{"id":1061,"date":"2018-11-27T18:57:17","date_gmt":"2018-11-27T10:57:17","guid":{"rendered":"http:\/\/www.ily22.com\/?p=1061"},"modified":"2018-11-27T18:57:17","modified_gmt":"2018-11-27T10:57:17","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e7%ac%ac%e4%b8%80%e5%8f%a5%ef%bc%9aselect","status":"publish","type":"post","link":"https:\/\/www.geek2.xyz\/?p=1061","title":{"rendered":"MySQL\u6570\u636e\u5e93\u7b2c\u4e00\u53e5\uff1aSELECT"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1062 size-full\" src=\"http:\/\/www.geek2.xyz\/wp-content\/uploads\/2018\/11\/66931453.jpg\" alt=\"\" width=\"500\" height=\"365\" \/><\/p>\n<p>\u60f3\u5fc5\u5927\u5bb6\u5b66\u4e60MySQL\u65f6\uff0c\u7b2c\u4e00\u4e2a\u8bed\u53e5\u5c31\u662fSELECT\u5427\uff0c\u5b83\u4e3b\u8981\u7528\u4e8e\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u68c0\u7d22\u4fe1\u606f\u3002<br \/>\n\u4f7f\u7528SELECT \u65f6\uff0c\u81f3\u5c11\u5217\u51fa\u4e24\u6761\u4fe1\u606f\uff0c\u6bd4\u5982\u4f60\u8981\u68c0\u7d22\u4ec0\u4e48\u6570\u636e\uff0c\u4ece\u4ec0\u4e48\u5730\u65b9\u68c0\u7d22\u3002\u6bd4\u5982\uff1a<br \/>\n<code>SELECT test_name<br \/>\nFROM products;<\/code><br \/>\n\u4e0a\u9762\u662f\u5229\u7528SELECT \u8bed\u53e5\u4eceproducts \u8868\u4e2d\u68c0\u7d22\u4e00\u4e2a\u540d\u4e3add_name\u7684\u5217\uff0c\u5982\u679c\u5f00\u59cb\u4e0d\u592a\u6e05\u695a\u7684\u670b\u53cb\u4f1a\u95ee\u4e3a\u4ec0\u4e48\u6709\u7684\u5927\u5199\u6709\u7684\u5c0f\u5199\uff0c\u5176\u5b9eSQL\u8bed\u53e5\u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff0c\u56e0\u6b64SELECT\u4e0eselect\u662f\u76f8\u540c\u7684\uff0c\u4e3a\u4e86\u65b9\u4fbf\u8fa8\u8bc6\u548c\u4f7f\u7528SQL\u5173\u952e\u5b57\uff0c\u901a\u5e38\u90fd\u662f\u4f7f\u7528\u5927\u5199\uff0c\u800c\u5bf9\u6240\u6709\u5217\u548c\u8868\u540d\u4f7f\u7528\u5c0f\u5199\u3002<\/p>\n<p>\u5728\u5904\u7406SQL\u8bed\u53e5\u65f6\uff0c\u7a7a\u683c\u662f\u53ef\u4ee5\u5ffd\u7565\u7684\uff0c\u6240\u4ee5\u4f60\u4f1a\u770b\u5230\u5f88\u591a\u4eba\u7684SQL\u8bed\u603b\u662f\u4e0a\u4e00\u884c\u4e0b\u4e00\u884c\u4e5f\u4e0d\u89c4\u5219\uff0c\u5176\u5b9e\u8fd9\u5c31\u662f\u5ffd\u7565\u7a7a\u683c\u540e\uff0c\u6839\u636e\u81ea\u5df1\u7684\u559c\u597d\u8c03\u6574\u4e0b\u6392\u7248\u4f1a\u66f4\u5bb9\u6613\u76f4\u89c2\u7684\u9605\u8bfb\u3002<\/p>\n<p>\u4e0a\u9762\u8bf4\u7684SELECT\u8bed\u53e5\u8fd8\u80fd\u591f\u68c0\u7d22\u591a\u4e2a\u5217\uff0c\u7528\u6cd5\u4e00\u6837\uff0c\u5c31\u662f\u5728\u5217\u540d\u4e4b\u95f4\u5fc5\u987b\u4ee5\u9017\u53f7\u5206\u9694\uff08\u6700\u540e\u4e00\u4e2a\u5217\u540d\u540e\u4e0d\u7528\u52a0\uff09\u3002\u7528\u6cd5\u5982\u4e0b\uff1a<br \/>\n<code>SELECT test_id, test_name, test_price<br \/>\nFROM products;<\/code><br \/>\n\u8fd9\u6837SELECT \u8bed\u53e5\u5c31\u4eceproducts\u8868\u4e2d\u68c0\u7d22\u4e863\u5217\u540d<\/p>\n<p>\u9664\u6b64\u4e4b\u5916\uff0cSELECT\u4e5f\u80fd\u68c0\u7d22\u6240\u6709\u5217\uff0c\u7528\u7528\u661f\u53f7\uff08* \uff09\u901a\u914d\u7b26\u6765\u4ee3\u8868\u6240\u6709\u7684\u5217\u3002\u6bd4\u5982\uff1a<br \/>\n<code>SELECT *<br \/>\nFROM products;<\/code><br \/>\n\u5c31\u53ef\u4ee5\u5217\u51faproducts\u8868\u4e2d\u6240\u6709\u7684\u5217\u3002\u5176\u5b9eSELECT\u7684\u7528\u6cd5\u8fd8\u6709\u5f88\u591a\uff0c\u8fd9\u91cc\u5c31\u4e0d\u4e00\u4e00\u4e3e\u4f8b\u4e86\uff0c\u53ea\u662f\u521d\u7565\u7684\u4ecb\u7ecd\u4e0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60f3\u5fc5\u5927\u5bb6\u5b66\u4e60MySQL\u65f6\uff0c\u7b2c\u4e00\u4e2a\u8bed\u53e5\u5c31\u662fSELECT\u5427\uff0c\u5b83\u4e3b\u8981\u7528\u4e8e\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u68c0\u7d22\u4fe1\u606f\u3002 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[25,62],"class_list":["post-1061","post","type-post","status-publish","format-standard","hentry","category-jsfx","tag-mysql","tag-62"],"_links":{"self":[{"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=\/wp\/v2\/posts\/1061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1061"}],"version-history":[{"count":0,"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=\/wp\/v2\/posts\/1061\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.geek2.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}