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Michael, thanks for your response. I am using Delphi XE2, 32-bit with rangechecking turned on. The method GetMySQLColumnInfoFromFieldHandle uses a local variable "fieldlength" which is declared as integer. My issue is not with the Ulong type, but with the type of that variable in this func...

The type integer of the Fieldlength variable in ZdbcMySQLUtils.pas, function GetMySQLColumnInfoFromFieldHandle does not match the return type ULong of IZMySQLPlainDriver.GetFieldLength.

I get a range check error when executing my code.
Please check.

Kind regards
Gunnar Adams

I am evaluating zeoslib for my project. Is there a way to identify standard SQL errors (like for instance a Unique Key violation) by any other means than doing a string comparison with a implementation-dependent error string? How can I retrieve either the native error code (from looking at the DBC c...