{"id":165873,"date":"2024-11-05T13:33:20","date_gmt":"2024-11-05T05:33:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165873\/"},"modified":"2024-11-05T13:33:20","modified_gmt":"2024-11-05T05:33:20","slug":"%e5%bf%ab%e9%80%9f%e6%9f%a5%e8%a9%a2%e6%9c%80%e8%bf%917%e5%a4%a9%e7%9a%84mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84-mysql%e6%9f%a5%e8%a9%a27%e5%a4%a9%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165873\/","title":{"rendered":"\u5feb\u901f\u67e5\u8a62\u6700\u8fd17\u5929\u7684Mysql\u6578\u64da\u5eab\u8a18\u9304 (mysql\u67e5\u8a627\u5929\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e6%9f%a5%e8%a9%a2%e6%9c%80%e8%bf%917%e5%a4%a9%e7%9a%84mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84-OMCclkUOXl\">\u5feb\u901f\u67e5\u8a62\u6700\u8fd17\u5929\u7684MySQL\u6578\u64da\u5eab\u8a18\u9304<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u67e5\u8a62\u7279\u5b9a\u6642\u9593\u7bc4\u570d\u5167\u7684\u6578\u64da\u662f\u4e00\u9805\u5e38\u898b\u7684\u9700\u6c42\u3002\u5c0d\u65bc\u4f7f\u7528MySQL\u7684\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u4f86\u8aaa\uff0c\u5feb\u901f\u67e5\u8a62\u6700\u8fd17\u5929\u7684\u6578\u64da\u5eab\u8a18\u9304\u53ef\u4ee5\u5e6b\u52a9\u4ed6\u5011\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u8b8a\u5316\u548c\u8da8\u52e2\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728MySQL\u4e2d\u57f7\u884c\u9019\u985e\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<h2 id=\"mysql%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8-OMCclkUOXl\">MySQL\u65e5\u671f\u548c\u6642\u9593\u51fd\u6578<\/h2>\n<p>\u5728\u9032\u884c\u65e5\u671f\u67e5\u8a62\u6642\uff0cMySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u8f15\u9b06\u5730\u8655\u7406\u548c\u6bd4\u8f03\u65e5\u671f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65e5\u671f\u51fd\u6578\uff1a<\/p>\n<ul>\n<li><code>CURDATE()<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u65e5\u671f\u3002<\/li>\n<li><code>NOW()<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<li><code>DATE_SUB()<\/code>\uff1a\u5f9e\u6307\u5b9a\u65e5\u671f\u4e2d\u6e1b\u53bb\u4e00\u6bb5\u6642\u9593\u3002<\/li>\n<li><code>DATE_ADD()<\/code>\uff1a\u5411\u6307\u5b9a\u65e5\u671f\u6dfb\u52a0\u4e00\u6bb5\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e6%9c%80%e8%bf%917%e5%a4%a9%e7%9a%84%e6%95%b8%e6%93%9a-OMCclkUOXl\">\u67e5\u8a62\u6700\u8fd17\u5929\u7684\u6578\u64da<\/h2>\n<p>\u8981\u67e5\u8a62\u6700\u8fd17\u5929\u7684\u6578\u64da\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528<code>WHERE<\/code>\u5b50\u53e5\u4f86\u7be9\u9078\u51fa\u7b26\u5408\u689d\u4ef6\u7684\u8a18\u9304\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>orders<\/code>\u7684\u8868\uff0c\u4e26\u4e14\u8a72\u8868\u4e2d\u6709\u4e00\u500b\u540d\u70ba<code>order_date<\/code>\u7684\u65e5\u671f\u5b57\u6bb5\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u7372\u53d6\u6700\u8fd17\u5929\u7684\u8a02\u55ae\u8a18\u9304\uff1a<\/p>\n<pre><code>SELECT * FROM orders \nWHERE order_date &gt;= DATE_SUB(CURDATE(), INTERVAL 7 DAY);<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5728\u904e\u53bb7\u5929\u5167\u4e0b\u7684\u8a02\u55ae\u3002<code>DATE_SUB(CURDATE(), INTERVAL 7 DAY)<\/code>\u51fd\u6578\u8a08\u7b97\u51fa7\u5929\u524d\u7684\u65e5\u671f\uff0c\u4e26\u5c07\u5176\u8207<code>order_date<\/code>\u9032\u884c\u6bd4\u8f03\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%99%82%e9%96%93%e6%88%b3%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2-OMCclkUOXl\">\u4f7f\u7528\u6642\u9593\u6233\u9032\u884c\u67e5\u8a62<\/h2>\n<p>\u5982\u679c\u60a8\u7684\u65e5\u671f\u5b57\u6bb5\u662f\u4ee5\u6642\u9593\u6233\u683c\u5f0f\u5b58\u5132\u7684\uff0c\u60a8\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528\u985e\u4f3c\u7684\u67e5\u8a62\u4f86\u7372\u53d6\u6700\u8fd17\u5929\u7684\u8a18\u9304\u3002\u5047\u8a2d<code>order_timestamp<\/code>\u662f\u4ee5\u6642\u9593\u6233\u683c\u5f0f\u5b58\u5132\u7684\u5b57\u6bb5\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM orders \nWHERE order_timestamp &gt;= UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 7 DAY));<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>UNIX_TIMESTAMP()<\/code>\u51fd\u6578\u5c07\u65e5\u671f\u8f49\u63db\u70ba\u6642\u9593\u6233\uff0c\u4ee5\u4fbf\u9032\u884c\u6bd4\u8f03\u3002<\/p>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-OMCclkUOXl\">\u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u5728\u67e5\u8a62\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5728\u65e5\u671f\u5b57\u6bb5\u4e0a\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u50c5\u9078\u64c7\u9700\u8981\u7684\u5b57\u6bb5\uff0c\u800c\u4e0d\u662f\u4f7f\u7528<code>*<\/code>\u4f86\u9078\u64c7\u6240\u6709\u5b57\u6bb5\u3002<\/li>\n<li>\u4f7f\u7528<code>EXPLAIN<\/code>\u8a9e\u53e5\u4f86\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u627e\u51fa\u6f5b\u5728\u7684\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-OMCclkUOXl\">\u7d50\u8ad6<\/h2>\n<p>\u67e5\u8a62\u6700\u8fd17\u5929\u7684MySQL\u6578\u64da\u5eab\u8a18\u9304\u662f\u4e00\u9805\u57fa\u672c\u4f46\u91cd\u8981\u7684\u6280\u80fd\u3002\u901a\u904e\u4f7f\u7528MySQL\u7684\u65e5\u671f\u548c\u6642\u9593\u51fd\u6578\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u65e5\u671f\u9084\u662f\u6642\u9593\u6233\uff0c\u6b63\u78ba\u7684\u67e5\u8a62\u8a9e\u53e5\u90fd\u80fd\u5e6b\u52a9\u60a8\u5feb\u901f\u7372\u5f97\u6240\u9700\u7684\u4fe1\u606f\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u8a18\u5f97\u5c0d\u65e5\u671f\u5b57\u6bb5\u9032\u884c\u7d22\u5f15\uff0c\u4e26\u512a\u5316\u67e5\u8a62\u8a9e\u53e5\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684MySQL\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u67e5\u8a62\u6700\u8fd17\u5929\u7684MySQL\u6578\u64da\u5eab\u8a18\u9304\uff0c\u8f15\u9b06\u7372\u53d6\u6240\u9700\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-165873","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165873","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=165873"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165873\/revisions"}],"predecessor-version":[{"id":165874,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165873\/revisions\/165874"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=165873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=165873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=165873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}