Examples of matching:

TALL0047A    TALL047A    match
TALL0047A    TAL0047A       not a match
TALL0047A    TAL0470A       not a match


The contents will always be one to four alpha characters followed by one
to four numeric characters possibly followed by one or two alpha
characters.

A match would be defined as the following criteria being met:

- The last one to four digits being identical (excluding leading zeroes)
- The first one to four letters being identical

I think your rules need more flushing out because based on your rules you can get many entries in list 1 to match a single entry in list 2

> TALL0047A    TALL047A    match
> TALL0047A    TAL0047A          not a match

Based on your rules above, TALL0047A and TAL0047A do in fact match

Are you really saying:

From both items
remove trailing alphas
take the last 4 digits
remove any leading zeros
if the remaining digits match from both items move on to the front of the string if the leading alphas match (i.e. have the same length and same sequence) then you have a full match

Do the strings always start with alphas? Or are there sometimes numerics within the first 1-4 characters?

Is there stuff between the leading and ending portions, such that the entries may be more than 10 characters long?


Jay


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