Hello hackers,

Here is a summary of what was implemented over the summer in PL/Julia:

1. Added support for more datatypes as input and output:
NULL, boolean, numeric types, composite types, arrays of base types can now
be passed as input arguments to PL/Julia functions. Users can also return
the above, or sets of the above from PL/Julia UDFs.
2. Added trigger support - users can write trigger functions in PL/Julia
3. Added event trigger support
4. Added support for the DO command
5. Added functions for database access from PL/Julia:
spi_exec(query, limit) and spi_exec(query) for SQL-statement execution,
spi_fetchrow(cursor) and spi_cursor_close(cursor) to return rows and to
close the cursor respectively,
spi_prepare(query, argtypes) to prepare and save an execution plan and
spi_exec_prepared(plan, args, limit) to execute a previously prepared plan.

A brief presentation of the above
https://docs.google.com/presentation/d/1cTnsUWiH6o0YH6MlZoPLofna3eNT3P3r9HSL9Dyte5U/edit?usp=sharing
Documentation with use examples
https://gitlab.com/konskov/pljulia/-/blob/main/README.md

Currently the extension works for version 13 and Julia versions >= 1.6
(Thanks to Imre Samu for testing!)

I hope you find it interesting.

Regards,
Konstantina

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