public override string FilterValues()
{
UpdateValues();
string val1 = Statement.EscapeQuotes(Value1.ToLower());
string col = String.Format("lower({0})", Column);
QueryFilterOperation op = QueryFilterOperation.GetByName(Filter);
if (op == null)
{
return(null);
}
else
{
return(op.FilterSql(true, col, val1, null));
}
}