Execute a statement prepared with odbc_prepare/4
with the given
ParameterValues and return the rows or number of affected
rows as odbc_query/4.
This predicate may return type_error exceptions if the provided
parameter values cannot be converted to the declared types.
ODBC doesn't appear to allow for multiple cursors on the same
result-set.5Is this right?
This would imply there can only be one active odbc_execute/3
(i.e. with a choice-point) on a prepared statement. Suppose we have a
table age (name char(25), age integer) bound to the
predicate age/2 we cannot write the code
below without special precautions. The ODBC interface therefore creates
a clone of a statement if it discovers the statement is being executed,
which is discarded after the statement is finished.6The
code is prepared to maintain a cache of statements. Practice should tell
us whether it is worthwhile activating this.
same_age(X, Y) :-
age(X, AgeX),
age(Y, AgeY),
AgeX = AgeY.
