While loop return same record twice

I have script below returns 2nd row twice
File ID: 2 File Location Drive : D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\MSDBLog.ldf
File ID: 2 File Location Drive : D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\MSDBLog.ldf
it should return result
File ID: 1 File Location Drive : D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\MSDBData.mdf
File ID: 2 File Location Drive : D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\MSDBLog.ldf
Any idea whats wrong?
DECLARE @dbdatafile2 VARCHAR(500), @fileid2 int, @i2 int;
set @i2 = 1
while (@i2 <= 2)
begin
select @fileid2 = file_id, @dbdatafile2 = physical_name from sys.master_files where database_id = 4;
PRINT 'File ID: ' +( CONVERT(VARCHAR, @fileid2))+' File Location Drive : ' + @dbdatafile2 ;
set @i2 = @i2 + 1
end;
GO

select @fileid2 = file_id, @dbdatafile2 = physical_name from sys.master_files where database_id = 4;
If you query this way, you will always get the same (random) file_id; you have to change your query in this way (marked in bold):
set @i2 = 1
while (@i2 <= 2)
begin
select @fileid2 = file_id, @dbdatafile2 = physical_name
from sys.master_files
where database_id = 4
and file_id = @i2;
PRINT 'File ID: ' +( CONVERT(VARCHAR, @fileid2))+' File Location Drive : ' + @dbdatafile2 ;
set @i2 = @i2 + 1
end;
GO
Olaf Helper
[ Blog] [ Xing] [ MVP]

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Message was edited by:
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Spectrometer Control V3.0.vi ‏113 KB

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03-MAR-2012     40           yes 10          20
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school_date     marks_obtained     has_csts     cst_present cst_absent
01-MAR-2012     20
02-MAR-2012     30
03-MAR-2012     40
04-MAR-2012     70
05-MAR-2012     60
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Edited by: 942390 on Jul 13, 2012 8:44 PM
Edited by: 942390 on Jul 13, 2012 8:45 PM

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04-MAR-2012     70
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While loop return same record twice

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