SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sum (alias v) (children 1)
     ExpressionList (children 1)
      Identifier c1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Literal UInt64_1 (alias c1)
           Literal Array_[\'v\'] (alias c2)
   Function arrayExists (children 1)
    ExpressionList (children 2)
     Function lambda (children 1)
      ExpressionList (children 2)
       Function tuple (children 1)
        ExpressionList (children 1)
         Identifier v
       Function equals (children 1)
        ExpressionList (children 2)
         Identifier v
         Literal \'v\'
     Identifier c2