{"id":207538,"date":"2025-07-08T09:55:00","date_gmt":"2025-07-08T01:55:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207538\/"},"modified":"2025-07-08T09:55:00","modified_gmt":"2025-07-08T01:55:00","slug":"%e5%a6%82%e6%9e%9c-go-sql-db-%e5%85%b3%e9%97%ad%ef%bc%8c%e6%98%af%e5%90%a6%e4%bc%9a%e5%85%b3%e9%97%ad%e4%bb%bb%e4%bd%95%e6%9c%aa%e5%85%b3%e9%97%ad%e7%9a%84%e5%87%86%e5%a4%87%e5%a5%bd%e7%9a%84%e6%9f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207538\/","title":{"rendered":"\u5982\u679c Go sql.DB \u5173\u95ed\uff0c\u662f\u5426\u4f1a\u5173\u95ed\u4efb\u4f55\u672a\u5173\u95ed\u7684\u51c6\u5907\u597d\u7684\u67e5\u8be2\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u679c Go sql.DB \u5173\u95ed\uff0c\u662f\u5426\u4f1a\u5173\u95ed\u4efb\u4f55\u672a\u5173\u95ed\u7684\u51c6\u5907\u597d\u7684\u67e5\u8be2\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-23 14:15:36<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300a\u5982\u679c Go sql.DB \u5173\u95ed\uff0c\u662f\u5426\u4f1a\u5173\u95ed\u4efb\u4f55\u672a\u5173\u95ed\u7684\u51c6\u5907\u597d\u7684\u67e5\u8be2\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

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

\u5728\u4f7f\u7528 database\/sql<\/code> \u7684 go \u7a0b\u5e8f\u4e2d\uff0c\u5f53\u6211 clos\u200b\u200be<\/code> \u6211\u6b63\u5728\u4f7f\u7528\u7684 postgres \u6570\u636e\u5e93\u65f6\uff0c\u662f\u5426\u4f1a\u5173\u95ed\u4efb\u4f55\u672a\u5173\u95ed\u7684\u51c6\u5907\u597d\u7684\u67e5\u8be2\uff1f<\/p>\n

\u6211\u5df2\u5c06\u5176\u7b80\u5316\u4e3a\u4e00\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u4e0d\u9700\u8981 prepare<\/code> \u4f46\u4ecd\u7136\u663e\u793a\u95ee\u9898\uff08\u6211\u76f8\u4fe1\u6211\u53ef\u4ee5\u5c06\u67e5\u8be2\u5b57\u7b26\u4e32\u4f20\u9012\u7ed9 queryrow<\/code> \u5e76\u83b7\u5f97\u9690\u5f0f prepare<\/code>\uff0c\u4f46\u5c06\u5176\u663e\u5f0f\u4fdd\u7559\u5728\u6b64\u5904\uff0c\u4ee5\u4fbf\u6211\u53ef\u4ee5\u95ee\u6211\u7684\u95ee\u9898\uff09\uff1a<\/p>\n

import (\n    \"database\/sql\"\n)\n\n\/\/ Store struct is the postgres\ntype Store struct {\n    pq *sql.DB\n}\n\ntype Info struct {\n    ID      string `json:\"id\"`\n    Name    string `json:\"name\"`\n}\n\nfunc (s *Store) GetInfo(id string) Info {\n    defer s.pq.Close()\n    stmt, err := s.pq.Prepare(`\n            SELECT id, name \n            FROM info \n            WHERE id = $1 LIMIT 1\n            `)\n    if err != nil {\n        return Info{}\n    }\n    var res Info\n    _ = stmt.QueryRow(id).Scan(&res.ID, &res.Name)\n    return res\n}<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u4ece\u6280\u672f\u4e0a\u8bb2\uff0cdatabase\/sql<\/code> \u5728 db \u6216 dc \u5173\u95ed\u65f6\u4e0d\u4f1a\u4e3a\u60a8\u6267\u884c\u6b64\u64cd\u4f5c\u3002\u6b64\u5916\uff0c\u6211\u8ba4\u4e3a\u5f53\u4f60\u7684\u7a0b\u5e8f\u9000\u51fa\u65f6\uff0c\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u6e05\u7406\u540e\u7aef\u5185\u5b58\uff0c\u4f46 postgresql \u4e5f\u4e0d\u4f1a\u6e05\u7406\u5b83……<\/p>\n<\/p>\n
\u5982\u679c\u60a8\u83b7\u5f97\u9690\u5f0f\u201c\u51c6\u5907\u201d\uff0c\u90a3\u4e48 database\/sql<\/code> \u5c06\u4e3a\u60a8\u5904\u7406\u6e05\u7406\u5de5\u4f5c\uff0c\u4f46\u5982\u679c\u60a8\u4e00\u904d\u53c8\u4e00\u904d\u5730\u8fd0\u884c\u8fd9\u4e9b\u67e5\u8be2\uff0c\u6548\u7387\u4f1a\u964d\u4f4e\uff0c\u56e0\u6b64\u6211\u5f3a\u70c8\u5efa\u8bae\u60a8\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u81ea\u884c\u6e05\u7406\uff1a<\/p>\n
defer stmt.Close()<\/pre>\n
\u6216\u7c7b\u4f3c\u7684\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300a\u5982\u679c Go sql.DB \u5173\u95ed\uff0c\u662f\u5426\u4f1a\u5173\u95ed\u4efb\u4f55\u672a\u5173\u95ed\u7684\u51c6\u5907\u597d\u7684\u67e5\u8be2\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\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-207538","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207538","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=207538"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207538\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}