如何在Where条件中使用相同表的concat列

Question

user_id  | email_id  | type 
---------------------------------------
000121  | test1234   | EXT
000125  | best_21    | LOT
000128  | lite_21@   | EXT

我想使用like

Select * from tablename where Concat (emailid,'',type) LIKE 'test1234 EXT'

但此查询无效

Answer 1

为什么不使用

Select * from tablename where emailid LIKE 'test1234' AND type LIKE ' EXT'

Answer 2

此查询会有所帮助。

SELECT * FROM tablename WHERE 
       emailid + '' + type LIKE 'test1234EXT' 
       OR emailid LIKE 'test1234EXT'  
       OR type LIKE 'test1234EXT'

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