InsertQuery   (children 2)
 Identifier test_compact_map_with_buckets_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
