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Hi Dave
Try the following
Select distinct type concat code from file
Alan Shore
E-mail : ASHORE@xxxxxxxx
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-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of Dave
Sent: Wednesday, November 18, 2020 1:08 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: [EXTERNAL] Real life SQL Brain teaser
Hi,
Before I start writing a program, I was wondering if SQL could offer an easier solution. I've been looking at using rank and over functions, but I can't see it! :
In my table below there are 4 customers but only 3 distinct combinations of Type and Code.
Customer Type Code
1 T1 C1
1 T1 C2
2 T2 C3
2 T2 C4
3 T5 C1
4 T1 C1
4 T1 C2
From this table, can I create the following table that contains each combination of Type and Code only once ?
combination Type Code
1 T1 C1
1 T1 C2
2 T2 C3
2 T2 C4
3 T5 C1
TIA !
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