{"id":96412,"date":"2024-10-20T09:12:17","date_gmt":"2024-10-20T01:12:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96412\/"},"modified":"2024-10-20T09:12:18","modified_gmt":"2024-10-20T01:12:18","slug":"pg%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa%e5%a2%9eid%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95%e5%8f%8a%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af%e8%a7%a3%e6%9e%90-pg%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96412\/","title":{"rendered":"PG\u6578\u64da\u5eab\u81ea\u589eID\u7684\u5be6\u73fe\u65b9\u6cd5\u53ca\u61c9\u7528\u5834\u666f\u89e3\u6790 (pg\u6578\u64da\u5eab\u81ea\u589eid)"},"content":{"rendered":"

PG\u6578\u64da\u5eab\u81ea\u589eID\u7684\u5be6\u73fe\u65b9\u6cd5\u53ca\u61c9\u7528\u5834\u666f\u89e3\u6790<\/h1>\n

\u5728\u73fe\u4ee3\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u81ea\u589eID\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u689d\u8a18\u9304\u7684\u60c5\u6cc1\u4e0b\u3002PostgreSQL\uff08\u7c21\u7a31PG\uff09\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5be6\u73fe\u81ea\u589eID\u7684\u65b9\u6cd5\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0ePG\u6578\u64da\u5eab\u81ea\u589eID\u7684\u5be6\u73fe\u65b9\u6cd5\u53ca\u5176\u61c9\u7528\u5834\u666f\u3002<\/p>\n

\u81ea\u589eID\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u81ea\u589eID\u662f\u6307\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6bcf\u7576\u63d2\u5165\u4e00\u689d\u65b0\u8a18\u9304\u6642\uff0c\u7cfb\u7d71\u81ea\u52d5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6574\u6578ID\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u80fd\u5920\u4fdd\u8b49ID\u7684\u552f\u4e00\u6027\uff0c\u9084\u80fd\u7c21\u5316\u6578\u64da\u63d2\u5165\u7684\u904e\u7a0b\u3002\u81ea\u589eID\u901a\u5e38\u7528\u65bc\u4e3b\u9375\uff0c\u65b9\u4fbf\u6578\u64da\u7684\u67e5\u8a62\u548c\u7ba1\u7406\u3002<\/p>\n

PG\u6578\u64da\u5eab\u4e2d\u81ea\u589eID\u7684\u5be6\u73fe\u65b9\u6cd5<\/h2>\n

1. \u4f7f\u7528SERIAL\u985e\u578b<\/h3>\n

\u5728PostgreSQL\u4e2d\uff0c\u6700\u5e38\u898b\u7684\u81ea\u589eID\u5be6\u73fe\u65b9\u5f0f\u662f\u4f7f\u7528SERIAL\u985e\u578b\u3002\u7576\u4f60\u5728\u5275\u5efa\u8868\u6642\uff0c\u53ef\u4ee5\u5c07\u67d0\u4e00\u5217\u5b9a\u7fa9\u70baSERIAL\uff0c\u9019\u6a23\u6bcf\u6b21\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0c\u8a72\u5217\u7684\u503c\u6703\u81ea\u52d5\u589e\u52a0\u3002<\/p>\n

CREATE TABLE users (\n    id SERIAL PRIMARY KEY,\n    username VARCHAR(50) NOT NULL\n);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576\u63d2\u5165\u65b0\u7528\u6236\u6642\uff0cid\u5217\u6703\u81ea\u52d5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6574\u6578\u503c\u3002<\/p>\n
2. \u4f7f\u7528BIGSERIAL\u985e\u578b<\/h3>\n
\u5982\u679c\u9810\u671f\u9700\u8981\u7684ID\u6578\u91cf\u975e\u5e38\u9f90\u5927\uff0c\u53ef\u4ee5\u4f7f\u7528BIGSERIAL\u985e\u578b\u3002\u9019\u500b\u985e\u578b\u7684\u7bc4\u570d\u66f4\u5927\uff0c\u9069\u5408\u9700\u8981\u5927\u91cf\u8a18\u9304\u7684\u61c9\u7528\u5834\u666f\u3002<\/p>\n
CREATE TABLE orders (\n    order_id BIGSERIAL PRIMARY KEY,\n    product_name VARCHAR(100) NOT NULL\n);\n<\/code><\/pre>\n
3. \u4f7f\u7528SEQUENCE<\/h3>\n
\u9664\u4e86SERIAL\u548cBIGSERIAL\uff0cPostgreSQL\u9084\u652f\u6301\u4f7f\u7528SEQUENCE\u4f86\u5be6\u73fe\u81ea\u589eID\u3002\u9019\u7a2e\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\uff0c\u56e0\u70ba\u4f60\u53ef\u4ee5\u624b\u52d5\u63a7\u5236\u5e8f\u5217\u7684\u589e\u9577\u65b9\u5f0f\u3002<\/p>\n
CREATE SEQUENCE user_id_seq START 1;\nCREATE TABLE users (\n    id INTEGER DEFAULT nextval('user_id_seq') PRIMARY KEY,\n    username VARCHAR(50) NOT NULL\n);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u901a\u904e\u8abf\u7528nextval\u51fd\u6578\u4f86\u7372\u53d6\u4e0b\u4e00\u500bID\u3002<\/p>\n
\u81ea\u589eID\u7684\u61c9\u7528\u5834\u666f<\/h2>\n
1. \u7528\u6236\u7ba1\u7406\u7cfb\u7d71<\/h3>\n
\u5728\u7528\u6236\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u81ea\u589eID\u53ef\u4ee5\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u4f4d\u7528\u6236\uff0c\u65b9\u4fbf\u9032\u884c\u67e5\u8a62\u548c\u7ba1\u7406\u3002\u4f8b\u5982\uff0c\u7576\u7528\u6236\u8a3b\u518a\u6642\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u7528\u6236ID\uff0c\u9019\u6a23\u5728\u5f8c\u7e8c\u7684\u64cd\u4f5c\u4e2d\u5c31\u53ef\u4ee5\u901a\u904e\u9019\u500bID\u4f86\u9032\u884c\u7528\u6236\u7684\u67e5\u8a62\u548c\u66f4\u65b0\u3002<\/p>\n
2. \u96fb\u5b50\u5546\u52d9\u5e73\u53f0<\/h3>\n
\u5728\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u81ea\u589eID\u53ef\u4ee5\u7528\u65bc\u8a02\u55ae\u7ba1\u7406\u3002\u6bcf\u4e00\u7b46\u8a02\u55ae\u90fd\u6703\u6709\u4e00\u500b\u552f\u4e00\u7684\u8a02\u55aeID\uff0c\u9019\u6a23\u53ef\u4ee5\u65b9\u4fbf\u5730\u8ffd\u8e64\u6bcf\u4e00\u7b46\u4ea4\u6613\u7684\u72c0\u614b\u548c\u6b77\u53f2\u8a18\u9304\u3002<\/p>\n
3. \u65e5\u8a8c\u7cfb\u7d71<\/h3>\n
\u5728\u65e5\u8a8c\u7cfb\u7d71\u4e2d\uff0c\u81ea\u589eID\u53ef\u4ee5\u7528\u4f86\u6a19\u8b58\u6bcf\u4e00\u689d\u65e5\u8a8c\u8a18\u9304\uff0c\u9019\u6a23\u5728\u5206\u6790\u548c\u67e5\u8a62\u65e5\u8a8c\u6642\uff0c\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u5230\u7279\u5b9a\u7684\u8a18\u9304\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
PG\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u5be6\u73fe\u81ea\u589eID\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528SERIAL\u3001BIGSERIAL\u548cSEQUENCE\u7b49\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u4fdd\u8b49ID\u7684\u552f\u4e00\u6027\uff0c\u9084\u80fd\u7c21\u5316\u6578\u64da\u7684\u63d2\u5165\u904e\u7a0b\u3002\u81ea\u589eID\u5728\u7528\u6236\u7ba1\u7406\u7cfb\u7d71\u3001\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u548c\u65e5\u8a8c\u7cfb\u7d71\u7b49\u591a\u7a2e\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u767c\u63ee\u8457\u91cd\u8981\u4f5c\u7528\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u81ea\u589eID\u5be6\u73fe\u65b9\u5f0f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u61c9\u7528\uff0c\u4eab\u53d7\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22PG\u6578\u64da\u5eab\u81ea\u589eID\u7684\u5be6\u73fe\u65b9\u6cd5\u53ca\u5176\u61c9\u7528\u5834\u666f\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u552f\u4e00\u6a19\u8b58\u7b26\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-96412","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96412","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=96412"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96412\/revisions"}],"predecessor-version":[{"id":96413,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96412\/revisions\/96413"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}