Use case in where clause [duplicate]

Answer 1

I think this is what you're looking for:

select case when id = 1 then 0 else null end as col1, * from table_name

Answer 2

I am not sure of your requirement but you can try if below satisfies you

select * from table_name
where 
isnull(col1,'') = case when id = 1 then   0
else '' end

Also try

select * from table_name
where 
( col1 = 0 and id = 1) OR ( col1 is null and id<>1 )

Answer 3

SELECT *
FROM table_name
WHERE isnull(id, '')= CASE(id)
               WHEN 1
               THEN 0
               ELSE ''
           END;

Answer 4

I think you are looking for a case when solution. Which can be used as below to fill in a specific column. You do need to select the other columns as well when you do this though.

select 
case when id = 1 then 0 else null end as col1
from table_name