我有多个生物在数据库(Mysql)和6个不同的领域。目前所有的生物出现在任何地方,但我想让一些出现在一个地点或多个选定的地点。12 appears only in Graveyard and Swamp; 124 appreas onlyin Graveyard, Swamp, Caves; 对于sql,我将使
DISTINCT user_one as user_id WHERE user_two IN (SELECT user_one as user_idWHERE user_one IN (SELECT user_one as user_id WHERE" SELECT friends_id from friends
FROM (SELECT DISTINCT user_one as user_id WHERE user_two IN (SELECTuser_one as user_id WHERE user_two = '$session_user_idDISTINCT user_two
FROM friends
我可以通过以下方式简单地获取数组的一项 GridView1.DataSource = from e in table where e.Keyword.Equals我想要这样的东西: GridView1.DataSource = from e in table where e.Keyword.Equals