InsertQuery   (children 2)
 Identifier test_wide_map_tuple
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function tuple (children 1)
      ExpressionList (children 1)
       Identifier json
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier source
