A way to reuse a '?' in a query ?

Question

Hello,
Suppose I have this query:
SELECT x FROM t WHERE t.a=? AND t.b=? AND t.c=?
But I need to have some felxibility on the order of the bind variables, and the ability to reuse them. Something like:
SELECT x FROM t WHERE t.a=?2 AND t.b=?1 AND t.c=?2
(In this case, we reuse the recond '?', and we put an arbitrary order).
It allows flexibility. So we don't have to change the java code (if it is necessary to change the order of calling the different Statement.setXXX()).
I made a wrapping in the Statement object my self to resolve this ussue by preparsing these '?n' where 'n' is the parameter number n, but I don't like the idea of wrapping every stuff.
Anybody has an idea on this ?
Thanks
Riad

Answer 1

Shuffling around bound parameters is a reasonably low-level concept. The easiest way around it is to execute the query dynamically, as in "select x from" + sTableName + " where " + x + " = " + y.... rather than using bind parameters.
slag