{"id":207121,"date":"2025-07-08T09:24:55","date_gmt":"2025-07-08T01:24:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207121\/"},"modified":"2025-07-08T09:24:55","modified_gmt":"2025-07-08T01:24:55","slug":"%e4%b8%8e-postgresql-%e6%a8%a1%e5%bc%8f%e8%bf%9e%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207121\/","title":{"rendered":"\u4e0e postgreSQL \u6a21\u5f0f\u8fde\u63a5"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4e0e postgreSQL \u6a21\u5f0f\u8fde\u63a5<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-20 10:06:36<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5bf9\u4e8e\u4e00\u4e2aGolang\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300a\u4e0e postgreSQL \u6a21\u5f0f\u8fde\u63a5\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6b63\u5728\u5bfb\u627e\u8fde\u63a5\u5e76\u67e5\u8be2 postgresql\u3002\u4f46\u6211\u53ea\u60f3\u8fde\u63a5\u5230\u7279\u5b9a\u7684\u67b6\u6784<\/strong>\u3002<\/p>\n

\u6839\u636e\u6587\u6863\uff08jdbc<\/strong>\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<\/p>\n

jdbc:postgresql:\/\/localhost:5432\/mydatabase?searchpath=myschema<\/pre>\n
\u6216\u66f4\u65b0<\/strong> \u4ece 9.4 \u5f00\u59cb\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u65b0\u7684 currentschema \u53c2\u6570\u6307\u5b9a url\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
jdbc:postgresql:\/\/localhost:5432\/mydatabase?currentschema=myschema<\/pre>\n
\u4f46\u6211\u65e0\u6cd5\u4f7f\u7528 golang<\/strong> sql \u9a71\u52a8\u7a0b\u5e8f\u505a\u5230\u8fd9\u4e00\u70b9\uff1b<\/p>\n
\u6839\u636e\u6587\u6863\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528 set search_path to myschema,public; <\/code> \u4f46\u6211\u53ea\u60f3\u5728\u521d\u59cb\u5316\u671f\u95f4\u58f0\u660e\u4e00\u6b21\uff0c\u4f46\u6211\u8ba4\u4e3a\u6bcf\u6b21\u65b0\u8fde\u63a5\u90fd\u9700\u8981\u6267\u884c\u6b64\u64cd\u4f5c\u3002 <\/p>\n
\u6b64\u5916\uff0c\u6211\u6b63\u5728\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff0c\u8bf7\u5e2e\u52a9\u6211\u786e\u5b9a\u8981\u4f20\u9012\u7ed9\u6b64\u4ee3\u7801\u7684\u6b63\u786e\u53c2\u6570\uff0c\u4ee5\u4fbf\u4ec5\u4e0e\u67b6\u6784\u8fde\u63a5<\/p>\n
db, err := sql.Open(\"postgres\", `dbname=`+s.settings.Database+\n` user=`+s.settings.Username+` password=`+s.settings.Password+\n` host=`+s.settings.Url+` sslmode=disable`)<\/pre>\n
\u6dfb\u52a0 currentschema=myschema<\/code> \u6216 searchpath=myschema<\/code> \u4e0d\u8d77\u4f5c\u7528\uff01<\/p>\n
\u6709\u6ca1\u6709\u529e\u6cd5\u8ba9\u6211\u53ea\u80fd\u8fde\u63a5\u5230 go \u4e2d\u7684\u7279\u5b9a\u6570\u636e\u5e93\u6a21\u5f0f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u60a8\u5e94\u8be5\u5c06 search_path=myschema<\/code> \u6dfb\u52a0\u5230 datasourcename<\/code><\/p>\n
\u9644\u6ce8\u6700\u597d\u4f7f\u7528 fmt.sprintf(\"host=%s port=%d dbname=%s user=%s password='%s' sslmode=disable search_path=%s\", ...)<\/code> \u800c\u4e0d\u662f ``+`` <\/code><\/p>\n
\u8bbe\u7f6esearch_path\u662f\u5bf9\u7684\uff0c\u4f60\u5c31\u505a\u4e00\u6b21\u3002\u5373\uff1a<\/p>\n
db, err := sql.Open(\"postgres\",\n    \"host=localhost dbname=Test sslmode=disable user=postgres password=secret\")\nif err != nil {\n   log.Fatal(\"cannot connect ...\")\n}\ndefer db.Close()\ndb.Exec(`set search_path='mySchema'`)\n\nrows, err := db.Query(`select blah,blah2 from myTable`)\n...<\/pre>\n
\u4eca\u5929\u5173\u4e8e\u300a\u4e0e postgreSQL \u6a21\u5f0f\u8fde\u63a5\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207121","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207121","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=207121"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207121\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}