=?iso-8859-1?B?ZGrpIGRq6Q==?= <[EMAIL PROTECTED]> writes:
> I get the error : ERROR: duplicate key violates unique constraint
> "unique_barcode128"
> But the string returned by text2code128('AB28662097') and
> text2code128('AB28662098') are different!!!, i.e., respectively ÌABÇ<b4ÅÃÎ
> and ÌABÇ<b4ÆÊÎ.
What locale are you running the server in? It's possible that these
strings are equal according to the locale-specific strcoll() behavior.
In particular, if you are using a locale that expects UTF8, it's pretty
common for strcoll to go nuts when faced with non-UTF8-legal strings.
You might be better off using bytea instead of varchar.
regards, tom lane
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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