SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier CounterID
    Identifier dummy
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier merge
   Function notEquals (children 1)
    ExpressionList (children 2)
     Identifier dummy
     Literal \'\'
   Literal UInt64_10