{"id":494,"date":"2026-05-06T10:14:16","date_gmt":"2026-05-06T01:14:16","guid":{"rendered":"https:\/\/www.zeronana.net\/?p=494"},"modified":"2026-05-06T15:40:37","modified_gmt":"2026-05-06T06:40:37","slug":"%e3%80%90%e5%88%9d%e5%bf%83%e8%80%85%e5%90%91%e3%81%91%e3%80%91go-postgresql%e6%8e%a5%e7%b6%9a%e3%81%ae%e6%89%8b%e9%a0%86%ef%bd%9cdatabase-sql%e3%81%a7%e5%a7%8b%e3%82%81%e3%82%8bdb%e9%96%8b%e7%99%ba","status":"publish","type":"post","link":"https:\/\/www.zeronana.net\/?p=494","title":{"rendered":"\u3010\u521d\u5fc3\u8005\u5411\u3051\u3011Go PostgreSQL\u63a5\u7d9a\u306e\u624b\u9806\uff5cdatabase\/sql\u3067\u59cb\u3081\u308bDB\u958b\u767a\u5165\u9580"},"content":{"rendered":"\n

Go \u3068 PostgreSQL \u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u9ad8\u6027\u80fd\u306aAPI\u3084Web\u30b5\u30fc\u30d3\u30b9\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002
\u7279\u306bPostgreSQL\u306f\u3001\u5805\u7262\u6027\u30fb\u62e1\u5f35\u6027\u304c\u9ad8\u304f\u3001\u5b9f\u52d9\u3067\u4eba\u6c17\u306e\u9ad8\u3044\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n

\u672c\u8a18\u4e8b\u3067\u306f\u3001Go\u3067PostgreSQL\u3078\u63a5\u7d9a\u3059\u308b\u624b\u9806\u3092\u300c\u5c0e\u5165\u30fbSQL\u5b9f\u884c\u30fb\u5b9f\u52d9\u30dd\u30a4\u30f3\u30c8\u300d\u307e\u3067\u521d\u5fc3\u8005\u5411\u3051\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\n\n\n\n

Go\u3067PostgreSQL\u63a5\u7d9a\u3059\u308b\u6d41\u308c<\/h2>\n\n\n\n

\u57fa\u672c\u306e\u6d41\u308c\ud83d\udc47<\/p>\n\n\n\n

    \n
  1. \u30c9\u30e9\u30a4\u30d0\u5c0e\u5165<\/li>\n\n\n\n
  2. DB\u63a5\u7d9a<\/li>\n\n\n\n
  3. Ping\u78ba\u8a8d<\/li>\n\n\n\n
  4. SQL\u5b9f\u884c<\/li>\n\n\n\n
  5. Close\u51e6\u7406<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n

    PostgreSQL\u30c9\u30e9\u30a4\u30d0\u3092\u5c0e\u5165<\/h2>\n\n\n\n
    go get github.com\/lib\/pq<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u57fa\u672c\u306e\u63a5\u7d9a\u30b3\u30fc\u30c9<\/h2>\n\n\n\n
    package main

    import (
        \"database\/sql\"
        \"log\"

        _ \"github.com\/lib\/pq\"
    )

    func main() {

        connStr := `
            host=localhost
            port=5432
            user=postgres
            password=pass
            dbname=sample
            sslmode=disable
        `

        db, err := sql.Open(\"postgres\", connStr)

        if err != nil {
            log.Fatal(err)
        }

        defer db.Close()

        err = db.Ping()

        if err != nil {
            log.Fatal(err)
        }

        log.Println(\"\u63a5\u7d9a\u6210\u529f\")
    }<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    SELECT\u5b9f\u884c<\/h2>\n\n\n\n
    rows, err := db.Query(
        \"SELECT id, name FROM users\",
    )<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    INSERT\u5b9f\u884c<\/h2>\n\n\n\n
    _, err := db.Exec(
        \"INSERT INTO users(name) VALUES($1)\",
        \"Tomoya\",
    )<\/code><\/pre>\n\n\n\n
    \ud83d\udc49 PostgreSQL\u306f $1<\/code> \u3092\u4f7f\u3046<\/p>\n\n\n\n
    \n\n\n\n
    UPDATE\u5b9f\u884c<\/h2>\n\n\n\n
    _, err := db.Exec(
        \"UPDATE users SET name=$1 WHERE id=$2\",
        \"Taro\",
        1,
    )<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    DELETE\u5b9f\u884c<\/h2>\n\n\n\n
    _, err := db.Exec(
        \"DELETE FROM users WHERE id=$1\",
        1,
    )<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u5b9f\u52d9\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n
    \u2714 defer Close<\/h3>\n\n\n\n
    defer db.Close()<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u2714 \u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb<\/h3>\n\n\n\n
    db.SetMaxOpenConns(10)<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u2714 SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56<\/h3>\n\n\n\n
    db.Query(
        \"SELECT * FROM users WHERE id=$1\",
        id,
    )<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    MySQL\u3068\u306e\u9055\u3044<\/h2>\n\n\n\n
    MySQL<\/p>\n\n\n\n
    \u9805\u76ee<\/th>MySQL<\/th>PostgreSQL<\/th><\/tr><\/thead>
    \u7279\u5fb4<\/td>\u30b7\u30f3\u30d7\u30eb<\/td>\u9ad8\u6a5f\u80fd<\/td><\/tr>
    JSON\u5bfe\u5fdc<\/td>\u25cb<\/td>\u25ce<\/td><\/tr>
    \u62e1\u5f35\u6027<\/td>\u25cb<\/td>\u25ce<\/td><\/tr>
    \u5b9f\u52d9\u7528\u9014<\/td>Web\u7cfb<\/td>\u5927\u898f\u6a21\u958b\u767a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \n\n\n\n
    ORM\uff08GORM\uff09\u3068\u306e\u9023\u643a<\/h2>\n\n\n\n
    GORM<\/p>\n\n\n\n
    gorm.Open(postgres.Open(dsn), &gorm.Config{})<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u5b9f\u52d9\u3067\u306e\u5fdc\u7528<\/h2>\n\n\n\n
      \n
    • REST API<\/li>\n\n\n\n
    • SaaS\u958b\u767a<\/li>\n\n\n\n
    • \u7ba1\u7406\u753b\u9762<\/li>\n\n\n\n
    • \u5927\u898f\u6a21\u30b7\u30b9\u30c6\u30e0<\/li>\n<\/ul>\n\n\n\n
      <\/p>\n\n\n\n
      \n\n\n\n
      \u3088\u304f\u3042\u308b\u5931\u6557<\/h2>\n\n\n\n
      \u274c sslmode\u5fd8\u308c
      \u274c Ping\u672a\u78ba\u8a8d
      \u274c Close\u5fd8\u308c<\/p>\n\n\n\n
      \n\n\n\n
      \u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n
        \n
      • Ping\u78ba\u8a8d<\/li>\n\n\n\n
      • Prepare\u5229\u7528<\/li>\n\n\n\n
      • Pool\u7ba1\u7406<\/li>\n\n\n\n
      • ORM\u3068\u306e\u4f75\u7528<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n
        \ud83d\udca1 \u7d50\u8ad6<\/h2>\n\n\n\n
        \ud83d\udc49
        \u300cGo\u00d7PostgreSQL\u306f\u62e1\u5f35\u6027\u306e\u9ad8\u3044API\u958b\u767a\u306b\u6700\u9069\u300d<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
        Go \u3068 PostgreSQL \u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u9ad8\u6027\u80fd\u306aAPI\u3084Web\u30b5\u30fc\u30d3\u30b9\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002\u7279\u306bPostgreSQL\u306f\u3001\u5805\u7262\u6027\u30fb\u62e1\u5f35 […]<\/p>\n","protected":false},"author":1,"featured_media":495,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[6,7],"class_list":["post-494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-go","tag-go-2","tag-go"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.zeronana.net\/wp-content\/uploads\/2026\/05\/goPostgre.png","_links":{"self":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts\/494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=494"}],"version-history":[{"count":1,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts\/494\/revisions"}],"predecessor-version":[{"id":496,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts\/494\/revisions\/496"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/media\/495"}],"wp:attachment":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}