{"id":1755,"date":"2013-04-16T17:20:16","date_gmt":"2013-04-16T08:20:16","guid":{"rendered":"http:\/\/www23.atpages.jp\/~inoni\/?p=1755"},"modified":"2017-10-20T17:36:04","modified_gmt":"2017-10-20T08:36:04","slug":"postgresql-8%e6%a1%81%e6%97%a5%e4%bb%98%e3%81%ae%e6%97%a5%e4%bb%98%e5%8a%a0%e7%ae%97","status":"publish","type":"post","link":"http:\/\/anada.cloudfree.jp\/?p=1755","title":{"rendered":"PostgreSQL 8\u6841\u65e5\u4ed8\u306e\u65e5\u4ed8\u52a0\u7b97"},"content":{"rendered":"

8\u6841\u3067\u65e5\u4ed8\u3092\u8868\u3057\u3066\u3044\u308b\u3068\u304d\u306e\u65e5\u4ed8\u8a08\u7b97\u306b\u3064\u3044\u3066<\/p>\n

\u4e0b\u306e\u4f8b\u3067\u306f\u30018\u6841\u65e5\u4ed8\u306e\u3068\u3053\u308d\u3092\u6587\u5b57\u5217\u306b\u3057\u3066\u3044\u308b\u304c
\n\u3000COALESCE(TO_CHAR(20120921,’99999999′),’99991231′)
\n\u3068\u304b\u7f6e\u304d\u304b\u3048\u3066\u3084\u308c\u3070\u3001\u6570\u5024\u3067\u3082\u8ee2\u7528\u3067\u304d\u308b\u3002<\/p>\n

——————————————<\/p>\n

SELECT to_char(to_timestamp(‘20120921′,’YYYYMMDD’) + ’20 days’,’YYYYMMDD’) as add_date;<\/strong><\/p>\n

\u3068\u3059\u308b\u3068\u3001\u7d50\u679c\u306f “20121011” \u3068\u8fd4\u3063\u3066\u304f\u308b\u3002<\/p>\n

SELECT to_char(to_timestamp(‘20120921′,’YYYYMMDD’) + ’20 days’,’YYYYMM01′) as add_date;<\/strong><\/p>\n

\u3068\u3059\u308b\u3068\u3001\u7d50\u679c\u306f “20121001” \u3068\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u6708\u521d\u3081\u306e\u65e5\u4ed8\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n

\u8981\u306f\u3001TO_TIMESTAMP<\/strong>\u30e1\u30bd\u30c3\u30c9\u3067\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u578b\u306b\u3057\u3066\u3084\u308b\u3053\u3068\u306e\u3088\u3046\u3060\u3002
\nTO_DATE\u3067\u306f\u8a08\u7b97\u306f\u3067\u304d\u306a\u304b\u3063\u305f\u3002<\/p>\n

[2013\/05\/09\u8ffd\u8a18]
\nselect to_date(20120921::text,’YYYYMMDD’)
\n::\u3067\u578b\u5909\u63db(\u30ad\u30e3\u30b9\u30c8)\u3057\u3066\u3057\u307e\u3048\u3070\u3001\u3082\u3063\u3068\u697d\u3063\u3066\u308f\u304b\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

8\u6841\u3067\u65e5\u4ed8\u3092\u8868\u3057\u3066\u3044\u308b\u3068\u304d\u306e\u65e5\u4ed8\u8a08\u7b97\u306b\u3064\u3044\u3066 \u4e0b\u306e\u4f8b\u3067\u306f\u30018\u6841\u65e5\u4ed8\u306e\u3068\u3053\u308d\u3092\u6587\u5b57\u5217\u306b\u3057\u3066\u3044\u308b\u304c \u3000COALESCE(TO_CHAR(20120921,’99999999′),’9999 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[66,186],"class_list":["post-1755","post","type-post","status-publish","format-standard","hentry","category-sql","tag-postgresql","tag-postresql"],"_links":{"self":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts\/1755","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1755"}],"version-history":[{"count":1,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts\/1755\/revisions"}],"predecessor-version":[{"id":2737,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts\/1755\/revisions\/2737"}],"wp:attachment":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1755"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}