In ms access, how to write a validation formula for maximum of two letters in a field, first one being a letter and the second one being a number?
Eg A9 (allowed) B5 (allowed) BB5 (not accepted) DD (not accepted) 23 (not accepted)
I think setting the Validation Rule for the field at table level to the following should work:
IS NULL OR Like "[A-Z]#"
This will accept characters between A and Z for the first character and the #
is to accept numbers in the second character space. I added the Is Null Or
but you may want to remove it.
I hope this helps.
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