Question

I am new to MSSQL. i need to change the condition in select statement where based same on the Condition.
I try to store the where clause Conditions in One variable and assign that variable in into the select statement where clause.

Like This..

declare @test varchar(max);
declare @test1 varchar(max);
set @test=' id = 14';
select FirstName from tblUser where @test;

But it so some error.

Like:

Msg 4145, Level 15, State 1, Line 4
An expression of non-boolean type specified in a context where a condition is expected, near ';'.

Please tell me any other way implement this flow…

Thanks…

Answer 1

You can do it using dynamic SQL. For more information see link from Obed’s answer

    declare @test nvarchar(max);
    create table tblUser (id int, FirstName varchar(10))
    set @test=N' id = 14';
    set @test=N'select FirstName from tblUser where '+@test
    exec sp_executesql @test;

    drop table tblUser