I have a JOIN on two tables, and I have no control over the data. I've now
ran into a situation where one of the tables contains wildcard characters
that are fouling up the JOIN.

Table1.column:
0110 EXFN 01 ABCD

Table2.column
0110 EXFN 01
____ EXFN 01

The JOIN clause:
T2.column concat '%' LIKE T1.column

This has always worked fine, but in this case it's matching both rows in
Table2.

Any suggestions on this?

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