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dbexppgsql.dll = 1.0.0.4
DELPHI 7
ENABLE BCD = TRUE

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select cast(0 as numeric) as tpnumeric; <----- mapping (FLOAT)

select cast(0 as numeric(10,2)) as tpnumeric; <----- mapping (FMTBCD)

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is this a BUG ?

This is designed behaviour. But in the next build of the driver we will change this behaviour to use TFMTBCDField for numeric fieds without precision.