SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function JSONExtract (alias json) (children 1)
     ExpressionList (children 2)
      Identifier data
      Literal \'Tuple(a FixedString(24))\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_fixed_string_nested_json
