{"id":41566,"date":"2023-05-26T04:54:17","date_gmt":"2022-12-06T19:09:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90postgresql%e3%80%91%e6%95%b0%e6%8d%ae%e5%ae%9a%e4%b9%89%e8%af%ad%e8%a8%80%ef%bc%8c%e6%95%b0%e6%8d%ae%e6%93%8d%e4%bd%9c%e8%af%ad%e8%a8%80\/"},"modified":"2024-04-30T05:59:03","modified_gmt":"2024-04-29T21:59:03","slug":"%e3%80%90postgresql%e3%80%91%e6%95%b0%e6%8d%ae%e5%ae%9a%e4%b9%89%e8%af%ad%e8%a8%80%ef%bc%8c%e6%95%b0%e6%8d%ae%e6%93%8d%e4%bd%9c%e8%af%ad%e8%a8%80","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90postgresql%e3%80%91%e6%95%b0%e6%8d%ae%e5%ae%9a%e4%b9%89%e8%af%ad%e8%a8%80%ef%bc%8c%e6%95%b0%e6%8d%ae%e6%93%8d%e4%bd%9c%e8%af%ad%e8%a8%80\/","title":{"rendered":"\u3010PostgreSQL\u3011\u6570\u636e\u5b9a\u4e49\u8bed\u8a00\uff0c\u6570\u636e\u64cd\u4f5c\u8bed\u8a00"},"content":{"rendered":"

\u751f\u6210\u6587\u4ef6<\/h1>\n
\r\nCREATE<\/span> TABLE<\/span> public<\/span>.<\/span>member<\/span>\r\n(<\/span>\r\n    id<\/span> integer<\/span> NOT<\/span> NULL<\/span>,<\/span>\r\n    name<\/span> \"char\"<\/span> NOT<\/span> NULL<\/span>,<\/span>\r\n    gender<\/span> gender<\/span>,<\/span>\r\n    CONSTRAINT<\/span> member_pkey<\/span> PRIMARY<\/span> KEY<\/span> (<\/span>id<\/span>)<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u622a\u65ad<\/h2>\n
\u5220\u9664\u6240\u6709\u7684\u8868\u8bb0\u5f55<\/p>\n
\r\nTRUNCATE<\/span> TABLE<\/span>  table_name<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664\u6587\u4ef6<\/h1>\n
\r\nDELETE<\/span> FROM<\/span> public<\/span>.<\/span>member<\/span>\r\n    WHERE<\/span> <<\/span>condition<\/span>><\/span>;<\/span>\r\n<\/code><\/pre>\n
\u63d2\u5165\u6587\u4ef6<\/h1>\n
\r\nINSERT<\/span> INTO<\/span> public<\/span>.<\/span>member<\/span>(<\/span>\r\n    id<\/span>,<\/span> name<\/span>,<\/span> gender<\/span>)<\/span>\r\n    VALUES<\/span> (<\/span>?<\/span>,<\/span> ?<\/span>,<\/span> ?<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u66f4\u65b0\u6587\u4ef6<\/h1>\n
\r\nUPDATE<\/span> public<\/span>.<\/span>member<\/span>\r\n    SET<\/span> id<\/span>=?<\/span>,<\/span> name<\/span>=?<\/span>,<\/span> gender<\/span>=?<\/span>\r\n    WHERE<\/span> <<\/span>condition<\/span>><\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5728\u521b\u5efa\u8868\u683c\u4e4b\u540e\u8fdb\u884c\u8bbe\u7f6e\u6dfb\u52a0\u6216\u66f4\u6539\u3002<\/h1>\n
\u66f4\u6539\u684c\u5b50<\/h2>\n
\u53d8\u66f4\u8868\u683c\u540d\u79f0<\/h3>\n
\r\nALTER<\/span> TABLE<\/span> public<\/span>.<\/span>\"\u5909\u66f4\u524d\u306e\u30c6\u30fc\u30d6\u30eb\u540d\"<\/span>\r\n    RENAME<\/span> TO<\/span> \u5909\u66f4\u5f8c\u306e\u30c6\u30fc\u30d6\u30eb\u540d<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u4fee\u6539\u5217<\/h2>\n
\u6dfb\u52a0\u4e3b\u952e\u7ea6\u675f<\/h3>\n
\r\nALTER<\/span> TABLE<\/span> public<\/span>.<\/span>party<\/span>\r\n    ADD<\/span> PRIMARY<\/span> KEY<\/span> (<\/span>name<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664\u4e3b\u952e\u7ea6\u675f<\/h3>\n
\r\nALTER<\/span> TABLE<\/span> public<\/span>.<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span> DROP<\/span> CONSTRAINT<\/span> \u30c6\u30fc\u30d6\u30eb\u540d<\/span>_pkey<\/span>(<\/span>\u4e3b\u30ad\u30fc\u5236\u7d04\u540d<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6dfb\u52a0\u975e\u7a7a\u7ea6\u675f<\/h3>\n
\r\nALTER<\/span>  TABLE<\/span> table_name<\/span>\r\nALTER<\/span> COLUMN<\/span> column_name<\/span> SET<\/span> NOT<\/span> NULL<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u589e\u52a0\u5916\u952e\u7ea6\u675f<\/h3>\n
ALTER<\/span> TABLE<\/span>  \u30c6\u30fc\u30d6\u30eb\u540d<\/span> ADD<\/span> FOREIGN<\/span> KEY<\/span> (<\/span>\u5217\u540d<\/span>)<\/span> REFERENCES<\/span> \u5916\u90e8\u30c6\u30fc\u30d6\u30eb\u540d<\/span> (<\/span>\u5916\u90e8\u30c6\u30fc\u30d6\u30eb\u306e\u5217\u540d<\/span>)<\/span> ON<\/span> DELETE<\/span> CASCADE<\/span>;<\/span>\r\n\r\n<\/code><\/pre>\n
\u6dfb\u52a0\u9ed8\u8ba4\u503c<\/h3>\n
\r\nalter<\/span> table<\/span> items<\/span> alter<\/span> column<\/span> available<\/span> set<\/span> default<\/span> true<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u4fee\u6539\u5f62\u72b6<\/h3>\n
\r\nALTER<\/span> TABLE<\/span> public<\/span>.<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span>\r\n    ALTER<\/span> COLUMN<\/span> \u5217\u540d<\/span> TYPE<\/span> character<\/span> varying<\/span> (<\/span>1<\/span>);<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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