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Here's a script I don't quite understand:
LOAD
.....
PostalCode as PostCode,
.....
Resident Customer
Where not Exists(PostCode,PostalCode);
What is the use of Where not Exists(PostCode,PostalCode)?
Thanks for help!
after you understand the Exist function and in addition to the information described on the link above, you can replace your script by this:
LOAD
.....
PostalCode as PostCode,
.....
Resident Customer
Where not Exists(PostCode);