{"id":6313,"date":"2024-11-14T11:09:58","date_gmt":"2024-11-14T03:09:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6313\/"},"modified":"2024-11-14T11:09:58","modified_gmt":"2024-11-14T03:09:58","slug":"mysql%e7%b4%a2%e5%bc%95%e6%9c%80%e5%b7%a6%e5%8c%b9%e9%85%8d%e5%8e%9f%e5%88%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6313\/","title":{"rendered":"mysql\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219"},"content":{"rendered":"<blockquote><p>\n  \u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u8981\u6c42\u591a\u5217\u7d22\u5f15\u67e5\u8be2\u65f6\uff0c\u5fc5\u987b\u4ece\u6700\u5de6\u8fb9\u7684\u5217\u5f00\u59cb\u8fde\u7eed\u5339\u914d\u6761\u4ef6\uff0c\u8fdd\u53cd\u6b64\u539f\u5219\u5c06\u5bfc\u81f4\u5168\u8868\u626b\u63cf\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202407\/31\/2024073122225238983.jpg\" class=\"aligncenter\" title=\"mysql\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u63d2\u56fe\" alt=\"mysql\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL \u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\uff1f<\/strong><\/p>\n<p>\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u89c4\u5b9a\uff0c\u5bf9\u4e8e\u591a\u5217\u7d22\u5f15\uff0c\u67e5\u8be2\u6761\u4ef6\u4e2d\u5fc5\u987b\u4ece\u6700\u5de6\u8fb9\u7684\u5217\u5f00\u59cb\u5339\u914d\uff0c\u4e14\u5339\u914d\u6761\u4ef6\u5fc5\u987b\u8fde\u7eed\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u89e3\u91ca<\/strong><\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8bbe\u5b58\u5728\u4e00\u4e2a\u7d22\u5f15 (a, b, c)\u3002\u5bf9\u4e8e\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n<pre>SELECT * FROM table WHERE a = 1 AND b = 2;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u8981\u6c42 a \u5217\u5fc5\u987b\u9996\u5148\u5339\u914d\uff0c\u7136\u540e\u624d\u80fd\u5339\u914d b \u5217\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u7d22\u5f15\u53ea\u80fd\u7528\u4e8e\u5339\u914d a = 1\uff0c\u800c b = 2 \u6761\u4ef6\u65e0\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u4e0d\u662f\u8fde\u7eed\u5339\u914d\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5bf9\u4e8e\u6b64\u67e5\u8be2\uff0cMySQL \u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15\uff0c\u800c\u662f\u6267\u884c\u5168\u8868\u626b\u63cf\u3002<\/p>\n<p><strong>\u4f18\u52bf<\/strong><\/p>\n<p>\u6700\u5de6\u5339\u914d\u539f\u5219\u6709\u52a9\u4e8e\u4f18\u5316\u67e5\u8be2\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u786e\u4fdd\u7d22\u5f15\u53ef\u4ee5\u6709\u6548\u5730\u7b5b\u9009\u6570\u636e\u3002\u901a\u8fc7\u5f3a\u5236\u8fde\u7eed\u5339\u914d\u6761\u4ef6\uff0c\u7d22\u5f15\u53ef\u4ee5\u8df3\u8fc7\u4e0d\u5fc5\u8981\u7684\u884c\uff0c\u4ece\u800c\u51cf\u5c11 I\/O \u64cd\u4f5c\u548c\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\u3002<\/p>\n<p><strong>\u4f8b\u5916<\/strong><\/p>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6700\u5de6\u5339\u914d\u539f\u5219\u53ef\u80fd\u4e0d\u4f1a\u88ab\u5b8c\u5168\u9075\u5faa\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li> <strong>\u8303\u56f4\u67e5\u8be2:<\/strong> \u5bf9\u4e8e\u8303\u56f4\u67e5\u8be2\uff0c\u7d22\u5f15\u4f1a\u88ab\u7528\u4e8e\u5339\u914d\u6700\u5de6\u8fb9\u7684\u5217\uff0c\u4f46\u540e\u7eed\u5217\u53ef\u4ee5\u662f\u975e\u8fde\u7eed\u5339\u914d\u3002<\/li>\n<li> <strong>\u7d22\u5f15\u8986\u76d6:<\/strong> \u5982\u679c\u7d22\u5f15\u5305\u542b\u67e5\u8be2\u4e2d\u6240\u6709\u8fd4\u56de\u7684\u5217\uff0c\u5219\u5373\u4f7f\u6761\u4ef6\u4e0d\u6ee1\u8db3\u6700\u5de6\u5339\u914d\u539f\u5219\uff0cMySQL \u4e5f\u53ef\u80fd\u4f1a\u4f7f\u7528\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u4e3a\u4e86\u5145\u5206\u5229\u7528\u6700\u5de6\u5339\u914d\u539f\u5219\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\u59cb\u7ec8\u5728\u67e5\u8be2\u4e2d\u6307\u5b9a\u7d22\u5f15\u4e2d\u5305\u542b\u7684\u6240\u6709\u5217\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528 OR \u6761\u4ef6\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u80fd\u7834\u574f\u6700\u5de6\u5339\u914d\u539f\u5219\u3002<\/li>\n<li>\u4f7f\u7528\u5206\u7247\u7d22\u5f15\u6765\u8986\u76d6\u5e38\u89c1\u7684\u67e5\u8be2\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u8981\u6c42\u591a\u5217\u7d22\u5f15\u67e5\u8be2\u65f6\uff0c\u5fc5\u987b\u4ece\u6700\u5de6\u8fb9\u7684\u5217\u5f00\u59cb\u8fde\u7eed\u5339\u914d\u6761\u4ef6\uff0c\u8fdd\u53cd\u6b64\u539f\u5219\u5c06\u5bfc\u81f4\u5168\u8868\u626b\u63cf\u3002 MySQL \u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219 \u4ec0\u4e48\u662f\u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\uff1f \u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u89c4\u5b9a\uff0c\u5bf9\u4e8e\u591a\u5217\u7d22\u5f15\uff0c\u67e5\u8be2\u6761\u4ef6\u4e2d\u5fc5\u987b\u4ece\u6700\u5de6\u8fb9\u7684\u5217\u5f00\u59cb\u5339\u914d\uff0c\u4e14\u5339\u914d\u6761\u4ef6\u5fc5\u987b\u8fde\u7eed\u3002 \u8be6\u7ec6\u89e3\u91ca \u4f8b\u5982\uff0c\u5047\u8bbe\u5b58\u5728\u4e00\u4e2a\u7d22\u5f15 (a, b, c)\u3002\u5bf9\u4e8e\u4ee5\u4e0b\u67e5\u8be2\uff1a SELECT * FROM table WHERE a = 1 AND b = 2; \u767b\u5f55\u540e\u590d\u5236 \u7d22\u5f15\u6700\u5de6\u5339\u914d\u539f\u5219\u8981\u6c42 a \u5217\u5fc5\u987b\u9996\u5148\u5339\u914d\uff0c\u7136\u540e\u624d\u80fd\u5339\u914d b \u5217\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u7d22\u5f15\u53ea\u80fd\u7528\u4e8e\u5339\u914d a = 1\uff0c\u800c b = 2 \u6761\u4ef6\u65e0\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u4e0d\u662f\u8fde\u7eed\u5339\u914d\u3002 \u56e0\u6b64\uff0c\u5bf9\u4e8e\u6b64\u67e5\u8be2\uff0cMySQL \u4e0d\u4f1a\u4f7f\u7528\u7d22\u5f15\uff0c\u800c\u662f\u6267\u884c\u5168\u8868\u626b\u63cf\u3002 \u4f18\u52bf \u6700\u5de6\u5339\u914d\u539f\u5219\u6709\u52a9\u4e8e\u4f18\u5316\u67e5\u8be2\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u786e\u4fdd\u7d22\u5f15\u53ef\u4ee5\u6709\u6548\u5730\u7b5b\u9009\u6570\u636e\u3002\u901a\u8fc7\u5f3a\u5236\u8fde\u7eed\u5339\u914d\u6761\u4ef6\uff0c\u7d22\u5f15\u53ef\u4ee5\u8df3\u8fc7\u4e0d\u5fc5\u8981\u7684\u884c\uff0c\u4ece\u800c\u51cf\u5c11 I\/O \u64cd\u4f5c\u548c\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\u3002 \u4f8b\u5916 \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6700\u5de6\u5339\u914d\u539f\u5219\u53ef\u80fd\u4e0d\u4f1a\u88ab\u5b8c\u5168\u9075\u5faa\uff0c\u4f8b\u5982\uff1a \u8303\u56f4\u67e5\u8be2: \u5bf9\u4e8e\u8303\u56f4\u67e5\u8be2\uff0c\u7d22\u5f15\u4f1a\u88ab\u7528\u4e8e\u5339\u914d\u6700\u5de6\u8fb9\u7684\u5217\uff0c\u4f46\u540e\u7eed\u5217\u53ef\u4ee5\u662f\u975e\u8fde\u7eed\u5339\u914d\u3002 \u7d22\u5f15\u8986\u76d6: \u5982\u679c\u7d22\u5f15\u5305\u542b\u67e5\u8be2\u4e2d\u6240\u6709\u8fd4\u56de\u7684\u5217\uff0c\u5219\u5373\u4f7f\u6761\u4ef6\u4e0d\u6ee1\u8db3\u6700\u5de6\u5339\u914d\u539f\u5219\uff0cMySQL \u4e5f\u53ef\u80fd\u4f1a\u4f7f\u7528\u7d22\u5f15\u3002 \u6700\u4f73\u5b9e\u8df5 \u4e3a\u4e86\u5145\u5206\u5229\u7528\u6700\u5de6\u5339\u914d\u539f\u5219\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a \u59cb\u7ec8\u5728\u67e5\u8be2\u4e2d\u6307\u5b9a\u7d22\u5f15\u4e2d\u5305\u542b\u7684\u6240\u6709\u5217\u3002 \u907f\u514d\u4f7f\u7528 OR \u6761\u4ef6\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u80fd\u7834\u574f\u6700\u5de6\u5339\u914d\u539f\u5219\u3002 \u4f7f\u7528\u5206\u7247\u7d22\u5f15\u6765\u8986\u76d6\u5e38\u89c1\u7684\u67e5\u8be2\u6a21\u5f0f\u3002 [&hellip;]<\/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-6313","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6313","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=6313"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6313\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}