Hello hackers,
The `json_populate_recordset` and `json_agg` functions allow systems to process/generate json directly on the database. This "cut outs the middle tier"[1] and notably reduces the complexity of web applications.
CSV processing is also a common use case and PostgreSQL has the COPY .. FROM .. CSV form but COPY is not compatible with libpq pipeline mode and the interface is clunkier to use.
I propose to include two new functions:
- csv_populate_recordset ( base anyelement, from_csv text )
- csv_agg ( anyelement )
I would gladly implement these if it sounds like a good idea.
I see there's already some code that deals with CSV on
- src/backend/commands/copyfromparse.c(CopyReadAttributesCSV)
- src/fe_utils/print.c(csv_print_field)
- src/backend/utils/error/csvlog(write_csvlog)
So perhaps a new csv module could benefit the codebase as well.
Best regards,
Steve