{"id":170187,"date":"2024-11-06T21:52:24","date_gmt":"2024-11-06T13:52:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/170187\/"},"modified":"2024-11-06T21:52:25","modified_gmt":"2024-11-06T13:52:25","slug":"%e5%88%a4%e6%96%b7%e8%a1%a8%e4%b8%ad%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8sql%e8%87%aa%e5%a2%9e%e5%88%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/170187\/","title":{"rendered":"\u5224\u65b7\u8868\u4e2d\u662f\u5426\u5b58\u5728SQL\u81ea\u589e\u5217"},"content":{"rendered":"<h1 id=\"%e5%88%a4%e6%96%b7%e8%a1%a8%e4%b8%ad%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8sql%e8%87%aa%e5%a2%9e%e5%88%97-QqaCfEmvQd\">\u5224\u65b7\u8868\u4e2d\u662f\u5426\u5b58\u5728SQL\u81ea\u589e\u5217<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\uff0c\u81ea\u589e\u5217\uff08Auto Increment Column\uff09\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u7279\u6027\uff0c\u7279\u5225\u662f\u5728\u95dc\u806f\u578b\u8cc7\u6599\u5eab\u4e2d\u3002\u81ea\u589e\u5217\u901a\u5e38\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u8cc7\u6599\uff0c\u7279\u5225\u662f\u5728\u4e3b\u9375\u7684\u8a2d\u7f6e\u4e0a\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5224\u65b7\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u662f\u5426\u5b58\u5728\u81ea\u589e\u5217\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%87%aa%e5%a2%9e%e5%88%97%ef%bc%9f-QqaCfEmvQd\">\u4ec0\u9ebc\u662f\u81ea\u589e\u5217\uff1f<\/h2>\n<p>\u81ea\u589e\u5217\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u8cc7\u6599\u985e\u578b\uff0c\u7576\u65b0\u8cc7\u6599\u88ab\u63d2\u5165\u5230\u8cc7\u6599\u8868\u4e2d\u6642\uff0c\u8a72\u5217\u7684\u503c\u6703\u81ea\u52d5\u589e\u52a0\u3002\u9019\u901a\u5e38\u7528\u65bc\u4e3b\u9375\uff0c\u4ee5\u78ba\u4fdd\u6bcf\u4e00\u884c\u8cc7\u6599\u90fd\u6709\u552f\u4e00\u7684\u6a19\u8b58\u7b26\u3002\u5728\u8a31\u591a\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\uff0c\u81ea\u589e\u5217\u7684\u8a2d\u7f6e\u53ef\u4ee5\u901a\u904e\u7279\u5b9a\u7684\u8a9e\u6cd5\u4f86\u5be6\u73fe\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%b7%e8%a1%a8%e4%b8%ad%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8%e8%87%aa%e5%a2%9e%e5%88%97-QqaCfEmvQd\">\u5982\u4f55\u5224\u65b7\u8868\u4e2d\u662f\u5426\u5b58\u5728\u81ea\u589e\u5217<\/h2>\n<p>\u8981\u5224\u65b7\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u662f\u5426\u5b58\u5728\u81ea\u589e\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u63d0\u4f9b\u7684\u67e5\u8a62\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u8cc7\u6599\u5eab\u7cfb\u7d71\u53ca\u5176\u76f8\u61c9\u7684\u67e5\u8a62\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"mysql-QqaCfEmvQd\">MySQL<\/h3>\n<p>\u5728MySQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u8cc7\u6599\u8868\u7684\u7d50\u69cb\uff0c\u4e26\u5224\u65b7\u662f\u5426\u5b58\u5728\u81ea\u589e\u5217\uff1a<\/p>\n<pre><code>SHOW CREATE TABLE your_table_name;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u6703\u8fd4\u56de\u8cc7\u6599\u8868\u7684\u5275\u5efa\u8a9e\u53e5\uff0c\u5176\u4e2d\u6703\u5305\u542b\u81ea\u589e\u5217\u7684\u5b9a\u7fa9\u3002\u5982\u679c\u5728\u5b9a\u7fa9\u4e2d\u770b\u5230\u985e\u4f3c\u65bc\u300cAUTO_INCREMENT\u300d\u7684\u5b57\u6a23\uff0c\u5247\u8868\u793a\u8a72\u5217\u662f\u81ea\u589e\u5217\u3002<\/p>\n<h3 id=\"postgresql-QqaCfEmvQd\">PostgreSQL<\/h3>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u81ea\u589e\u5217\u901a\u5e38\u662f\u901a\u904e\u5e8f\u5217\uff08Sequence\uff09\u4f86\u5be6\u73fe\u7684\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u8cc7\u6599\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>SELECT column_name, column_default \nFROM information_schema.columns \nWHERE table_name = 'your_table_name';<\/code><\/pre>\n<p>\u5982\u679c\u67d0\u4e00\u5217\u7684\u300ccolumn_default\u300d\u5305\u542b\u300cnextval\u300d\uff0c\u5247\u8a72\u5217\u70ba\u81ea\u589e\u5217\u3002<\/p>\n<h3 id=\"sql-server-QqaCfEmvQd\">SQL Server<\/h3>\n<p>\u5728SQL Server\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u8cc7\u6599\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>SELECT COLUMN_NAME \nFROM INFORMATION_SCHEMA.COLUMNS \nWHERE TABLE_NAME = 'your_table_name' \nAND COLUMNPROPERTY(OBJECT_ID(TABLE_NAME), COLUMN_NAME, 'IsIdentity') = 1;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u6703\u8fd4\u56de\u6240\u6709\u81ea\u589e\u5217\u7684\u540d\u7a31\u3002\u5982\u679c\u7d50\u679c\u4e0d\u70ba\u7a7a\uff0c\u5247\u8868\u793a\u8a72\u8cc7\u6599\u8868\u4e2d\u5b58\u5728\u81ea\u589e\u5217\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%a2%9e%e5%88%97%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-QqaCfEmvQd\">\u81ea\u589e\u5217\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u81ea\u589e\u5217\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\u6709\u5176\u512a\u9ede\u548c\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u81ea\u52d5\u751f\u6210\u552f\u4e00\u6a19\u8b58\u7b26\uff0c\u6e1b\u5c11\u624b\u52d5\u7ba1\u7406\u7684\u9ebb\u7169\u3002<\/li>\n<li>\u63d0\u9ad8\u8cc7\u6599\u63d2\u5165\u7684\u6548\u7387\uff0c\u56e0\u70ba\u4e0d\u9700\u8981\u6aa2\u67e5\u73fe\u6709\u7684\u6700\u5927\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u5728\u8cc7\u6599\u8868\u4e2d\u522a\u9664\u884c\u5f8c\uff0c\u81ea\u589e\u5217\u7684\u503c\u4e0d\u6703\u91cd\u65b0\u4f7f\u7528\uff0c\u53ef\u80fd\u5c0e\u81f4\u7a7a\u6d1e\u7684\u8b58\u5225\u78bc\u3002<\/li>\n<li>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u53ef\u80fd\u6703\u9047\u5230\u8b58\u5225\u78bc\u885d\u7a81\u7684\u554f\u984c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-QqaCfEmvQd\">\u7d50\u8ad6<\/h2>\n<p>\u5224\u65b7\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u662f\u5426\u5b58\u5728\u81ea\u589e\u5217\u662f\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\u7684\u4e00\u500b\u57fa\u672c\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528\u4e0d\u540c\u8cc7\u6599\u5eab\u7cfb\u7d71\u63d0\u4f9b\u7684\u67e5\u8a62\u8a9e\u53e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u4e86\u89e3\u81ea\u589e\u5217\u7684\u7279\u6027\u53ca\u5176\u512a\u7f3a\u9ede\uff0c\u6709\u52a9\u65bc\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u6709\u95dc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5224\u65b7\u8868\u4e2d\u662f\u5426\u5b58\u5728SQL\u81ea\u589e\u5217\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u552f\u4e00\u6027\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\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-170187","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170187","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=170187"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170187\/revisions"}],"predecessor-version":[{"id":170188,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170187\/revisions\/170188"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=170187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=170187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=170187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}