Small white one, just learn MY SQL, has written such a statement, but the execution is always an error "1054 - Unknown column 'qq_id' in 'the field list'"
I write statement is as follows:
Select * from qljl_qq
Where qqh_id in (select qq_id from qianke. Cqry_qq)

Please predecessors guidance!

CodePudding user response:

Database qianke, table cqry_qq no qq_id this field,