{"id":259,"date":"2015-07-13T11:39:20","date_gmt":"2015-07-13T03:39:20","guid":{"rendered":"https:\/\/www.webteach.tw\/?p=259"},"modified":"2015-07-13T11:39:20","modified_gmt":"2015-07-13T03:39:20","slug":"mysql-count-distinct","status":"publish","type":"post","link":"https:\/\/www.webteach.tw\/?p=259","title":{"rendered":"[ MYSQL ] &#8211; COUNT DISTINCT"},"content":{"rendered":"<p>\t\t\t\t\u4f7f\u7528\u6642\u6a5f\u7d71\u8a08\u67d0\u500b\u6b04\u4f4d\u7684\u7b46\u6578\u6642\u5e0c\u671b\u7018\u6389 \u91cd\u8986\u7684\u6b04\u4f4d<br \/>\nSELECT COUNT(DISTINCT \u6b04\u4f4d) FROM \u8cc7\u6599\u8868\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u6642\u6a5f\u7d71\u8a08\u67d0\u500b\u6b04\u4f4d\u7684\u7b46\u6578\u6642\u5e0c\u671b\u7018\u6389 \u91cd\u8986\u7684\u6b04\u4f4d &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[183,215],"class_list":["post-259","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-count","tag-distinct"],"_links":{"self":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/posts\/259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=259"}],"version-history":[{"count":0,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/posts\/259\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}