Question

I currently have a table in the following format and with the following example data:

transaction  name  receipt
     1       jim   aisjdy
     2       john  uuyjskl
     2       john  ioxiqo
     3       will  eurique
     1       jim   xoqiel
     3       will  sijcjg

Each transaction is associated with the customer’s name and they receive two separate receipts.

How would one go about creating a query that would display ‘transaction’, ‘name’ and the two different receipts in one row?

Example:

transaction  name  receipt  receipt
     1       jim    aisjdy   xoqiel

I know this is bad practice and, in an idea world, I’d have created two columns containing the two different receipts and/or normalized the table into two tables containing transaction and name in one, and receipt 1 and 2 in another. Unfortunately, I did not produce this table and I do not have the time to restructure everything.

I would kindly appreciate any help – thanks in advance!

Answer 1

Since there are only two values, you can use group by:

select transaction, name, min(receipt), max(receipt)
from t
group by transaction, name