SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function format (children 1)
       ExpressionList (children 2)
        Identifier JSONCompactEachRowWithNames
        Literal \'["x","y"]\\n[1,1]\\n[2]\\n[]\\n[3,3,3,3]\'
   Set
