我有一个MySQL数据库的只读访问权,我需要循环下面的查询大约9000次,每次使用不同的$content_path_id。SELECT an.uuid FROM alf_node an WHERE an.id IN (SELECT acd.id FROM alf_content_data acd WH
1.from tab1 t1,where t1.city in (select t2.city from tab2 where safety_score = 1) select capitaincome, t1.city, safety_score tab1 t2
where t1.city in (select city from tab2 where s
我尝试在Rails 3的Arel和/或Active Record中嵌套SELECT查询,以生成以下SQL语句。SELECT sorted.* FROM (SELECT * FROM points ORDER BY points.timestamp DESC) AS sorted GROUP BY sorted.client_id可以通过执行以下操作创建子查询的别名sorted
在使用MySQL查询为Kayako Fusion生成一些外部报告时,我遇到了一个奇怪而恼人的问题。表中的一个字段包含一个“TEXT”字段,该字段可以包含以下两个值之一: 41或40。下面是令人讨厌的原始SQL语句:swtickets.ticketid AS `Ticket ID`,swtickets.ticketmaskid AS `TicketMAS