SelectWithUnionQuery (children 3)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function map (alias m) (children 1)
     ExpressionList (children 4)
      Literal \'key1\'
      Identifier number
      Literal \'key2\'
      Function multiply (children 1)
       ExpressionList (children 2)
        Identifier number
        Literal UInt64_2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 2)
        Literal UInt64_1
        Literal UInt64_1
 Identifier JSONEachRow
 Set
