support caseless keyword like general pg does about pgcat

[levkk]

They are already case-insensitive. Take a look at the regexes defined in query_router.rs, you'll note the (?i) notation. I think you might be on some old version of pgcat because I remember making them case-insensitive at some point. Try git pull origin main to update to latest version. Feel free to re-open if the bug re-occurs.

I think it's also possible that the issue you're facing is you're running the pooler in session mode and/or you're executing the SET SHARD command inside a transaction that's already assigned to a shard.

[DeoLeung]

I'm building from your #79 branch so it shall be up2date.

you're right, I got this error when I type the sql in my postico query IDE, if i did it from psql terminal, it works.

[levkk]

My guess Postico opens a transaction for you automatically before it executes your SQL. Once you're inside a transaction, you can't select a shard anymore because transactions have to run on a shard as soon as they are started and pgcat picks shard 0 by default in that case.