Fix LP bug 1323865 -ODBC api test fails with Unknown PCode instruction During PCODE generation, we were attempting to generate a PCODE instruction to compare two operands for equality. The two operands had a data type of REC_BYTE_V_ASCII_LONG which is used only by ODBC. PCIT::getMemoryAddressingMode() does not currently know how to handle that datatype so it returned AM_NONE for the operand type. That resulted in a failure later.
Fix was to detect the operand(s) of that datatype and call ex_clause::pCodeGenerate(...) rather than doing PCODE generation of the current expression.
Note: Also found a line saying return ex_clause::pCodeGenerate(space, f); which has been missing for a long time. We got away with it because the preceding 'if' was always false for Trafodion.