Question

I have a doubt in generating Query.

Which is best way in these two

Eg:1

DECLARE @SQLQuery varchar(MAX)
SET @SQLQuery='Select tab1.Name,tab2.Name From table1 INNER JOIN table2 ON table2.ID=table1.ID'

IF @Val=0
 SET @SQLQuery=@SQLQuery+' where table1.ID>5'
ELSE
 SET @SQLQuery=@SQLQuery+' where table2.ID>5'

Eg 2:

IF @Val=0
BEGIN
Select tab1.Name,tab2.Name 
From table1 
INNER JOIN table2 
    ON table2.ID=table1.ID
WHERE table1.ID>5
END
ELSE
BEGIN
Select tab1.Name,tab2.Name 
From table1 
INNER JOIN table2 
    ON table2.ID=table1.ID
WHERE table2.ID>5
END

Answer 1

    Select tab1.Name,tab2.Name 
From table1 
INNER JOIN table2 
    ON table2.ID=table1.ID
WHERE (@Val=0 AND table1.ID>5) OR (@Val!=0 AND table2.ID>5)