* if there are any LeadLag functions in this Expression Tree: - setup a
* duplicate Evaluator for the 1st arg of the LLFuncDesc - initialize it
* using the InputInfo provided for this Expr tree - set the duplicate
* evaluator on the LLUDF instance.
*/
LeadLagInfo llInfo = qDef.getTranslationInfo().getLLInfo();
List<ExprNodeGenericFuncDesc> llFuncExprs = llInfo
.getLLFuncExprsInTopExpr(exprNode);
if (llFuncExprs != null)
{
for (ExprNodeGenericFuncDesc llFuncExpr : llFuncExprs)
{