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4 Posts

Posted - 09/01/2010 :  11:41:06  Show Profile  Reply with Quote
I was wondering if newid() value is different even if newid() is used in 2 different places in the same sql statement, i.e, one newid() is select clause and another newid() in where clause

(tbl1.col1, NEWID())) as int))
% 100 FROM table1 tbl1
(tbl1.col1, NEWID())) as int))
% 100) < 20

The reason for my question: The results of the select do not seem to match with the where condition.

Thank you.


5072 Posts

Posted - 09/01/2010 :  11:49:48  Show Profile  Visit russell's Homepage  Reply with Quote
it will return 2 distinct values, so your query won't work. but you can do this

Declare @newid uniqueidentifier
set @newid = newid()

SELECT	*, ABS(CAST((BINARY_CHECKSUM(tbl1.col1, @newid)) as int)) % 100
FROM	table1 tbl1
WHERE	(ABS(CAST((BINARY_CHECKSUM(tbl1.col1, @newid)) as int)) % 100) < 20
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