{"id":551,"date":"2026-02-25T15:10:43","date_gmt":"2026-02-25T07:10:43","guid":{"rendered":"https:\/\/lib.kimsor.top\/?p=551"},"modified":"2026-02-25T15:10:43","modified_gmt":"2026-02-25T07:10:43","slug":"pgsql%e8%bf%9e%e8%a1%a8%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/lib.kimsor.top\/?p=551","title":{"rendered":"PgSQL\u8fde\u8868\u66f4\u65b0\u64cd\u4f5c"},"content":{"rendered":"\n<p>\u5047\u8bbe\u5f53\u524dA\u8868\u9700\u8981\u94fe\u63a5B\u8868\u5e76\u4e14\u4ee5B\u8868\u4e2d\u7684code\u5b57\u6bb5\u53bb\u8986\u76d6\u66f4\u65b0A\u8868\u7684code\u5b57\u6bb5\uff0cA\u8868\u901a\u8fc7year\u548cB\u8868\u7684year\u8fde\u63a5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>UPDATE A a\nSET code = b.code\nFROM B b\nWHERE a.year = b.year<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u5728set\u66f4\u65b0\u5b57\u6bb5\u7684\u65f6\u5019\u4e0d\u8981\u4f7f\u7528\u522b\u540d\uff0c\u4f8bSET a.code = b.code\uff0c\u8fd9\u6837\u4f1a\u63d0\u793a\u62a5\u9519\u65e0\u6cd5\u627e\u5230a.code\u5b57\u6bb5<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5047\u8bbe\u5f53\u524dA\u8868\u9700\u8981\u94fe\u63a5B\u8868\u5e76\u4e14\u4ee5B\u8868\u4e2d\u7684code\u5b57\u6bb5\u53bb\u8986\u76d6\u66f4\u65b0A\u8868\u7684code\u5b57\u6bb5\uff0cA\u8868\u901a\u8fc7year\u548cB\u8868\u7684yea [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,3],"tags":[],"class_list":["post-551","post","type-post","status-publish","format-standard","hentry","category-pgsql","category-database"],"_links":{"self":[{"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=\/wp\/v2\/posts\/551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=551"}],"version-history":[{"count":1,"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=\/wp\/v2\/posts\/551\/revisions"}],"predecessor-version":[{"id":552,"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=\/wp\/v2\/posts\/551\/revisions\/552"}],"wp:attachment":[{"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lib.kimsor.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}