{"id":168435,"date":"2024-11-06T12:21:17","date_gmt":"2024-11-06T04:21:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168435\/"},"modified":"2024-11-06T12:21:18","modified_gmt":"2024-11-06T04:21:18","slug":"sql-%e8%aa%9e%e5%8f%a5%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%af%ab%e6%b3%95-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e9%80%a3%e6%8e%a5%e6%80%8e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168435\/","title":{"rendered":"SQL \u8a9e\u53e5\uff1a\u6578\u64da\u5eab\u5167\u9023\u63a5\u7684\u57fa\u672c\u5beb\u6cd5 (\u6578\u64da\u5eab\u5167\u9023\u63a5\u600e\u9ebc\u5beb)"},"content":{"rendered":"<h1 id=\"sql-%e8%aa%9e%e5%8f%a5%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%af%ab%e6%b3%95-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e9%80%a3%e6%8e%a5%e6%80%8e-yaSjGNFnIM\">SQL \u8a9e\u53e5\uff1a\u6578\u64da\u5eab\u5167\u9023\u63a5\u7684\u57fa\u672c\u5beb\u6cd5 (\u6578\u64da\u5eab\u5167\u9023\u63a5\u600e\u9ebc\u5beb)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u7576\u6d89\u53ca\u5230\u591a\u500b\u8868\u4e4b\u9593\u7684\u6578\u64da\u95dc\u806f\u6642\uff0c\u5167\u9023\u63a5\uff08INNER JOIN\uff09\u662f\u4e00\u7a2e\u5e38\u7528\u7684\u6280\u8853\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5167\u9023\u63a5\u7684\u57fa\u672c\u5beb\u6cd5\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%85%a7%e9%80%a3%e6%8e%a5%ef%bc%9f-yaSjGNFnIM\">\u4ec0\u9ebc\u662f\u5167\u9023\u63a5\uff1f<\/h2>\n<p>\u5167\u9023\u63a5\u662f\u4e00\u7a2e\u7528\u65bc\u5f9e\u5169\u500b\u6216\u591a\u500b\u8868\u4e2d\u9078\u64c7\u6578\u64da\u7684\u64cd\u4f5c\uff0c\u53ea\u6709\u7576\u9019\u4e9b\u8868\u4e4b\u9593\u5b58\u5728\u5339\u914d\u7684\u8a18\u9304\u6642\uff0c\u624d\u6703\u8fd4\u56de\u7d50\u679c\u3002\u9019\u610f\u5473\u8457\uff0c\u5167\u9023\u63a5\u53ea\u6703\u986f\u793a\u5728\u6240\u6709\u53c3\u8207\u7684\u8868\u4e2d\u90fd\u5b58\u5728\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-yaSjGNFnIM\">\u5167\u9023\u63a5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5167\u9023\u63a5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT \u5217\u540d1, \u5217\u540d2, ...\nFROM \u88681\nINNER JOIN \u88682\nON \u88681.\u5171\u540c\u5217 = \u88682.\u5171\u540c\u5217;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>\u5171\u540c\u5217<\/code>\u662f\u7528\u4f86\u9023\u63a5\u5169\u500b\u8868\u7684\u5217\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5177\u9ad4\u7684\u4f8b\u5b50\u4f86\u8aaa\u660e\u5167\u9023\u63a5\u7684\u4f7f\u7528\u3002<\/p>\n<h2 id=\"%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e5%af%a6%e9%9a%9b%e7%af%84%e4%be%8b-yaSjGNFnIM\">\u5167\u9023\u63a5\u7684\u5be6\u969b\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<code>\u5b78\u751f<\/code>\u548c<code>\u8ab2\u7a0b<\/code>\u3002<\/p>\n<ul>\n<li><code>\u5b78\u751f<\/code>\u8868\uff1a<\/li>\n<\/ul>\n<pre><code>\u5b78\u751fID | \u59d3\u540d\n1      | \u5f35\u4e09\n2      | \u674e\u56db\n3      | \u738b\u4e94<\/code><\/pre>\n<ul>\n<li><code>\u8ab2\u7a0b<\/code>\u8868\uff1a<\/li>\n<\/ul>\n<pre><code>\u8ab2\u7a0bID | \u5b78\u751fID | \u8ab2\u7a0b\u540d\u7a31\n1      | 1      | \u6578\u5b78\n2      | 1      | \u82f1\u6587\n3      | 2      | \u79d1\u5b78<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6bcf\u4f4d\u5b78\u751f\u6240\u9078\u64c7\u7684\u8ab2\u7a0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u5167\u9023\u63a5\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT \u5b78\u751f.\u59d3\u540d, \u8ab2\u7a0b.\u8ab2\u7a0b\u540d\u7a31\nFROM \u5b78\u751f\nINNER JOIN \u8ab2\u7a0b\nON \u5b78\u751f.\u5b78\u751fID = \u8ab2\u7a0b.\u5b78\u751fID;<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u5c07\u8fd4\u56de\u4ee5\u4e0b\u7d50\u679c\uff1a<\/p>\n<pre><code>\u59d3\u540d | \u8ab2\u7a0b\u540d\u7a31\n\u5f35\u4e09 | \u6578\u5b78\n\u5f35\u4e09 | \u82f1\u6587\n\u674e\u56db | \u79d1\u5b78<\/code><\/pre>\n<h2 id=\"%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-yaSjGNFnIM\">\u5167\u9023\u63a5\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u5167\u9023\u63a5\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5171\u540c\u5217\u7684\u6578\u64da\u985e\u578b\u76f8\u540c\uff0c\u4ee5\u907f\u514d\u985e\u578b\u4e0d\u5339\u914d\u7684\u932f\u8aa4\u3002<\/li>\n<li>\u5982\u679c\u67d0\u500b\u8868\u4e2d\u6c92\u6709\u5339\u914d\u7684\u8a18\u9304\uff0c\u5247\u8a72\u8a18\u9304\u5c07\u4e0d\u6703\u51fa\u73fe\u5728\u7d50\u679c\u4e2d\u3002<\/li>\n<li>\u53ef\u4ee5\u4f7f\u7528\u591a\u500b\u5167\u9023\u63a5\u4f86\u9023\u63a5\u591a\u500b\u8868\uff0c\u4f46\u8981\u6ce8\u610f\u67e5\u8a62\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-yaSjGNFnIM\">\u7d50\u8ad6<\/h2>\n<p>\u5167\u9023\u63a5\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5f9e\u591a\u500b\u8868\u4e2d\u63d0\u53d6\u76f8\u95dc\u6578\u64da\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528\u5167\u9023\u63a5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u4fe1\u606f\u3002\u4e86\u89e3\u5167\u9023\u63a5\u7684\u57fa\u672c\u5beb\u6cd5\u548c\u61c9\u7528\u5834\u666f\uff0c\u5c0d\u65bc\u4efb\u4f55\u5e0c\u671b\u6df1\u5165\u5b78\u7fd2SQL\u7684\u4eba\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\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\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u7ba1\u7406\u9700\u6c42\u3002\u7121\u8ad6\u662f<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0cServer.HK\u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 SQL \u8a9e\u53e5\u4e2d\u6578\u64da\u5eab\u5167\u9023\u63a5\u7684\u57fa\u672c\u5beb\u6cd5\uff0c\u638c\u63e1\u5982\u4f55\u6709\u6548\u67e5\u8a62\u591a\u500b\u8868\u683c\u4e2d\u7684\u6578\u64da\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-168435","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168435","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=168435"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168435\/revisions"}],"predecessor-version":[{"id":168436,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168435\/revisions\/168436"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}