SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 5)
    Identifier x
    Identifier y
    Identifier z
    Function nested (children 1)
     ExpressionList (children 4)
      Literal Array_[\'a\', \'b\', \'c\']
      Identifier x
      Identifier y
      Identifier z
    Function nested (children 1)
     ExpressionList (children 4)
      Literal Array_[Array_[\'a\', \'b\', \'c\']]
      Identifier x
      Identifier y
      Identifier z
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.one
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 3)
       Literal Array_[Array_[Array_[UInt64_1, UInt64_2], Array_[UInt64_3]], Array_[Array_[UInt64_4], Array_[UInt64_5, UInt64_6]]] (alias x)
       Literal Array_[Array_[Array_[UInt64_7, UInt64_8], Array_[UInt64_9]], Array_[Array_[UInt64_10], Array_[UInt64_11, UInt64_12]]] (alias y)
       Literal Array_[Array_[Array_[UInt64_13, UInt64_14], Array_[UInt64_15]], Array_[Array_[UInt64_16], Array_[UInt64_17, UInt64_18]]] (alias z)
 Identifier Pretty
