Re: POC, WIP: OR-clause support for indexes

[jian he]

looking at it again. in match_orclause_to_indexcol

        /* Only the operator returning a boolean suits the transformation. */
        if (get_op_rettype(opno) != BOOLOID)
            break;

can change to

        if (subClause->opresulttype != BOOLOID)
            break;

for saving some cycles?