{"id":27288,"date":"2024-11-24T12:16:50","date_gmt":"2024-11-24T04:16:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/27288\/"},"modified":"2024-11-24T12:16:50","modified_gmt":"2024-11-24T04:16:50","slug":"%e6%b7%bb%e5%8a%a0-order-by-%e5%ad%90%e5%8f%a5%e4%b8%ba%e4%bd%95%e5%af%bc%e8%87%b4%e6%9f%a5%e8%af%a2%e9%80%9f%e5%ba%a6%e5%a4%a7%e5%b9%85%e4%b8%8b%e9%99%8d%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/27288\/","title":{"rendered":"\u6dfb\u52a0 ORDER BY \u5b50\u53e5\u4e3a\u4f55\u5bfc\u81f4\u67e5\u8be2\u901f\u5ea6\u5927\u5e45\u4e0b\u964d\uff1f"},"content":{"rendered":"

\"\u6dfb\u52a0<\/p>\n

\u6dfb\u52a0\u6392\u5e8f\u4e3a\u4f55\u5bfc\u81f4\u67e5\u8be2\u901f\u5ea6\u5927\u5e45\u4e0b\u964d\uff1f<\/strong><\/p>\n

\u95ee\u9898\u63cf\u8ff0\uff1a<\/strong><\/p>\n

\u67e5\u8be2rd_pro_inventory_temp\u8868\uff0c\u5982\u679c\u6dfb\u52a0ORDER BY t.CREATED_Date DESC\u5b50\u53e5\uff0c\u67e5\u8be2\u65f6\u95f4\u4ece2\u79d2\u589e\u52a0\u523015\u79d2\u3002\u7136\u800c\uff0c\u5355\u72ec\u67e5\u8be2rd_pro_inventory_temp\u8868\u65f6\uff0c\u52a0\u4e0d\u52a0ORDER BY\u5bf9\u67e5\u8be2\u901f\u5ea6\u5f71\u54cd\u4e0d\u5927\u3002<\/p>\n

\u539f\u56e0\u63a8\u6d4b\uff1a<\/strong><\/p>\n

\u7d22\u5f15\u5229\u7528\u4e0e\u6392\u5e8f\u6210\u672c\uff1a<\/strong><\/p>\n

\u6dfb\u52a0ORDER BY\u5b50\u53e5\u540e\uff0c\u5982\u679c\u8be5\u5b57\u6bb5\u4e0a\u6ca1\u6709\u5408\u9002\u7684\u7d22\u5f15\uff0cMySQL\u5c06\u8fdb\u884c\u6587\u4ef6\u6392\u5e8f\uff0c\u5373\u5bf9\u6574\u4e2a\u7ed3\u679c\u96c6\u8fdb\u884c\u7269\u7406\u6392\u5e8f\u3002\u8fd9\u6bd4\u4e0d\u6392\u5e8f\u65f6\u66f4\u8d39\u65f6\u3002<\/p>\n

JOIN\u7684\u5f71\u54cd\uff1a<\/strong><\/p>\n

\u67e5\u8be2\u6d89\u53card_pro_inventory_temp\u8868\u4e0e\u5b50\u67e5\u8be2\u7ed3\u679c\u7684LEFT JOIN\u3002JOIN\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5927\u5e45\u589e\u52a0\u7ed3\u679c\u96c6\uff0c\u4f7f\u5f97\u968f\u540e\u7684\u6392\u5e8f\u64cd\u4f5c\u66f4\u590d\u6742\u548c\u8017\u65f6\u3002<\/p>\n

\u7d22\u5f15\u5229\u7528\u7387\u5dee\u5f02\uff1a<\/strong><\/p>\n

\u5355\u72ec\u67e5\u8be2rd_pro_inventory_temp\u8868\u65f6\uff0c\u7531\u4e8e\u6570\u636e\u91cf\u5c0f\uff0c\u5373\u4fbfCREATED_Date\u5b57\u6bb5\u6ca1\u6709\u7d22\u5f15\uff0c\u6392\u5e8f\u4e5f\u80fd\u5feb\u901f\u5b8c\u6210\u3002\u7136\u800c\uff0c\u4e00\u65e6\u52a0\u5165JOIN\u548c\u5927\u7ed3\u679c\u96c6\uff0c\u65e0\u7d22\u5f15\u6392\u5e8f\u7684\u6210\u672c\u5c31\u4f1a\u663e\u73b0\u3002<\/p>\n

\u4f18\u5316\u5efa\u8bae\uff1a<\/strong><\/p>\n

\u7d22\u5f15\u4f18\u5316\uff1a<\/strong>\u786e\u4fddrd_pro_inventory_temp\u8868\u4e2d\u7684CREATED_Date\u5b57\u6bb5\u6709\u9002\u5f53\u7684\u7d22\u5f15\u3002<\/p>\n

JOIN\u4e0e\u5b50\u67e5\u8be2\u5206\u6790\uff1a<\/strong> \u68c0\u67e5JOIN\u5b50\u67e5\u8be2\u7684\u8f93\u51fa\u5927\u5c0f\uff0c\u4f18\u5316\u5b50\u67e5\u8be2\u903b\u8f91\u3002\u5982\u679c\u53ef\u80fd\uff0c\u5e94\u51cf\u5c11\u6216\u4f18\u5316GROUP_CONCAT\u51fd\u6570\uff0c\u4ee5\u51cf\u8f7b\u6570\u636e\u5904\u7406\u8d1f\u8f7d\u3002<\/p>\n

\u67e5\u8be2\u6267\u884c\u8ba1\u5212\u5206\u6790\uff1a<\/strong>\u4f7f\u7528EXPLAIN\u5de5\u5177\u5206\u6790\u67e5\u8be2\u6267\u884c\u8ba1\u5212\uff0c\u786e\u8ba4\u7d22\u5f15\u662f\u5426\u5f97\u5230\u6709\u6548\u4f7f\u7528\uff0c\u4ee5\u53ca\u6392\u5e8f\u9636\u6bb5\u7684\u5177\u4f53\u6267\u884c\u60c5\u51b5\u3002\u57fa\u4e8e\u6b64\uff0c\u8fdb\u884c\u6709\u9488\u5bf9\u6027\u7684\u4f18\u5316\u3002<\/p>\n

\u4ee5\u4e0a\u5c31\u662f\u6dfb\u52a0 ORDER BY \u5b50\u53e5\u4e3a\u4f55\u5bfc\u81f4\u67e5\u8be2\u901f\u5ea6\u5927\u5e45\u4e0b\u964d\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6dfb\u52a0\u6392\u5e8f\u4e3a\u4f55\u5bfc\u81f4\u67e5\u8be2\u901f\u5ea6\u5927\u5e45\u4e0b\u964d\uff1f \u95ee\u9898\u63cf\u8ff0\uff1a \u67e5\u8be2rd_pro_inventory_temp\u8868\uff0c\u5982\u679c\u6dfb\u52a0ORDER BY t.CREATED_Date DESC\u5b50\u53e5\uff0c\u67e5\u8be2\u65f6\u95f4\u4ece2\u79d2\u589e\u52a0\u523015\u79d2\u3002\u7136\u800c\uff0c\u5355\u72ec\u67e5\u8be2rd_pro_inventory_temp\u8868\u65f6\uff0c\u52a0\u4e0d\u52a0ORDER BY\u5bf9\u67e5\u8be2\u901f\u5ea6\u5f71\u54cd\u4e0d\u5927\u3002 \u539f\u56e0\u63a8\u6d4b\uff1a \u7d22\u5f15\u5229\u7528\u4e0e\u6392\u5e8f\u6210\u672c\uff1a \u6dfb\u52a0ORDER BY\u5b50\u53e5\u540e\uff0c\u5982\u679c\u8be5\u5b57\u6bb5\u4e0a\u6ca1\u6709\u5408\u9002\u7684\u7d22\u5f15\uff0cMySQL\u5c06\u8fdb\u884c\u6587\u4ef6\u6392\u5e8f\uff0c\u5373\u5bf9\u6574\u4e2a\u7ed3\u679c\u96c6\u8fdb\u884c\u7269\u7406\u6392\u5e8f\u3002\u8fd9\u6bd4\u4e0d\u6392\u5e8f\u65f6\u66f4\u8d39\u65f6\u3002 JOIN\u7684\u5f71\u54cd\uff1a \u67e5\u8be2\u6d89\u53card_pro_inventory_temp\u8868\u4e0e\u5b50\u67e5\u8be2\u7ed3\u679c\u7684LEFT JOIN\u3002JOIN\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5927\u5e45\u589e\u52a0\u7ed3\u679c\u96c6\uff0c\u4f7f\u5f97\u968f\u540e\u7684\u6392\u5e8f\u64cd\u4f5c\u66f4\u590d\u6742\u548c\u8017\u65f6\u3002 \u7d22\u5f15\u5229\u7528\u7387\u5dee\u5f02\uff1a \u5355\u72ec\u67e5\u8be2rd_pro_inventory_temp\u8868\u65f6\uff0c\u7531\u4e8e\u6570\u636e\u91cf\u5c0f\uff0c\u5373\u4fbfCREATED_Date\u5b57\u6bb5\u6ca1\u6709\u7d22\u5f15\uff0c\u6392\u5e8f\u4e5f\u80fd\u5feb\u901f\u5b8c\u6210\u3002\u7136\u800c\uff0c\u4e00\u65e6\u52a0\u5165JOIN\u548c\u5927\u7ed3\u679c\u96c6\uff0c\u65e0\u7d22\u5f15\u6392\u5e8f\u7684\u6210\u672c\u5c31\u4f1a\u663e\u73b0\u3002 \u4f18\u5316\u5efa\u8bae\uff1a \u7d22\u5f15\u4f18\u5316\uff1a\u786e\u4fddrd_pro_inventory_temp\u8868\u4e2d\u7684CREATED_Date\u5b57\u6bb5\u6709\u9002\u5f53\u7684\u7d22\u5f15\u3002 JOIN\u4e0e\u5b50\u67e5\u8be2\u5206\u6790\uff1a \u68c0\u67e5JOIN\u5b50\u67e5\u8be2\u7684\u8f93\u51fa\u5927\u5c0f\uff0c\u4f18\u5316\u5b50\u67e5\u8be2\u903b\u8f91\u3002\u5982\u679c\u53ef\u80fd\uff0c\u5e94\u51cf\u5c11\u6216\u4f18\u5316GROUP_CONCAT\u51fd\u6570\uff0c\u4ee5\u51cf\u8f7b\u6570\u636e\u5904\u7406\u8d1f\u8f7d\u3002 \u67e5\u8be2\u6267\u884c\u8ba1\u5212\u5206\u6790\uff1a\u4f7f\u7528EXPLAIN\u5de5\u5177\u5206\u6790\u67e5\u8be2\u6267\u884c\u8ba1\u5212\uff0c\u786e\u8ba4\u7d22\u5f15\u662f\u5426\u5f97\u5230\u6709\u6548\u4f7f\u7528\uff0c\u4ee5\u53ca\u6392\u5e8f\u9636\u6bb5\u7684\u5177\u4f53\u6267\u884c\u60c5\u51b5\u3002\u57fa\u4e8e\u6b64\uff0c\u8fdb\u884c\u6709\u9488\u5bf9\u6027\u7684\u4f18\u5316\u3002 \u4ee5\u4e0a\u5c31\u662f\u6dfb\u52a0 ORDER BY \u5b50\u53e5\u4e3a\u4f55\u5bfc\u81f4\u67e5\u8be2\u901f\u5ea6\u5927\u5e45\u4e0b\u964d\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-27288","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/27288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=27288"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/27288\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=27288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=27288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=27288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}