{"id":200623,"date":"2025-05-06T12:44:43","date_gmt":"2025-05-06T04:44:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200623\/"},"modified":"2025-05-06T12:44:43","modified_gmt":"2025-05-06T04:44:43","slug":"mysql-%e7%bb%84%e5%90%88%e7%b4%a2%e5%bc%95%e4%b8%ba%e4%bd%95%e5%a4%b1%e6%95%88%ef%bc%9fselect-%e6%9f%a5%e8%af%a2%e4%b8%ba%e4%bd%95%e4%bc%9a%e9%98%bb%e7%a2%8d%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200623\/","title":{"rendered":"MySQL \u7ec4\u5408\u7d22\u5f15\u4e3a\u4f55\u5931\u6548\uff1f\u201cSELECT *\u201d \u67e5\u8be2\u4e3a\u4f55\u4f1a\u963b\u788d\u7d22\u5f15\u7684\u4f7f\u7528\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u7ec4\u5408\u7d22\u5f15\u4e3a\u4f55\u5931\u6548\uff1f\u201cSELECT *\u201d \u67e5\u8be2\u4e3a\u4f55\u4f1a\u963b\u788d\u7d22\u5f15\u7684\u4f7f\u7528\uff1f<\/h1>\n<p>\u6570\u636e\u5e93\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aMySQL \u7ec4\u5408\u7d22\u5f15\u4e3a\u4f55\u5931\u6548\uff1f\u201cSELECT *\u201d \u67e5\u8be2\u4e3a\u4f55\u4f1a\u963b\u788d\u7d22\u5f15\u7684\u4f7f\u7528\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241110\/1731201510673009e6c3c84.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>MySQL \u7ec4\u5408\u7d22\u5f15\u672a\u751f\u6548\u7684\u5206\u6790<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n<p>\u5bf9\u4e8e\u62e5\u6709\u4e3b\u952e A \u548c\u7ec4\u5408\u7d22\u5f15 B\u3001C \u7684\u8868\uff0c\u4e3a\u4ec0\u4e48 MySQL \u65e0\u6cd5\u5728\u67e5\u8be2\u8bed\u53e5 &#8220;SELECT * FROM Table where B=1 and C = 2&#8221; \u4e2d\u4f7f\u7528\u8be5\u7ec4\u5408\u7d22\u5f15\uff1f<\/p>\n<p><strong>\u5206\u6790\uff1a<\/strong><\/p>\n<p>\u867d\u7136 GPT \u58f0\u79f0\u8be5\u67e5\u8be2\u53ef\u4ee5\u4f7f\u7528\u7ec4\u5408\u7d22\u5f15\uff0c\u4f46\u5b9e\u9645\u60c5\u51b5\u5e76\u975e\u5982\u6b64\u3002explain \u5206\u6790\u663e\u793a\uff0c\u8be5\u67e5\u8be2\u6ca1\u6709\u8d70\u7d22\u5f15\uff0c\u800c\u662f\u8fdb\u884c\u4e86\u5168\u8868\u626b\u63cf\u3002\u8fd9\u662f\u56e0\u4e3a\uff1a<\/p>\n<p><strong>select * \u67e5\u8be2\u5bfc\u81f4\u7d22\u5f15\u65e0\u6548<\/strong><\/p>\n<p>\u6267\u884c &#8220;SELECT *&#8221; \u67e5\u8be2\u65f6\uff0cMySQL \u5c06\u8fd4\u56de\u8868\u4e2d\u7684\u6240\u6709\u5217\u3002\u8fd9\u5bfc\u81f4\u4e86\u5bf9\u7d22\u5f15\u7684\u56de\u8868\u64cd\u4f5c\uff0c\u56e0\u4e3a\u7d22\u5f15\u7ed3\u6784\u4e2d\u4e0d\u5305\u542b\u8be5\u67e5\u8be2\u6240\u9700\u7684\u6240\u6709\u6570\u636e\u3002\u56de\u8868\u64cd\u4f5c\u4f1a\u964d\u4f4e\u67e5\u8be2\u6027\u80fd\uff0c\u5e76\u963b\u6b62\u7ec4\u5408\u7d22\u5f15\u88ab\u6709\u6548\u5229\u7528\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p>\u8981\u4f7f\u7ec4\u5408\u7d22\u5f15\u751f\u6548\uff0c\u9700\u8981\u4fee\u6539\u67e5\u8be2\u4ee5\u4ec5\u9009\u62e9\u5fc5\u8981\u7684\u5217\u3002\u4f8b\u5982\uff0c\u66f4\u6539\u4e3a &#8220;SELECT B, C FROM Table where B=1 and C = 2&#8221; \u53ef\u4ee5\u4f7f MySQL \u4f7f\u7528\u7ec4\u5408\u7d22\u5f15\u6765\u5feb\u901f\u83b7\u53d6\u6240\u9700\u6570\u636e\uff0c\u907f\u514d\u56de\u8868\u64cd\u4f5c\u3002<\/p>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aMySQL \u7ec4\u5408\u7d22\u5f15\u4e3a\u4f55\u5931\u6548\uff1f\u201cSELECT *\u201d \u67e5\u8be2\u4e3a\u4f55\u4f1a\u963b\u788d\u7d22\u5f15\u7684\u4f7f\u7528\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u7ec4\u5408\u7d22\u5f15\u4e3a\u4f55\u5931\u6548\uff1f\u201c&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200623","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200623","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200623"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200623\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}