>In that case, the result set is no longer a table, it's a dataframe, which is a useful data structure but is also not what relational databases do. What do yo

>In that case, the result set is no longer a table, it's a dataframe, which is a useful data structure but is also not what relational databases do. What do you mean here? The difference between a table and a dataframe is that a dataframe is a construct held in memory, while a table is persisted storage written to a database.