[Firebird-devel] Drop Column raises "No current record for fetch operation" on FB4

[Ivan P. <iva...@se...>]

I have FB4 database created using Backup/Restore from FB2.5 database 
where attempt to drop column will raise this error:

ALTER TABLE TAB DROP STAV;

Statement failed, SQLSTATE = 22000
[335544351] unsuccessful metadata update
[336397287] -ALTER TABLE TAB failed
[335544348] -no current record for fetch operation
[335544842] -At trigger 'RDB$TRIGGER_23'

I can send the database on request (it is small because I deleted most 
data and metadata).

I.