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Why empty string is returned as 0
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Forum:
Microsoft SQL Server
Category:
Other
Title:
Why empty string is returned as 0
Environment versions
SQL Server:
SQL Server 2005
Miscellaneous
Thread ID:
01544288
Message ID:
01544288
Views:
63
I have a simple stored procedure that declares a variable @ErrorMessage at the top as
declare @ErrorMessage AS VARCHAR(100)
SET @ErrorMessage = ''
At the end of the procedure I return this value as
RETURN @ErrorMessage
The value is set to the @ErrorMessage in CATCH block. Then I test this procesure in a query window as following
declare @retval as varchar(100)
EXECUTE @retval = myproced param1, param2
print @retval
But if there is no problem within the procedure, the value of @retval showing in the query window is 0 (zero). Why not empty string?
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
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