to be precise - after code review I do not see isc_sqlcode() to be maked
as deprecated
but I remember well that it was mentioned somewhere as not recommended
in new development, sqlstate is preferred
The Firebird 4 language reference states:
|"SQLCODE| has been used for many years and should be considered as
deprecated now. Support for |SQLCODE| is likely to be dropped in a
future version."
This probably should be reflected in the code.
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