{"id":20351,"date":"2024-01-02T04:44:25","date_gmt":"2024-01-02T04:44:25","guid":{"rendered":"https:\/\/server.hk\/blog\/20351\/"},"modified":"2024-11-14T10:39:57","modified_gmt":"2024-11-14T02:39:57","slug":"postgresql-command-alter-sequence","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20351\/","title":{"rendered":"PostgreSQL \u547d\u4ee4\uff1aALTER SEQUENCE"},"content":{"rendered":"

PostgreSQL \u547d\u4ee4\uff1aALTER SEQUENCE<\/h1>\n

PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u4e14\u529f\u80fd\u8c50\u5bcc\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u547d\u4ee4\u548c\u529f\u80fd\u4f86\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u5176\u4e2d\u4e00\u500b\u547d\u4ee4\u662f ALTER SEQUENCE<\/code>\uff0c\u5b83\u5141\u8a31\u60a8\u4fee\u6539 PostgreSQL \u4e2d\u5e8f\u5217\u7684\u5c6c\u6027\u3002<\/p>\n

\u4ec0\u9ebc\u662f PostgreSQL \u4e2d\u7684\u5e8f\u5217\uff1f<\/h2>\n

\u5728 PostgreSQL \u4e2d\uff0c\u5e8f\u5217\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u7528\u4f86\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6578\u5b57\u5e8f\u5217\u3002\u5b83\u901a\u5e38\u7528\u4f86\u81ea\u52d5\u751f\u6210\u8868\u7684\u4e3b\u9375\u503c\u3002\u5e8f\u5217\u662f\u4f7f\u7528 CREATE SEQUENCE<\/code> \u547d\u4ee4\u5275\u5efa\u7684\uff0c\u4e26\u4e14\u53ef\u4ee5\u901a\u904e\u5404\u7a2e\u5c6c\u6027\u9032\u884c\u81ea\u5b9a\u7fa9\u3002<\/p>\n

\u4f7f\u7528 ALTER SEQUENCE \u4fee\u6539\u5e8f\u5217<\/h2>\n

PostgreSQL \u4e2d\u7684 ALTER SEQUENCE<\/code> \u547d\u4ee4\u5141\u8a31\u60a8\u4fee\u6539\u73fe\u6709\u5e8f\u5217\u7684\u5c6c\u6027\u3002\u4ee5\u4e0b\u662f\u5176\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n

ALTER SEQUENCE sequence_name [ RESTART [ WITH ] restart_value ] [ INCREMENT [ BY ] increment ] [ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE ] [ START [ WITH ] start ] [ CACHE cache ] [ CYCLE | NO CYCLE ];<\/code><\/pre>\n
\u8b93\u6211\u5011\u63a2\u8a0e\u53ef\u4ee5\u4f7f\u7528 ALTER SEQUENCE<\/code> \u4fee\u6539\u7684\u6bcf\u500b\u5c6c\u6027\uff1a<\/p>\n
RESTART [ WITH ] restart_value<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u4ee5\u65b0\u7684\u503c\u91cd\u555f\u5e8f\u5217\u3002restart_value<\/code> \u6307\u5b9a\u5e8f\u5217\u7684\u65b0\u8d77\u59cb\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5e0c\u671b\u5c07\u5e8f\u5217\u91cd\u555f\u70ba 100\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence RESTART WITH 100;<\/code><\/pre>\n
INCREMENT [ BY ] increment<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u66f4\u6539\u5e8f\u5217\u7684\u589e\u91cf\u503c\u3002increment<\/code> \u6307\u5b9a\u5e8f\u5217\u503c\u61c9\u589e\u52a0\u6216\u6e1b\u5c11\u7684\u6578\u91cf\u3002\u4f8b\u5982\uff0c\u82e5\u60a8\u5e0c\u671b\u5c07\u589e\u91cf\u503c\u66f4\u6539\u70ba 2\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence INCREMENT BY 2;<\/code><\/pre>\n
MINVALUE minvalue | NO MINVALUE<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u8a2d\u7f6e\u5e8f\u5217\u7684\u6700\u5c0f\u503c\u3002minvalue<\/code> \u6307\u5b9a\u5e8f\u5217\u53ef\u4ee5\u751f\u6210\u7684\u6700\u5c0f\u503c\u3002\u5982\u679c\u60a8\u5e0c\u671b\u79fb\u9664\u6700\u5c0f\u503c\u9650\u5236\uff0c\u53ef\u4ee5\u4f7f\u7528 NO MINVALUE<\/code>\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u6700\u5c0f\u503c\u8a2d\u7f6e\u70ba 10\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence MINVALUE 10;<\/code><\/pre>\n
MAXVALUE maxvalue | NO MAXVALUE<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u8a2d\u7f6e\u5e8f\u5217\u7684\u6700\u5927\u503c\u3002maxvalue<\/code> \u6307\u5b9a\u5e8f\u5217\u53ef\u4ee5\u751f\u6210\u7684\u6700\u5927\u503c\u3002\u5982\u679c\u60a8\u5e0c\u671b\u79fb\u9664\u6700\u5927\u503c\u9650\u5236\uff0c\u53ef\u4ee5\u4f7f\u7528 NO MAXVALUE<\/code>\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u6700\u5927\u503c\u8a2d\u7f6e\u70ba 1000\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence MAXVALUE 1000;<\/code><\/pre>\n
START [ WITH ] start<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u66f4\u6539\u5e8f\u5217\u7684\u7576\u524d\u503c\u3002start<\/code> \u6307\u5b9a\u5e8f\u5217\u7684\u65b0\u7576\u524d\u503c\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u7576\u524d\u503c\u8a2d\u7f6e\u70ba 50\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence START WITH 50;<\/code><\/pre>\n
CACHE cache<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u66f4\u6539\u5e8f\u5217\u9810\u5148\u5206\u914d\u4e26\u5b58\u5132\u65bc\u5167\u5b58\u4e2d\u7684\u503c\u6578\u91cf\uff0c\u4ee5\u52a0\u5feb\u8a2a\u554f\u901f\u5ea6\u3002cache<\/code> \u6307\u5b9a\u7de9\u5b58\u7684\u503c\u6578\u91cf\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u7de9\u5b58\u5927\u5c0f\u8a2d\u7f6e\u70ba 100\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence CACHE 100;<\/code><\/pre>\n
CYCLE | NO CYCLE<\/h3>\n
\u6b64\u5c6c\u6027\u5141\u8a31\u60a8\u6307\u5b9a\u5e8f\u5217\u5728\u9054\u5230\u6700\u5927\u503c\u5f8c\u662f\u61c9\u8a72\u91cd\u65b0\u5f9e\u982d\u958b\u59cb\uff08CYCLE<\/code>\uff09\uff0c\u9084\u662f\u505c\u6b62\u751f\u6210\u503c\uff08NO CYCLE<\/code>\uff09\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u555f\u7528\u5faa\u74b0\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER SEQUENCE my_sequence CYCLE;<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
PostgreSQL \u4e2d\u7684 ALTER SEQUENCE<\/code> \u547d\u4ee4\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u4fee\u6539\u5e8f\u5217\u7684\u5c6c\u6027\u3002\u7121\u8ad6\u60a8\u662f\u9700\u8981\u66f4\u6539\u8d77\u59cb\u503c\u3001\u589e\u91cf\u3001\u6700\u5c0f\u6216\u6700\u5927\u503c\u3001\u7576\u524d\u503c\u3001\u7de9\u5b58\u5927\u5c0f\uff0c\u9084\u662f\u555f\u7528\u5faa\u74b0\u884c\u70ba\uff0cALTER SEQUENCE<\/code> \u90fd\u80fd\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u901a\u904e\u5229\u7528 ALTER SEQUENCE<\/code> \u7684\u5f37\u5927\u529f\u80fd\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u81ea\u5b9a\u7fa9\u548c\u7ba1\u7406 PostgreSQL \u6578\u64da\u5eab\u4e2d\u7684\u5e8f\u5217\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u63a2\u8a0e\u4e86 PostgreSQL \u547d\u4ee4 ALTER SEQUENCE<\/code>\uff0c\u5b83\u5141\u8a31\u60a8\u4fee\u6539\u5e8f\u5217\u7684\u5c6c\u6027\u3002\u6211\u5011\u8a0e\u8ad6\u4e86\u53ef\u4ee5\u4fee\u6539\u7684\u5404\u7a2e\u5c6c\u6027\uff0c\u4f8b\u5982\u91cd\u555f\u5e8f\u5217\u3001\u6539\u8b8a\u589e\u91cf\u3001\u8a2d\u7f6e\u6700\u5c0f\u548c\u6700\u5927\u503c\u3001\u4fee\u6539\u7576\u524d\u503c\u3001\u8abf\u6574\u7de9\u5b58\u5927\u5c0f\u4ee5\u53ca\u555f\u7528\u5faa\u74b0\u3002\u6b32\u4e86\u89e3\u66f4\u591a VPS \u4e3b\u6a5f\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
PostgreSQL \u547d\u4ee4\uff1aAL...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-20351","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20351","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=20351"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20351\/revisions"}],"predecessor-version":[{"id":24405,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20351\/revisions\/24405"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}