Pass several queries to Postgres at the same time and have the results returned together

It would be useful if we could chain one query made up of multiple other queries and send them all to the server at once (for performance reasons) rather than as multiple separate queries. And the results would be returned together.

select firstfunction($1, $2); select secondfunction($3, $4, $5, $6); select thirdfunction($7);

In this example there would only be one roundtrip from the application to the database rather than 3. And there would be something like an array of 3 results because there are 3 queries.

I can make a Postgres function for things like this but that’s less useful in cases like this where you can have several different combinations of queries you’re sending to the server from various parts of your application, and you wouldn’t want to be making several Postgres functions for each combination of queries you’ll send to the database.

I see https://github.com/brianc/node-postgres/wiki/Parameterized-queries-and-Prepared-Statements#multi-statement-parameterized-queries but I mean batching the queries on the client (node-postgres) rather than in Postgres itself.

[brianc]

I’m going to close this but keep that old stale PR open so I’ll have a reminder to fix it. Thanks for drawing it to my attention! ❤️

[rightaway]

I don’t know if a real performance improvement can be expected from this.

Wouldn’t it increase performance by saving round trips to the database? Why do you think it might not have a real improvement?