{"id":1419,"date":"2017-12-14T09:03:57","date_gmt":"2017-12-14T00:03:57","guid":{"rendered":"https:\/\/www.ecomott.co.jp\/tech_blog\/?p=1419"},"modified":"2018-09-13T09:55:47","modified_gmt":"2018-09-13T00:55:47","slug":"postgresql-sql%e3%81%a7%e5%a4%96%e9%83%a8%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%82%92%e5%ae%9f%e8%a1%8c%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.ecomottblog.com\/?p=1419","title":{"rendered":"PostgreSQL SQL\u3067\u5916\u90e8\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u30a8\u30b3\u30e2\u30c3\u30c8\u30a2\u30c9\u30d9\u30f3\u30c8\u30ab\u30ec\u30f3\u30c0\u30fc14\u65e5\u76ee\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3067\u3059\u3002<\/p>\n<p>COPY\u30b3\u30de\u30f3\u30c9\u306ePROGRAM\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5229\u7528\u3059\u308b\u3068\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u304c\u51fa\u6765\u307e\u3059\u3002<br \/>\n\u672c\u6765\u306f\u8fd4\u308a\u5024\u3092\u30c6\u30fc\u30d6\u30eb\u306b\u30b3\u30d4\u30fc\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3057\u3087\u3046\u304c\u3001<br \/>\n\u4eca\u56de\u306f\u4efb\u610f\u306e\u30b3\u30de\u30f3\u30c9\u3092\u53e9\u304f\u305f\u3081\u3060\u3051\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u307e\u305a\u7a7a\u30c6\u30fc\u30d6\u30eb\u3092\u7528\u610f\u3057\u307e\u3059\u3002<br \/>\n<code>database# CREATE TABLE empty_table (col1 text);<\/code><br \/>\n<code>CREATE TABLE<\/code><\/p>\n<p>\u4e0b\u8a18SQL\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<br \/>\n<code>database# COPY empty_table FROM PROGRAM 'ls \/usr\/local\/pgsql &amp;gt; ~\/output\/output.txt';<\/code><br \/>\n<code>COPY 0<\/code><\/p>\n<p><code>$ \/home\/postgres\/output\/ls<\/code><br \/>\n<code>output.txt<\/code><\/p>\n<p>output.txt\u304c\u4f5c\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<br \/>\npostgres\u306e\u5b9f\u884c\u30e6\u30fc\u30b6\u306b\u3066\u30b3\u30de\u30f3\u30c9\u304c\u5b9f\u884c\u3055\u308c\u308b\u306e\u3067\u6ce8\u610f\u3057\u3066\u4e0b\u3055\u3044\u3002<\/p>\n<p><code>$ vim output.txt<\/code><br \/>\n<code>bin<\/code><br \/>\n<code>data<\/code><br \/>\n<code>include<\/code><br \/>\n<code>lib<\/code><br \/>\n<code>share<\/code><\/p>\n<p>ls\u306e\u5185\u5bb9\u304c\u8a18\u8ff0\u3055\u308c\u3001ls\u304c\u5b9f\u884c\u3055\u308c\u305f\u3053\u3068\u304c\u4f3a\u3048\u307e\u3059\u3002<\/p>\n<p>\u7a7a\u30c6\u30fc\u30d6\u30eb\u3092\u7528\u610f\u305b\u305a\u306b\u65e2\u5b58\u30c6\u30fc\u30d6\u30eb\u3067\u3082\u30b3\u30de\u30f3\u30c9\u306f\u5b9f\u884c\u51fa\u6765\u307e\u3059\u304c\u3001<\/p>\n<p><code>database# COPY empty_table FROM PROGRAM 'ls \/usr\/local\/pgsql';<\/code><\/p>\n<p>\u9593\u9055\u3063\u3066\u3053\u3046\u3057\u3066\u3057\u307e\u3046\u3068 ls \u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c\u7d50\u679c\u3092COPY\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u3001<br \/>\n\u7a7a\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u3063\u3066\u304a\u3044\u305f\u307b\u3046\u304c\u7121\u96e3\u3067\u3059\u3002<br \/>\n\u5b9f\u884c\u7d50\u679c\u3092\u6b8b\u3059\u5fc5\u8981\u304c\u7121\u3044\u5834\u5408\u306f \/dev\/null \u3057\u3066\u3057\u307e\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>SQL\u306a\u3093\u304b\u4f7f\u308f\u306a\u3044\u3067\u30b3\u30de\u30f3\u30c9\u76f4\u63a5\u53e9\u3051\u3070\uff1f\u3068\u304a\u601d\u3044\u3067\u3057\u3087\u3046\u3002<br \/>\n\u305d\u306e\u901a\u308a\u306a\u3093\u3067\u3059\u304c\u3001\u30c8\u30ea\u30ac\u30fc\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u4fbf\u5229\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u305d\u306e\u8fba\u308a\u306f\u6b21\u56de\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30a8\u30b3\u30e2\u30c3\u30c8\u30a2\u30c9\u30d9\u30f3\u30c8\u30ab\u30ec\u30f3\u30c0\u30fc14\u65e5\u76ee\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3067\u3059\u3002 COPY\u30b3\u30de\u30f3\u30c9\u306ePROGRAM\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5229\u7528\u3059\u308b\u3068\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u304c\u51fa\u6765\u307e\u3059\u3002 \u672c\u6765\u306f\u8fd4\u308a\u5024\u3092\u30c6\u30fc\u30d6\u30eb\u306b\u30b3\u30d4\u30fc\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3057\u3087\u3046\u304c\u3001 \u4eca\u56de\u306f\u4efb\u610f\u306e [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[19,31],"_links":{"self":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1419"}],"collection":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1419"}],"version-history":[{"count":8,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1419\/revisions"}],"predecessor-version":[{"id":1436,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1419\/revisions\/1436"}],"wp:attachment":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}