SQL Server CASE expression in WHERE clause to check NULL value

Question

I try to execute this query in SQL Server:

select * from users where case when 1=1 then name is null else true end;

But I got this error:

Incorrect syntax near the keyword 'is'

This query works in MySQL successfully. Can you please tell me the equivalent of this query in SQL Server?

Answer 1

You can't do such expression, syntax is wrong.

If you want to choose the condition, you have to play with logical operators:

where (1=1 and name is null)
   or (1<>1 and 1=1)

I replaced true with condition that always evalutes to true ( 1=1 ), because true itself is another synta error in your query.