{"id":2186,"date":"2021-03-24T20:59:27","date_gmt":"2021-03-24T11:59:27","guid":{"rendered":"https:\/\/www.choco.org.uk\/chocodb\/?p=2186"},"modified":"2021-03-24T21:07:30","modified_gmt":"2021-03-24T12:07:30","slug":"%e5%9b%bd%e7%94%a3%e3%81%ae%e9%9b%84postgresql%e3%82%92%e4%bd%bf%e3%81%84%e3%81%93%e3%81%aa%e3%81%9d%e3%81%86%e3%80%80part4-materialized-view","status":"publish","type":"post","link":"https:\/\/www.choco.org.uk\/chocodb\/?p=2186","title":{"rendered":"\u56fd\u7523\u306e\u96c4PostgreSQL\u3092\u4f7f\u3044\u3053\u306a\u305d\u3046\u3000Part4 MATERIALIZED VIEW"},"content":{"rendered":"

\"\u3053\u306e\u30da\u30fc\u30b8\u3092\u5370\u5237\u3057\u307e\u3059\u3002\"<\/a> \u3053\u306e\u30da\u30fc\u30b8\u3092\u5370\u5237\u3057\u307e\u3059\u3002<\/a>
\n\u524d\u306e\u30ed\u30fc\u30eb\u304c\u7d42\u308f\u3063\u3066\u306a\u3044\u306e\u306b\u3044\u304d\u306a\u308aVIEW\u3067\u3059\u304c\u3001\u3053\u308c\u3092\u8a9e\u3089\u305a\u3057\u3066PostgreSQL\u3092\u8a9e\u308b\u4e8b\u306a\u304b\u308c\uff01<\/p>\n

\u901a\u5e38\u306eVIEW\u306fSQL\u3068\u3057\u3066\u3001\u4f55\u304b\u304c\u5b9f\u884c\u3055\u308c\u308b\u5ea6\u306b\u305d\u306e\u7d50\u679c\u3092\u8868\u793a\u3057\u307e\u3059\u304c\u3053\u3044\u3064\u306f\u5e38\u306b\u540c\u3058\u60c5\u5831\u3057\u304b\u8fd4\u3057\u307e\u305b\u3093\u3002
\nJOIN\u3057\u305f\u7d50\u679c\u3092\u4fdd\u6301\u3057\u7d9a\u3051\u308bVIEW\u3067\u3059\u3002<\/p>\n

\u3088\u3063\u3066\u3001\u3053\u306eVIEW\u306b\u5bfe\u3059\u308b\u691c\u7d22\u901f\u5ea6\u306f\u901f\u3044\u3067\u3059\u3057\u3001\u4ed6\u306e\u30c6\u30fc\u30d6\u30eb\u3001VIEW\u306b\u5bfe\u3057\u3066\u4f4e\u8ca0\u8377\u3067\u3059\u3002
\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u7ba1\u7406\u3059\u308b\u30c7\u30fc\u30bf\u304c\u5c11\u306a\u3044\u3001\u691c\u7d22\u6761\u4ef6\u304c\u5c11\u306a\u3044\u7b49\u306e\u5834\u5408\u306f\u4e0d\u8981\u3067\u3059\u304c\u4e2d\u898f\u6a21\u4ee5\u4e0a\u306e\u958b\u767a\u306b\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n

\u4f5c\u6210\u65b9\u6cd5\u306f\u3001\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n

\uff03CREATE MATERIALIZED VIEW myview<\/span> AS SELECT * FROM mytable<\/span>;<\/p>\n

AS\u53e5\u3067\u5143\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u62bd\u51fa\u3057\u3001\u4f5c\u6210\u3057\u305fVIEW\u306b\u540d\u524d\u3092\u4ed8\u3051\u308b\u3060\u3051\u3067\u3059\u3002
\n\u4e0a\u8a18\u306f\u3001\u30c6\u30fc\u30d6\u30eb\uff08mytalbe<\/span>\uff09\u304b\u3089\u30bb\u30ec\u30af\u30c8\u3057\u305f\u7d50\u679c\u3092\u30de\u30c6\u30ea\u30a2\u30e9\u30a4\u30ba\u30c9\u30d3\u30e5\u30fc\uff08myview<\/span>\uff09\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u30c7\u30fc\u30bf\u3092\u66f4\u65b0\u3059\u308b\u6642\u306f\u5c02\u7528\u306e\u30b3\u30de\u30f3\u30c9\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n

\uff03REFRESH MATERIALIZED VIEW myview<\/span>;<\/p>\n

\u4e0a\u8a18\u306e\u30b3\u30de\u30f3\u30c9\u3092\u6bce\u65e5\u591c\u9593\u30d0\u30c3\u30c1\u3067\u6df1\u591c2\u6642\u9803\u306b\u52d5\u304b\u3059\u7b49\u304c\u901a\u5e38\u904b\u7528\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3053\u306eVIEW\u306f\u3001\u3042\u304f\u307e\u3067\u901f\u3055<\/span><\/strong>\u3092\u6c42\u3081\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u524d\u306e\u30ed\u30fc\u30eb\u304c\u7d42\u308f\u3063\u3066\u306a\u3044\u306e\u306b\u3044\u304d\u306a\u308aVIEW\u3067\u3059\u304c\u3001\u3053\u308c\u3092\u8a9e\u3089\u305a\u3057\u3066PostgreSQL\u3092\u8a9e\u308b\u4e8b\u306a\u304b\u308c\uff01 \u901a\u5e38\u306eVIEW\u306fSQL\u3068\u3057\u3066\u3001\u4f55\u304b\u304c\u5b9f\u884c\u3055\u308c\u308b\u5ea6\u306b\u305d\u306e\u7d50\u679c\u3092\u8868\u793a\u3057\u307e\u3059\u304c\u3053\u3044\u3064\u306f\u5e38\u306b\u540c\u3058\u60c5\u5831\u3057\u304b\u8fd4\u3057\u307e\u305b\u3093\u3002 JO […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[10],"tags":[142,48,141],"class_list":["post-2186","post","type-post","status-publish","format-standard","hentry","category-postgresql","tag-materialized","tag-postgresql","tag-view"],"_links":{"self":[{"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=\/wp\/v2\/posts\/2186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2186"}],"version-history":[{"count":4,"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=\/wp\/v2\/posts\/2186\/revisions"}],"predecessor-version":[{"id":2194,"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=\/wp\/v2\/posts\/2186\/revisions\/2194"}],"wp:attachment":[{"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.choco.org.uk\/chocodb\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}