How do I connect to another table with multiple delimited values in the same column?
Hey guys,
I am facing an issue that I would like to connect customer data to a transaction table. Within the transaction table, everything is given as expected. However, the customer data are not unambiguous. More specifically, I find multiple CustomerIDs in the same cell per customer. The customer IDs are delimited mostly by "/" (sometimes even ";"). During the years, some customers got new IDs. Within the transaction table, any Customer ID could be given.
Example:
Customer data:
Customer ID
Customer Name
A123
A-Corp
B456 / B789
B-Company
C123 / C456 / C789
C-Limited
D987 ; D654
D-Group
Transaction data:
OrderID
CustomerID
InvoiceAmount
100078
A123
100
100079
B456
200
100080
B789
50
100081
D654
300
In this example, customer "B-Company" has two possible customer IDs (given in the customer table) which both appear in the transaction table. I would like to match both transaction lines to "B-Company" to show an aggregated sum.
How could I link the customer data to the transaction data?