{"id":41492,"date":"2023-06-30T21:10:47","date_gmt":"2023-01-28T05:50:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8postgresql%e4%b8%ad%e7%9a%84sequence%e7%9a%84%e6%96%b9%e6%b3%95\/"},"modified":"2024-01-15T11:00:02","modified_gmt":"2024-01-15T03:00:02","slug":"%e4%bd%bf%e7%94%a8postgresql%e4%b8%ad%e7%9a%84sequence%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8postgresql%e4%b8%ad%e7%9a%84sequence%e7%9a%84%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u4f7f\u7528PostgreSQL\u4e2d\u7684sequence\u7684\u65b9\u6cd5"},"content":{"rendered":"
\n
..\/<\/a><\/div>\n<\/div>\n

\u5728PostgreSQL\u4e2d\uff0c\u4e0e\u5176\u5728\u6bcf\u6b21\u63d2\u5165\u64cd\u4f5c\u4e2d\u4f7f\u7528nextval()\u51fd\u6570\uff0c\u4e0d\u5982\u5728\u521b\u5efa\u8868\u65f6\u4f7f\u7528\u9ed8\u8ba4\u503cdefault\u6765\u5b9a\u4e49nextval()\u51fd\u6570\u66f4\u4e3a\u9ad8\u6548\u3002<\/p>\n

\u5728\u63d2\u5165\u6570\u636e\u65f6\u660e\u786e\u5730\u4f7f\u7528 nextval()\u3002<\/h2>\n
create<\/span> sequence<\/span> auto_num<\/span>;<\/span>\r\ncreate<\/span> table<\/span> dummy<\/span> (<\/span>seq_no<\/span> integer<\/span> primary<\/span> key<\/span>,<\/span> name<\/span> varchar<\/span>(<\/span>20<\/span>));<\/span>\r\ninsert<\/span> into<\/span> dummy<\/span> (<\/span>seq_no<\/span>,<\/span>name<\/span>)<\/span> values<\/span> (<\/span>nextval<\/span>(<\/span>'auto_num'<\/span>),<\/span>'abc'<\/span>);<\/span>\r\ninsert<\/span> into<\/span> dummy<\/span> (<\/span>seq_no<\/span>,<\/span>name<\/span>)<\/span> values<\/span> (<\/span>nextval<\/span>(<\/span>'auto_num'<\/span>),<\/span>'123'<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5728\u521b\u5efa\u8868\u65f6\uff0c\u9ed8\u8ba4\u5b9a\u4e49nextval\uff08\uff09\uff1a<\/h2>\n
create<\/span> sequence<\/span> auto_num<\/span>;<\/span>\r\ncreate<\/span> table<\/span> dummy<\/span> (<\/span>\r\n  seq_no<\/span> integer<\/span> default<\/span> nextval<\/span>(<\/span>'auto_num'<\/span>)<\/span> primary<\/span> key<\/span>,<\/span> \r\n  name<\/span> varchar<\/span>(<\/span>20<\/span>)<\/span>\r\n);<\/span>\r\ninsert<\/span> into<\/span> dummy<\/span> (<\/span>name<\/span>)<\/span> values<\/span> (<\/span>'abc'<\/span>);<\/span>\r\ninsert<\/span> into<\/span> dummy<\/span> (<\/span>name<\/span>)<\/span> values<\/span> (<\/span>'123'<\/span>);<\/span>\r\n<\/code><\/pre>\n
\n
..\/<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
..\/ \u5728PostgreSQL\u4e2d\uff0c\u4e0e\u5176\u5728\u6bcf\u6b21\u63d2\u5165\u64cd\u4f5c\u4e2d\u4f7f\u7528nextval()\u51fd\u6570\uff0c\u4e0d\u5982\u5728\u521b\u5efa\u8868\u65f6\u4f7f\u7528\u9ed8\u8ba4\u503cde […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41492","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528PostgreSQL\u4e2d\u7684sequence\u7684\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528postgresql\u4e2d\u7684sequence\u7684\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528PostgreSQL\u4e2d\u7684sequence\u7684\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"..\/ \u5728PostgreSQL\u4e2d\uff0c\u4e0e\u5176\u5728\u6bcf\u6b21\u63d2\u5165\u64cd\u4f5c\u4e2d\u4f7f\u7528nextval()\u51fd\u6570\uff0c\u4e0d\u5982\u5728\u521b\u5efa\u8868\u65f6\u4f7f\u7528\u9ed8\u8ba4\u503cde […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528postgresql\u4e2d\u7684sequence\u7684\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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