RE: Need assistance with SQL statement over QSYS2.SYSTABLESTAT

Robert,

Looks good and I think you are right about not needed the third WHEN because the first one will stop the divide by zero case.

Scott Mildenberger
Programmer/Analyst
Davis Transport Inc.
Missoula, MT
406-728-5510 x128


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Robert Clay
Sent: Monday, September 16, 2013 1:45 PM
To: midrange-l@xxxxxxxxxxxx; midrange-l@xxxxxxxxxxxx
Subject: Re: Need assistance with SQL statement over QSYS2.SYSTABLESTAT

Scott,

You're right.

Combined with the other suggestions, how about this?

CAST(CASE
WHEN ( Number_Deleted_Rows = 0 ) THEN 0
WHEN ( Number_Rows = 0 ) AND ( Number_Deleted_Rows > 0 ) THEN
100.00
WHEN Number_Rows = Number_Deleted_Rows THEN
50.00
ELSE (100 * Number_Deleted_Rows / ( Number_Rows + Number_Deleted_Rows ) )
END
AS DECIMAL( 5 , 2 )
) AS Percent_Deleted

Might not even need the third WHEN.

Robert

"Contrariwise, if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic."--Tweedledee On 09/16/2013 2:40 PM, Scott Mildenberger wrote:

Robert,

Your first two whens can be combined into one

WHEN Number_Deleted_Rows = 0 THEN 0

Also, your very last when doesn't return 'Percent deleted', consider 1 Row and 5 deleted. Returns 20%. The more deleted the smaller the percent, is that what you really want? You may be able to use the when before that as an ELSE catchall.


Scott Mildenberger
Programmer/Analyst
Davis Transport Inc.
Missoula, MT
406-728-5510 x128

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