25.02.2017 12:37, Mark Rotteveel wrote: >> Do you/anyone know if these engines return full results sets or follow the >> "page set" approach? > > As far as I know Oracle[1], PostgreSQL[2], SQL Server[3] support it. I > believe MySQL does as well. Don't know about other database systems, but > I assume most of them will support this (the SQL CLI standard also > defines it).
AFAIK, in these databases page sets are primarily a transport/API feature. The important question, however, is whether the engine does some work during fetch() besides copying the row(s) for the next batch. I suspect InterBase/Firebird is the only engine that may process execute() as a no-op and perform all the data retrieval / joining / etc during fetching. Dmitry ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
