Question : T-SQL If statement

Hello,

I am running SQL Server 2000. I made a T-SQL job that is supposed to count the number of results for a given query and if the result = 0 execute a select statement. It seems to be executing the select statement even when the result is not equal to 0. I cut out the query in the IF statement and ran it separately, the result is 38. Why does 38 = 0 !

The result I am getting when i run it is "Inside the BEGIN"

Code Snippet:

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Declare @FarmName NVarChar
 
Set @FarmName = 'x'
 
If (SELECT Count(*) FROM [RDA Prod Pen Master] As pm LEFT JOIN (SELECT l.[Location ID],Farm,Convert(int, SubString(Convert(NVarChar, [Pen Scan]), 3, 4)) As [Pen Number] FROM [RDA Prod Pen Totals] As pt INNER JOIN Location As l ON Convert(int, SubString(Convert(NVarChar, [Pen Scan]), 1, 2)) = l.House) As totals ON pm.[Location ID] = totals.[Location ID] AND	pm.[Pen Number] = totals.[Pen Number] INNER JOIN Location As l ON pm.[Location ID] = l.[Location ID] WHERE totals.[Location ID] Is Null AND l.Farm = @FarmName) = 0
BEGIN
	Print 'Inside the BEGIN'
END
ELSE
	Print 'Inside the ELSE'

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Answer : T-SQL If statement

I glad you mentioned it because I never noticed it...you need a size on your varchar...this should work.

Declare @FarmName NVarChar(50)

Set @FarmName = 'Pomeroy'

If exists(SELECT 1 FROM [RDA Prod Pen Master] As pm LEFT JOIN (SELECT l.[Location ID],Farm,Convert(int, SubString(Convert(NVarChar, [Pen Scan]), 3, 4)) As [Pen Number] FROM [RDA Prod Pen Totals] As pt INNER JOIN Location As l ON Convert(int, SubString(Convert(NVarChar, [Pen Scan]), 1, 2)) = l.House) As totals ON pm.[Location ID] = totals.[Location ID] AND pm.[Pen Number] = totals.[Pen Number] INNER JOIN Location As l ON pm.[Location ID] = l.[Location ID] WHERE totals.[Location ID] Is Null AND l.Farm = @FarmName)
BEGIN
Print 'Inside the BEGIN'
END
ELSE
Print 'Inside the ELSE'