Subject Comparison that detects diff in trailing blanks?
Author Kjell Rilbe

Resending this because the first one still hasn't appeared after a few

Since Firebird and the SQL standard says that = and <> shouldn't care
about trailing blanks in varchar fields, what is the recommended way to
compare varchar values so that differences in trailing blanks are detected?

I can see a few ways:

1. where F1 || 'X' <> F2 || 'X'
2. where F1 not like F2

I assume 1 can't use any indexes. But 2 will have problems if F2
contains wildcards % or _.

So, is there a way that both can use indexes and works with all possible
values in both F1 and F2?

Kjell Rilbe
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