Examples of types returned are "IIAPI_BYTE_TYPE", "IIAPI_CHA_TYPE", "IIAPI_DTE_TYPE", "IIAPI_FLT_TYPE", "IIAPI_INT_TYPE", "IIAPI_VCH_TYPE".
Certains de ces types correspondent à plus d'un type SQL, selon la taille du champ (voir ingres_field_length()).