Unsuccessful metadata update. STORE RDB$RELATION_FIELDS failed. attempt to store duplicate value (visible to active transactions) in unique index "RDB$INDEX_XYZ".

This error shows up when you try to create a table or view column under a name that already exists. It's a common problem that happens when you create views and do not supply explicit column names - and don't use column aliases in underlying select. Naming columns explicitly should fix the problem.

Do you find this FAQ incorrect or incomplete? Please e-mail us what needs to be changed. To ensure quality, each change is checked by our editors (and often tested on live Firebird databases), before it enters the main FAQ database. If you desire so, the changes will be credited to your name. To learn more, visit our add content page.