Luca Ferrari <fluca1978@xxxxxxxxxxx> writes: > ok this is a silly question, but I've got a doubt: what is the exact meaning > of Datum? It's the backend-internal representation of a single value of any SQL data type. The code using the Datum has to know which type it is, since the Datum itself doesn't contain that information. Usually, C code will work with a value in a "native" representation, and then convert to or from Datum in order to pass the value through data-type-independent interfaces. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
