Re: More efficient RI checks - take 2

Antonin Houska <ah(at)cybertec(dot)at> wrote:

> In general, the checks are significantly faster if there are many rows to
> process, and a bit slower when we only need to check a single row.

Attached is a new version that uses the existing simple queries if there's
only one row to check. SPI is used for both single-row and bulk checks - as
discussed in this thread, it can perhaps be replaced with a different approach
if appears to be beneficial, at least for the single-row checks.

I think using a separate query for the single-row check is more practicable
than convincing the planner that the bulk-check query should only check a
single row. So this patch version tries to show what it'd look like.

--
Antonin Houska
Web: https://www.cybertec-postgresql.com