{"id":654,"date":"2024-11-28T21:09:24","date_gmt":"2024-11-28T13:09:24","guid":{"rendered":"http:\/\/www.chan.ink\/?p=654"},"modified":"2024-11-28T21:09:27","modified_gmt":"2024-11-28T13:09:27","slug":"%e3%80%90python%e3%80%91queryset","status":"publish","type":"post","link":"http:\/\/www.chan.ink\/index.php\/2024\/11\/28\/%e3%80%90python%e3%80%91queryset\/","title":{"rendered":"\u3010Python\u3011Queryset"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\"><code>QuerySet<\/code> \u7684\u542b\u4e49<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>QuerySet<\/code><\/strong> \u8fd9\u4e2a\u8bcd\u53ef\u4ee5\u62c6\u5206\u6210\u4e24\u4e2a\u90e8\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Query<\/strong>\uff1a\u4ee3\u8868\u67e5\u8be2\uff08\u67e5\u8be2\u6570\u636e\u5e93\uff09\u3002<\/li>\n\n\n\n<li><strong>Set<\/strong>\uff1a\u5728\u8fd9\u91cc\u7684\u201cset\u201d\u5e76\u4e0d\u662f\u6307 Python \u4e2d\u7684\u96c6\u5408\u7c7b\u578b\uff0c\u800c\u662f\u6307<strong>\u4e00\u7ec4\u6570\u636e<\/strong>\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u67e5\u8be2\u7ed3\u679c\u5f80\u5f80\u662f\u4e00\u4e2a\u201c\u7ed3\u679c\u96c6\u201d\uff0c\u8868\u793a\u7b26\u5408\u67e5\u8be2\u6761\u4ef6\u7684\u6570\u636e\u96c6\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff0c<code>QuerySet<\/code> \u4ee3\u8868\u7684\u662f\u4e00\u4e2a<strong>\u67e5\u8be2\u7ed3\u679c\u96c6<\/strong>\uff0c\u5373\u6570\u636e\u5e93\u67e5\u8be2\u540e\u7684\u6570\u636e\u96c6\uff08\u6216\u8005\u8bf4\u662f\u201c\u7ed3\u679c\u96c6\u201d\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Django \u7684 <code>QuerySet<\/code> \u5e76\u4e0d\u76f4\u63a5\u5b58\u50a8\u67e5\u8be2\u5230\u7684\u6570\u636e\uff0c\u5b83\u53ea\u662f\u4e00\u4e2a\u67e5\u8be2\u5bf9\u8c61\uff0c\u76f4\u5230\u4f60\u5f00\u59cb\u8fed\u4ee3\u5b83\u6216\u8005\u5c06\u5176\u8f6c\u6362\u4e3a\u4e00\u4e2a\u5217\u8868\u7b49\u65f6\uff0c\u67e5\u8be2\u624d\u4f1a\u88ab\u6267\u884c\u3002\u67e5\u8be2\u7ed3\u679c\u4f1a\u88ab\u61d2\u52a0\u8f7d\uff08lazy loading\uff09\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u76f4\u5230\u4f60\u771f\u6b63\u4f7f\u7528\u5b83\u65f6\uff0c\u624d\u4f1a\u8bbf\u95ee\u6570\u636e\u5e93\u5e76\u8fd4\u56de\u6570\u636e\u3002\u4f60\u53ef\u4ee5\u50cf\u64cd\u4f5c\u96c6\u5408\u4e00\u6837\u5bf9 <code>QuerySet<\/code> \u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>QuerySet \u7684\u542b\u4e49 QuerySet \u8fd9\u4e2a\u8bcd\u53ef\u4ee5\u62c6\u5206\u6210\u4e24\u4e2a\u90e8\u5206\uff1a \u56e0\u6b64\uff0cQuerySet \u4ee3\u8868\u7684\u662f\u4e00\u4e2a\u67e5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-654","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/comments?post=654"}],"version-history":[{"count":1,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/654\/revisions"}],"predecessor-version":[{"id":657,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/654\/revisions\/657"}],"wp:attachment":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/media?parent=654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/categories?post=654"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/tags?post=654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}