{"id":1170,"date":"2024-08-24T11:16:27","date_gmt":"2024-08-24T03:16:27","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=1170"},"modified":"2024-08-24T11:16:28","modified_gmt":"2024-08-24T03:16:28","slug":"mysql%e7%b4%a2%e5%bc%95%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=1170","title":{"rendered":"MySQL\u7d22\u5f15\u6ce8\u610f\u4e8b\u9879"},"content":{"rendered":"\n<p>\u8bbe\u8ba1MySql\u7d22\u5f15\u7684\u65f6\u5019\u6709\u4e00\u4e0b\u51e0\u70b9\u6ce8\u610f\uff1a<\/p>\n\n\n\n<p><strong>1\uff0c\u521b\u5efa\u7d22\u5f15<\/strong><\/p>\n\n\n\n<p>\u5bf9\u4e8e\u67e5\u8be2\u5360\u4e3b\u8981\u7684\u5e94\u7528\u6765\u8bf4\uff0c\u7d22\u5f15\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002\u5f88\u591a\u65f6\u5019\u6027\u80fd\u95ee\u9898\u5f88\u7b80\u5355\u7684\u5c31\u662f\u56e0\u4e3a\u6211\u4eec\u5fd8\u4e86\u6dfb\u52a0\u7d22\u5f15\u800c\u9020\u6210\u7684\uff0c\u6216\u8005\u8bf4\u6ca1\u6709\u6dfb\u52a0\u66f4\u4e3a\u6709\u6548\u7684\u7d22\u5f15\u5bfc\u81f4\u3002\u5982\u679c\u4e0d\u52a0<\/p>\n\n\n\n<p>\u7d22\u5f15\u7684\u8bdd\uff0c\u90a3\u4e48\u67e5\u627e\u4efb\u4f55\u54ea\u6015\u53ea\u662f\u4e00\u6761\u7279\u5b9a\u7684\u6570\u636e\u90fd\u4f1a\u8fdb\u884c\u4e00\u6b21\u5168\u8868\u626b\u63cf\uff0c\u5982\u679c\u4e00\u5f20\u8868\u7684\u6570\u636e\u91cf\u5f88\u5927\u800c\u7b26\u5408\u6761\u4ef6\u7684\u7ed3\u679c\u53c8\u5f88\u5c11\uff0c\u90a3\u4e48\u4e0d\u52a0\u7d22\u5f15\u4f1a\u5f15\u8d77\u81f4\u547d\u7684\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u4e5f\u4e0d\u662f\u4ec0\u4e48\u60c5\u51b5\u90fd\u975e\u5f97\u5efa\u7d22\u5f15\u4e0d\u53ef\uff0c\u6bd4\u5982\u6027\u522b\u53ef\u80fd\u5c31<strong>\u53ea\u6709\u4e24\u4e2a\u503c<\/strong>\uff0c\u5efa\u7d22\u5f15\u4e0d\u4ec5\u6ca1\u4ec0\u4e48\u4f18\u52bf\uff0c\u8fd8\u4f1a\u5f71\u54cd\u5230\u66f4\u65b0\u901f\u5ea6\uff0c\u8fd9\u88ab\u79f0\u4e3a<strong>\u8fc7\u5ea6<\/strong>\u7d22\u5f15\u3002<\/p>\n\n\n\n<p><strong>2\uff0c\u590d\u5408\u7d22\u5f15<\/strong><\/p>\n\n\n\n<p>\u6bd4\u5982\u6709\u4e00\u6761\u8bed\u53e5\u662f\u8fd9\u6837\u7684\uff1aselect * from users where area=\u2019beijing\u2019 and age=22;<\/p>\n\n\n\n<p>\u5982\u679c\u6211\u4eec\u662f\u5728area\u548cage\u4e0a<strong>\u5206\u522b\u521b\u5efa<\/strong>\u5355\u4e2a\u7d22\u5f15\u7684\u8bdd\uff0c\u7531\u4e8emysql\u67e5\u8be2\u6bcf\u6b21\u53ea\u80fd\u4f7f\u7528<strong>\u4e00\u4e2a\u7d22\u5f15<\/strong>\uff0c\u6240\u4ee5\u867d\u7136\u8fd9\u6837\u5df2\u7ecf\u76f8\u5bf9\u4e0d\u505a\u7d22\u5f15\u65f6\u5168\u8868\u626b\u63cf\u63d0\u9ad8\u4e86\u5f88\u591a\u6548<\/p>\n\n\n\n<p>\u7387\uff0c\u4f46\u662f\u5982\u679c\u5728area\u3001age\u4e24\u5217\u4e0a\u521b\u5efa\u590d\u5408\u7d22\u5f15\u7684\u8bdd\u5c06\u5e26\u6765\u66f4\u9ad8\u7684\u6548\u7387\u3002\u5982\u679c\u6211\u4eec\u521b\u5efa\u4e86(area, 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by\u4e2d\u7684\u5217\u662f\u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15\u7684\u3002\u56e0\u6b64\u6570\u636e\u5e93\u9ed8\u8ba4\u6392\u5e8f\u53ef\u4ee5\u7b26\u5408\u8981\u6c42\u7684\u60c5\u51b5\u4e0b\u4e0d\u8981\u4f7f\u7528\u6392\u5e8f\u64cd\u4f5c\uff1b\u5c3d\u91cf\u4e0d\u8981\u5305\u542b<strong>\u591a\u4e2a\u5217\u7684\u6392\u5e8f<\/strong>\uff0c\u5982\u679c\u9700\u8981\u6700\u597d\u7ed9\u8fd9\u4e9b\u5217\u521b\u5efa<strong>\u590d\u5408\u7d22\u5f15<\/strong>\u3002<\/p>\n\n\n\n<p><strong>6\uff0clike\u8bed\u53e5\u64cd\u4f5c<\/strong><\/p>\n\n\n\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b\u4e0d\u9f13\u52b1\u4f7f\u7528like\u64cd\u4f5c\uff0c\u5982\u679c\u975e\u4f7f\u7528\u4e0d\u53ef\uff0c\u5982\u4f55\u4f7f\u7528\u4e5f\u662f\u4e00\u4e2a\u95ee\u9898\u3002like \u201c%aaa%\u201d \u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15\u800c<strong>like \u201c<\/strong><strong>aaa<\/strong><strong>%\u201d<\/strong>\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u3002<\/p>\n\n\n\n<p><strong>7\uff0c\u4e0d\u8981\u5728\u5217\u4e0a\u8fdb\u884c\u8fd0\u7b97<\/strong><\/p>\n\n\n\n<p>select * from users where<\/p>\n\n\n\n<p>YEAR(adddate)<\/p>\n\n\n\n<p><strong>8\uff0c\u4e0d\u4f7f\u7528NOT IN<\/strong><\/p>\n\n\n\n<p>NOT IN\u90fd\u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15\u5c06\u8fdb\u884c\u5168\u8868\u626b\u63cf\u3002NOT IN\u53ef\u4ee5<strong>NOT EXISTS\u4ee3\u66ff<\/strong>\u3002<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bbe\u8ba1MySql\u7d22\u5f15\u7684\u65f6\u5019\u6709\u4e00\u4e0b\u51e0\u70b9\u6ce8\u610f\uff1a 1\uff0c\u521b\u5efa\u7d22\u5f15 \u5bf9\u4e8e\u67e5\u8be2\u5360\u4e3b\u8981\u7684\u5e94\u7528\u6765\u8bf4\uff0c\u7d22\u5f15\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002\u5f88\u591a\u65f6\u5019\u6027 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63],"tags":[365,911],"class_list":["post-1170","post","type-post","status-publish","format-standard","hentry","category-63","tag-mysql","tag-911"],"views":706,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1170"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1170\/revisions"}],"predecessor-version":[{"id":1171,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1170\/revisions\/1171"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1170"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}