SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function tupleElement (children 1)
     ExpressionList (children 2)
      Function arrayJoin (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 1)
          Literal Tuple_(UInt64_1, UInt64_1)
      Literal UInt64_1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier A1
   Function equals (children 1)
    ExpressionList (children 2)
     Function tupleElement (children 1)
      ExpressionList (children 2)
       Literal Tuple_(UInt64_1, UInt64_1)
       Literal UInt64_1
     Literal UInt64_1
