{"id":723,"date":"2020-06-01T01:15:55","date_gmt":"2020-05-31T16:15:55","guid":{"rendered":"http:\/\/www.onepage.co.kr\/wordpress\/?p=723"},"modified":"2020-06-01T01:16:29","modified_gmt":"2020-05-31T16:16:29","slug":"mysql-rank-function-implementation","status":"publish","type":"post","link":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/2020\/06\/01\/mysql-rank-function-implementation\/","title":{"rendered":"MySQL Rank Function Implementation"},"content":{"rendered":"<p>create table ds (id int(11), login int(11))<br \/>\ninsert into ds (id, login)<br \/>\nvalues\u00a0 (1,1),<br \/>\n(2,1),<br \/>\n(3,1),<br \/>\n(4,2),<br \/>\n(5,2),<br \/>\n(6,6),<br \/>\n(7,6),<br \/>\n(8,1)<\/p>\n<p>select result.id,result.login,result.rank from (<br \/>\nSELECT\u00a0\u00a0\u00a0 id,<br \/>\nlogin,<br \/>\nIF(login=@last,@curRank:=@curRank,@curRank:=@_sequence) AS rank,<br \/>\n@_sequence:=@_sequence+1,<br \/>\n@last:=login<br \/>\nFROM\u00a0\u00a0\u00a0\u00a0\u00a0 ds , (SELECT @curRank := 1, @_sequence:=1, @last:=0) r<br \/>\nORDER BY\u00a0 id asc) as result;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>create table ds (id int(11), login int(11)) insert into ds (id, login) values\u00a0 (1,1), (2,1), (3,1), (4,2), (5,2), (6,6), (7,6), (8,1) select result.id,result.login,result.rank from ( SELECT\u00a0\u00a0\u00a0 id, login, IF(login=@last,@curRank:=@curRank,@curRank:=@_sequence) AS rank, @_sequence:=@_sequence+1, @last:=login FROM\u00a0\u00a0\u00a0\u00a0\u00a0 ds , (SELECT @curRank := 1, @_sequence:=1, @last:=0) r ORDER BY\u00a0 id asc) as result;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-723","post","type-post","status-publish","format-standard","hentry","category-mariadb-mysql"],"_links":{"self":[{"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/723","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=723"}],"version-history":[{"count":1,"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/723\/revisions"}],"predecessor-version":[{"id":724,"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/723\/revisions\/724"}],"wp:attachment":[{"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=723"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.onepage.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}