\u654f\u611f\uff09\u3001_cs\uff08\u5927\u5c0f\u5199\u654f\u611f\uff09\u6216_bin\uff08\u4e8c\u5143\uff09\u7ed3\u675f\u3002<\/pre>\n<p>\u6240\u4ee5\u5bf9\u4e8e\u4e00\u4e9b\u6bd4\u8f83\u654f\u611f\u7684\u6570\u636e\uff0c\u5e94\u8be5\u5341\u5206\u6ce8\u610f\u5b57\u7b26\u96c6\u3002<\/p>\n<p><strong><em>\u901a\u5e38\u5bf9\u7ed3\u5c3e\u4e3a\u300e_cs\u300f\u7684\u5b57\u7b26\u96c6\u4e3a\u300e\u5927\u5c0f\u5199\u654f\u611f\u300f\u578b\uff0c\u6216\u8005\u4f7f\u7528\u300e_bin<strong><em>\u300f\u540e\u7eed\u5b57\u7b26\u96c6\uff0c\u5982utf8_bin<\/em><\/strong>.<\/em><\/strong><\/p>\n<p>\u90a3\u4e48\u5bf9\u4e8e\u5df2\u7ecf\u5b58\u5728\u7684\u5386\u53f2\u6570\u636e\u5e94\u8be5\u5982\u4f55\u5904\u7406\u5462\uff1f<\/p>\n<p>\u5176\u5b9e\u9488\u5bf9\u5df2\u7ecf\u8bbe\u7f6e\u4e3axxx_ci\u5b57\u7b26\u96c6\uff0c\u540c\u65f6\u53c8\u4e0d\u5f97\u4e0d\u5904\u7406\u5927\u5c0f\u5199\u654f\u611f\u95ee\u9898\u7684\u6570\u636e\u6211\u4eec\u9664\u4e86\u4fee\u6539\u5b57\u7b26\u96c6\u4ee5\u5916\u8fd8\u53ef\u4ee5\u4fee\u6539\u67e5\u8be2\u8bed\u53e5\u3002<\/p>\n<p>1.\u5728SQL\u8bed\u53e5\u4e2d\u4f7f\u7528collate:\uff1aselect * from user where name collate utf8_bin = &#8216;hello&#8217;;<\/p>\n<p>2.\u5728SQL\u8bed\u53e5\u4e2d\u4f7f\u7528binary\u64cd\u4f5c\u7b26\uff1aselect * from user where binary name = &#8216;hello&#8217;;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u4f60\u7684MySQL\u8868\u5b57\u7b26\u96c6\u521a\u597d\u88ab\u8bbe\u7f6e\u4e3axxx_ci\uff0c\u6bd4\u5982utf8_generic_ci\uff0c\u5982\u679c\u521a\u597d\u4f60\u505a\u4e86\u4e00\u4e2a\u5982\u4e0b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[132],"_links":{"self":[{"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/posts\/1627"}],"collection":[{"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/comments?post=1627"}],"version-history":[{"count":3,"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/posts\/1627\/revisions"}],"predecessor-version":[{"id":1630,"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/posts\/1627\/revisions\/1630"}],"wp:attachment":[{"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/media?parent=1627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/categories?post=1627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.vimge.com\/wp-json\/wp\/v2\/tags?post=1627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}