PG18: error "Don't know how to print 64bit integers"

[df7cb]

When building against PG18 (after removing the version check), the build fails because PG18 removes the custom format string macros. PRId64 is the usual workaround.

[df7cb]

@dimitri any chance you could have a look?

[dimitri]

Thank you @df7cb for the clear diagnosis and for not stopping at just reporting — submitting #1103 with the PRId64 fix directly was a huge help and it was merged promptly.

That fix is now also part of #1144 (merged 2026-07-15), which bundles PG17, PG18, and PG19 support together with full CI coverage. PG18 Citus support is included via CITUSTAG_18=v14.1.0; PG19 runs cleanly on all non-Citus tests (no Citus release targets PG19 yet). Thanks again for the contribution.