When OpenAccess SDK is run in SQL pass-through mode, query processing is performed as follows:
The OpenAccess SDK SQL engine performs the parsing of the query.
The IP handles the execution of the query - including all joins, unions, and so on.
An IP working in SQL pass-through mode must exclusively use the API calls that are documented in this chapter when called to execute a statement through the EXECUTE entry point (OAIP_execute function of your IP).
The OpenAccess SDK SQL engine performs the parsing of the query.