{"id":537,"date":"2010-02-06T10:28:10","date_gmt":"2010-02-06T01:28:10","guid":{"rendered":"http:\/\/www.lancard.com\/blog\/?p=537"},"modified":"2025-03-12T11:31:55","modified_gmt":"2025-03-12T02:31:55","slug":"postgresql%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/www.lancard.com\/blog\/2010\/02\/06\/postgresql%e3%83%a1%e3%83%a2\/","title":{"rendered":"PostgreSQL\u30e1\u30e2"},"content":{"rendered":"

\u591a\u5206\u4f7f\u308f\u306a\u3044\u30e1\u30e2\u3002<\/p>\n

\u30fb\u30ab\u30e9\u30e0\u540dcolumn_name\u306e\u3042\u308b\u30c6\u30fc\u30d6\u30eb\u3092\u63a2\u3059\u3002
\n\u00a0select t.relname,c.attname,format_type(c.atttypid, c.atttypmod) from pg_attribute as c
\n\u00a0inner join pg_stat_user_tables as t on(c.attrelid = t.relid)
\n\u00a0where attname = 'column_name';<\/p>\n

\u30fb\u30c6\u30fc\u30d6\u30eb\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u30b5\u30a4\u30ba\u3092\u78ba\u8a8d\u3059\u308b\uff08\u30d6\u30ed\u30c3\u30af\u30b5\u30a4\u30ba*\u30d6\u30ed\u30c3\u30af\u6570\uff09\u3002
\n\u00a0SELECT tablename,pg_relation_size(tablename::text) from pg_tables where tableowner != 'postgres';<\/p>\n

\u00a0SELECT indexname,pg_relation_size(indexname::text) as indexsize from pg_indexes where schemaname != 'pg_catalog';<\/p>\n

\u30fb\u4eca\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u30c6\u30fc\u30d6\u30eb\u3092\u8abf\u3079\u308b\u3002
\n\u00a0SELECT\u00a0relname from pg_stat_all_tables where relid in(select relation from pg_locks) and schemaname != 'pg_catalog';<\/p>\n\"Facebook\"<\/a>\"twitter\"<\/a>\"linkedin\"<\/a>\"tumblr\"<\/a>\"mail\"<\/a>","protected":false},"excerpt":{"rendered":"

\u591a\u5206\u4f7f\u308f\u306a\u3044\u30e1\u30e2\u3002 \u30fb\u30ab\u30e9\u30e0\u540dcolumn_name\u306e\u3042\u308b\u30c6\u30fc\u30d6\u30eb\u3092\u63a2\u3059\u3002 \u00a0select t.relname,c.attname,format_type(c.atttypid, c.atttypmod) from pg […]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[135],"class_list":["post-537","post","type-post","status-publish","format-standard","hentry","category-1","tag-postgresql"],"_links":{"self":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/comments?post=537"}],"version-history":[{"count":8,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/537\/revisions"}],"predecessor-version":[{"id":4765,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/537\/revisions\/4765"}],"wp:attachment":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/media?parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/categories?post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/tags?post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}