[sql] How to assign an exec result to a sql variable?

How do you assign the result of an exec call to a variable in SQL? I have a stored proc called up_GetBusinessDay, which returns a single date.

Can you do something like this:

exec @PreviousBusinessDay = dbo.up_GetBusinessDay @Date, -1

declare @EventId int

CREATE TABLE #EventId (EventId int)

insert into #EventId exec rptInputEventId

set @EventId = (select * from #EventId)

drop table #EventId 

I had the same question. While there are good answers here I decided to create a table-valued function. With a table (or scalar) valued function you don't have to change your stored proc. I simply did a select from the table-valued function. Note that the parameter (MyParameter is optional).

CREATE FUNCTION [dbo].[MyDateFunction] 
(@MyParameter varchar(max))
RETURNS TABLE 
AS
RETURN 
(
    --- Query your table or view or whatever and select the results.
    SELECT DateValue FROM MyTable WHERE ID = @MyParameter;
)

To assign to your variable you simply can do something like:

Declare @MyDate datetime;
SET @MyDate = (SELECT DateValue FROM MyDateFunction(@MyParameter));

You can also use a scalar valued function:

CREATE FUNCTION TestDateFunction()  
RETURNS datetime  
BEGIN  
    RETURN (SELECT GetDate());
END

Then you can simply do

Declare @MyDate datetime;
SET @MyDate = (Select dbo.TestDateFunction());
SELECT @MyDate;

This will work if you wish to simply return an integer:

DECLARE @ResultForPos INT 
EXEC @ResultForPos = storedprocedureName 'InputParameter'
SELECT @ResultForPos

Here is solution for dynamic queries.

For example if you have more tables with different suffix:

dbo.SOMETHINGTABLE_ONE, dbo.SOMETHINGTABLE_TWO

Code:

DECLARE @INDEX AS NVARCHAR(20)
DECLARE @CheckVALUE AS NVARCHAR(max) = 'SELECT COUNT(SOMETHING) FROM 
dbo.SOMETHINGTABLE_'+@INDEX+''
DECLARE @tempTable Table (TempVALUE int)
DECLARE @RESULTVAL INT

INSERT INTO @tempTable
    EXEC sp_executesql @CheckVALUE

SET @RESULTVAL = (SELECT * FROM @tempTable)

DELETE @tempTable

SELECT @RESULTVAL 

From the documentation (assuming that you use SQL-Server):

USE AdventureWorks;
GO
DECLARE @returnstatus nvarchar(15);
SET @returnstatus = NULL;
EXEC @returnstatus = dbo.ufnGetSalesOrderStatusText @Status = 2;
PRINT @returnstatus;
GO

So yes, it should work that way.