Have a look here
http://www.flatmtn.com/computer/Linux-PostgreSQL.html
I think "use declare/fetch" is "FETCH"
' PG_ODBC_PARAMETER ACCESS_PARAMETER
' *********************************************
' READONLY A0
' PROTOCOL A1
' FAKEOIDINDEX A2 'A2 must be 0 unless A3=1
' SHOWOIDCOLUMN A3
' ROWVERSIONING A4
' SHOWSYSTEMTABLES A5
' CONNSETTINGS A6 'must be a value, blank is A6=;
' FETCH A7 'must be a value, try 100
' SOCKET A8 'default 4096
' UNKNOWNSIZES A9 ' range [0-2]
' MAXVARCHARSIZE B0 'must be a value, default 254
' MAXLONGVARCHARSIZE B1
' DEBUG B2
' COMMLOG B3
' OPTIMIZER B4 ' note that 1 = _cancel_ generic optimizer...
' KSQO B5
' USEDECLAREFETCH B6
' TEXTASLONGVARCHAR B7
' UNKNOWNSASLONGVARCHAR B8
' BOOLSASCHAR B9
' INVERSEBOOL? BI '"true is -1"?, 0=checked?
' PARSE C0
' CANCELASFREESTMT C1
' EXTRASYSTABLEPREFIXES C2 'must be a value, default dd_
