but DBXDevartPostgreSQL exists in the uses list.Metadaten für PostgreSQL können nicht geladen werden. Add driver unit to your uses (DbxInterBase or DbxDb2 or DbxMsSql or DBXMySQL or DbxOracle or DbxSybaseASA or DbxSybaseASE).
Populating CommandText manually works.
But TSQLTable works just fine.
When using TSQLDataset with the CommandType ctQuery the Expert works, but there are no Fields of a Table offered for inserting.