SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier CounterID
    Identifier dummy1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier merge
   Function notEquals (children 1)
    ExpressionList (children 2)
     Identifier dummy1
     Literal \'\'
   Literal UInt64_10