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SQL Sort with computed field 'dec' very slow
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  1. Michael Kaczmarczyk
  2. PowerBuilder
  3. Monday, 21 September 2026 09:43 AM UTC

HI,

 

a customer of us is complaining about performance issues after upgrading from an old version of our program ( PB2019R3 ) to the current version ( PB2022R2 ). We do data retrieval in our application and sort/filter on the clients side.

We could drill the issue down to a simple SQL query select xyz from abc where <someStatements>:

(e.g. Select rechnung.nr from rechnung where rownum <=100000)

  • 100k data entries retrieved from DB -> ~1s for all Data to be shown
  • 100k data entries retrieved from DB with sort="upper(left(nr)) A" -> ~3s for all Data to be shown
  • 100k data entries retrieved from DB with sort="dec(nr) A" -> ~50s for all Data to be shown

nr is here a column with content like 1000-47.

Trying to compute the value dec(nr) before and using this value in the sort like

cf_nr = dec(nr)

sort="cf_nr A"

is not helping here as the needed time is the same.

 

We checked here already:

  • no redraw is done ( we just log the result, same issue )
  • data writing to a data window is not changing the issue 
  • PB2019R3 needs for the same query ~13s
  • PB2025R2 needs for the same query ~ 50s ( same as PB2022R2 )
  • Accessibility=0 -> not applicable here for this case ( mentioned: https://docs.appeon.com/pb2025/troubleshooting_guide/tr_011.html )

 

Is there something we can do? Is the issue known? Because having a time of around 50s is nothing our customer will accept. The time before with ~ 13s would be ok, less of course better.

The google AI mentions that there is now an overhead because of more strict handling of the dec-cast. But I have not found anything related to it directly in the appeon documentation.

 

Kind regards,

Michael

PowerBuilder build takes over 5 hours DataWindow Truncation on Retrieve
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