List of Like condition from one Lookup table.

Question

Hi,
I have 2 tables.
SourceData table and LookUp table .
SourceData table has one column called SName
SName
Jayesh  Krishnan
Karthik Kumar
Liju    Sharma
Kumar Jayesh
Kumar Pradeep
Lookup table has one column called LName(Lookup table is the one which is required to look up with "like" condition)
LNamne
Kumar%
%Krishnan
I need to query SourceDate table with the like condition mentioned in lookup table.
So my result based on above two tables should look like
Jayesh  Krishnan
Kumar Jayesh
Kumar Pradeep
Please help me in this regard.

Answer 1

Try this,
create table sourcetable (SName varchar(200))
insert into sourcetable values('Jayesh Krishnan')
insert into sourcetable values('Karthik Kumar')
insert into sourcetable values('Liju Sharma')
insert into sourcetable values('Kumar Jayesh')
insert into sourcetable values('Kumar Pradeep')
create table lookuptable (LName varchar(200))
insert into lookuptable values('Kumar%')
insert into lookuptable values('%Krishnan')
go
declare @sql nvarchar(max)
declare @temp table ([where] nvarchar(max))
declare @where nvarchar(max)
set @sql = 'SELECT Substring(COLS,4, LEN(COLS)) FROM (
SELECT Stuff((SELECT '' OR SName like '''''' + LName + ''''''''
FROM lookuptable
FOR xml path('''')), 1, 1, '''') COLS
) X'
insert into @temp exec sp_executesql @sql
select @where = [where] from @temp
set @sql = 'SELECT * FROM sourcetable WHERE ' + @where
exec sp_executesql @sql
go
drop table sourcetable
drop table lookuptable
Regards, RSingh