how to use LIKE with column name

Question

Normally LIKE statement is used to check the pattern like data.

example:

select * from table1 where name like \'ar%\'

Answer 1

SQL SERVER

 WHERE ColumnName LIKE '%'+ColumnName+'%'

Answer 2

declare @LkeVal as Varchar(100)
declare @LkeSelect Varchar(100)

Set @LkeSelect = (select top 1 <column> from <table> where <column> = 'value')
Set @LkeVal = '%' + @LkeSelect

select * from <table2> where <column2> like(''+@LkeVal+'');

Answer 3

...
WHERE table1.x LIKE table2.y + '%'

Answer 4

ORACLE DATABASE example:

select * 
from table1 t1, table2 t2
WHERE t1.a like ('%' || t2.b || '%')

Answer 5

You're close.

The LIKE operator works with strings (CHAR, NVARCHAR, etc). so you need to concattenate the '%' symbol to the string...

MS SQL Server:

SELECT * FROM table1,table2 WHERE table1.x LIKE table2.y + '%'

Use of LIKE, however, is often slower than other operations. It's useful, powerful, flexible, but has performance considerations. I'll leave those for another topic though :)

EDIT:

I don't use MySQL, but this may work...

SELECT * FROM table1,table2 WHERE table1.x LIKE CONCAT(table2.y, '%')

Answer 6

For SQLLite you will need to concat the strings

select * from list1 l, list2 ll 
WHERE l.name like "%"||ll.alias||"%";