}
else {
String[] tabColAlias = getColAlias(selExpr, null, null, true, -1);
alias = tabColAlias[1];
}
WindowExpressionSpec exprSpec = new WindowExpressionSpec();
exprSpec.setAlias(alias);
exprSpec.setExpression(expr);
selSpec.add(exprSpec);
}
return selSpec;
}