{"id":167967,"date":"2024-11-06T08:24:18","date_gmt":"2024-11-06T00:24:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/167967\/"},"modified":"2024-11-06T08:24:19","modified_gmt":"2024-11-06T00:24:19","slug":"%e5%85%a9%e7%a8%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%9f%a5%e8%a9%a2%e8%a1%a8%e4%b8%bb%e9%8d%b5%e5%a4%96%e9%8d%b5%e4%bf%a1%e6%81%af%e7%9a%84sql%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/167967\/","title":{"rendered":"\u5169\u7a2e\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u8868\u4e3b\u9375\u5916\u9375\u4fe1\u606f\u7684SQL\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"%e5%85%a9%e7%a8%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%9f%a5%e8%a9%a2%e8%a1%a8%e4%b8%bb%e9%8d%b5%e5%a4%96%e9%8d%b5%e4%bf%a1%e6%81%af%e7%9a%84sql%e8%aa%9e%e5%8f%a5-akCwBOzgSg\">\u5169\u7a2e\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u8868\u4e3b\u9375\u5916\u9375\u4fe1\u606f\u7684SQL\u8a9e\u53e5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u548c\u5916\u9375\u662f\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u548c\u95dc\u806f\u6027\u7684\u95dc\u9375\u5143\u7d20\u3002\u4e3b\u9375\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\uff0c\u800c\u5916\u9375\u5247\u7528\u65bc\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728\u5169\u7a2e\u6d41\u884c\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u4e2d\uff0c\u5982\u4f55\u67e5\u8a62\u8868\u7684\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f\uff0c\u5206\u5225\u662f MySQL \u548c PostgreSQL\u3002<\/p>\n<h2 id=\"mysql-%e4%b8%ad%e6%9f%a5%e8%a9%a2%e4%b8%bb%e9%8d%b5%e5%92%8c%e5%a4%96%e9%8d%b5%e4%bf%a1%e6%81%af-akCwBOzgSg\">MySQL \u4e2d\u67e5\u8a62\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f<\/h2>\n<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>INFORMATION_SCHEMA<\/code> \u6578\u64da\u5eab\u4f86\u67e5\u8a62\u8868\u7684\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u4e3b\u9375\u548c\u5916\u9375\u7684 SQL \u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e4%b8%bb%e9%8d%b5-akCwBOzgSg\">\u67e5\u8a62\u4e3b\u9375<\/h3>\n<pre><code>\nSELECT \n    TABLE_NAME, \n    COLUMN_NAME, \n    CONSTRAINT_NAME \nFROM \n    INFORMATION_SCHEMA.KEY_COLUMN_USAGE \nWHERE \n    TABLE_SCHEMA = '\u4f60\u7684\u6578\u64da\u5eab\u540d' \n    AND CONSTRAINT_NAME = 'PRIMARY';\n<\/code><\/pre>\n<p>\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u8fd4\u56de\u6307\u5b9a\u6578\u64da\u5eab\u4e2d\u6240\u6709\u8868\u7684\u4e3b\u9375\u4fe1\u606f\uff0c\u5305\u62ec\u8868\u540d\u3001\u5217\u540d\u548c\u7d04\u675f\u540d\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e5%a4%96%e9%8d%b5-akCwBOzgSg\">\u67e5\u8a62\u5916\u9375<\/h3>\n<pre><code>\nSELECT \n    TABLE_NAME, \n    COLUMN_NAME, \n    CONSTRAINT_NAME, \n    REFERENCED_TABLE_NAME, \n    REFERENCED_COLUMN_NAME \nFROM \n    INFORMATION_SCHEMA.KEY_COLUMN_USAGE \nWHERE \n    TABLE_SCHEMA = '\u4f60\u7684\u6578\u64da\u5eab\u540d' \n    AND REFERENCED_TABLE_NAME IS NOT NULL;\n<\/code><\/pre>\n<p>\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u5916\u9375\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u5916\u9375\u6240\u5c6c\u7684\u8868\u3001\u5217\u3001\u7d04\u675f\u540d\u4ee5\u53ca\u5f15\u7528\u7684\u8868\u548c\u5217\u3002<\/p>\n<h2 id=\"postgresql-%e4%b8%ad%e6%9f%a5%e8%a9%a2%e4%b8%bb%e9%8d%b5%e5%92%8c%e5%a4%96%e9%8d%b5%e4%bf%a1%e6%81%af-akCwBOzgSg\">PostgreSQL \u4e2d\u67e5\u8a62\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u67e5\u8a62\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f\u7684\u65b9\u5f0f\u7565\u6709\u4e0d\u540c\u3002\u53ef\u4ee5\u4f7f\u7528 <code>pg_catalog<\/code> \u4f86\u7372\u53d6\u76f8\u95dc\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u4e3b\u9375\u548c\u5916\u9375\u7684 SQL \u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e4%b8%bb%e9%8d%b5-akCwBOzgSg\">\u67e5\u8a62\u4e3b\u9375<\/h3>\n<pre><code>\nSELECT \n    kcu.table_name, \n    kcu.column_name, \n    tc.constraint_name \nFROM \n    information_schema.table_constraints AS tc \nJOIN \n    information_schema.key_column_usage AS kcu \nON \n    tc.constraint_name = kcu.constraint_name \nWHERE \n    tc.constraint_type = 'PRIMARY KEY' \n    AND kcu.table_schema = 'public';\n<\/code><\/pre>\n<p>\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u8fd4\u56de PostgreSQL \u4e2d\u6240\u6709\u8868\u7684\u4e3b\u9375\u4fe1\u606f\uff0c\u5305\u62ec\u8868\u540d\u3001\u5217\u540d\u548c\u7d04\u675f\u540d\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e5%a4%96%e9%8d%b5-akCwBOzgSg\">\u67e5\u8a62\u5916\u9375<\/h3>\n<pre><code>\nSELECT \n    kcu.table_name, \n    kcu.column_name, \n    tc.constraint_name, \n    ccu.table_name AS foreign_table_name, \n    ccu.column_name AS foreign_column_name \nFROM \n    information_schema.table_constraints AS tc \nJOIN \n    information_schema.key_column_usage AS kcu \nON \n    tc.constraint_name = kcu.constraint_name \nJOIN \n    information_schema.constraint_column_usage AS ccu \nON \n    ccu.constraint_name = tc.constraint_name \nWHERE \n    tc.constraint_type = 'FOREIGN KEY' \n    AND kcu.table_schema = 'public';\n<\/code><\/pre>\n<p>\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u5916\u9375\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u5916\u9375\u6240\u5c6c\u7684\u8868\u3001\u5217\u3001\u7d04\u675f\u540d\u4ee5\u53ca\u5f15\u7528\u7684\u8868\u548c\u5217\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-akCwBOzgSg\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u548c\u5916\u9375\u7684\u6b63\u78ba\u4f7f\u7528\u5c0d\u65bc\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u95dc\u806f\u6027\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u5728 MySQL \u9084\u662f PostgreSQL \u4e2d\uff0c\u901a\u904e\u67e5\u8a62 <code>INFORMATION_SCHEMA<\/code> \u6216 <code>pg_catalog<\/code>\uff0c\u7528\u6236\u90fd\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u6240\u9700\u7684\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f\u3002\u9019\u4e9b\u67e5\u8a62\u4e0d\u50c5\u6709\u52a9\u65bc\u6578\u64da\u5eab\u7ba1\u7406\uff0c\u4e5f\u80fd\u5728\u958b\u767c\u904e\u7a0b\u4e2d\u63d0\u4f9b\u5fc5\u8981\u7684\u652f\u6301\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\uff0c\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u61c9\u7528\u7a0b\u5e8f\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5169\u7a2e\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u8868\u4e3b\u9375\u548c\u5916\u9375\u4fe1\u606f\u7684SQL\u8a9e\u53e5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u548c\u67e5\u8a62\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-167967","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167967","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=167967"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167967\/revisions"}],"predecessor-version":[{"id":167968,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167967\/revisions\/167968"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=167967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=167967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=167967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}