RE: SQL rows to columns

Thanks all...

I need this in two columns (eventually maybe up to 5 columns)... so listagg doesn't seem to do it. Charles Join example also creates a single column.

I used Birgitta's example - this returns the desired output, but took 60 seconds. My sub-select took 31 milliseconds.
The NOTEPDUC file is large file (12m records).

Run SQL Scripts Explain does not recommend any additional indexes. The aggregation and table probe were the big winners.

So I'm wondering if the sub-select is the best approach?

Thx


-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Birgitta Hauser
Sent: Tuesday, March 12, 2024 4:48 PM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: SQL rows to columns

You may try something like this (it is at least one Sub-Select less)

With x as (Select Ucntk, Min(Case When UCq3# = 1 Then UCCMT End) Comment1,
Min(Case When UCq3# = 2 Then UCCMT End) Comment2
from Notepduc
Where UCNOTT = 'C'
and UCSQ3 in (1, 2)
Group By UCNTK
Select Odcom#, Odord#, Odcmt#,
Coalesce(Comment1, '') Comment1, Coalesce(Comment2m '') Comment2
from Oeorlod Left join x on ucntk = Odcmt#

Mit freundlichen Grüßen / Best regards

Birgitta Hauser
Modernization - Education - Consulting on IBM i Database and Software Architect IBM Champion since 2020