fix: correct style issues and bugs in ivy_guc.c#3
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- Fix typo: "shown as blow" -> "shown below" - Fix duplicate period in error hint message - Fix null terminator placement in nls_case_conversion function - Remove extra blank lines for consistent code style - Add missing period in Apache License header Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
OreoYang
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Mar 13, 2026
There've been a few complaints that it can be overly difficult to figure out why the planner picked a Memoize plan. To help address that, here we adjust the EXPLAIN output to display the following additional details: 1) The estimated number of cache entries that can be stored at once 2) The estimated number of unique lookup keys that we expect to see 3) The number of lookups we expect 4) The estimated hit ratio Technically #4 can be calculated using #1, #2 and #3, but it's not a particularly obvious calculation, so we opt to display it explicitly. The original patch by Lukas Fittl only displayed the hit ratio, but there was a fear that might lead to more questions about how that was calculated. The idea with displaying all 4 is to be transparent which may allow queries to be tuned more easily. For example, if #2 isn't correct then maybe extended statistics or a manual n_distinct estimate can be used to help fix poor plan choices. Author: Ilia Evdokimov <ilya.evdokimov@tantorlabs.com> Author: Lukas Fittl <lukas@fittl.com> Reviewed-by: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Andrei Lepikhov <lepihov@gmail.com> Reviewed-by: Robert Haas <robertmhaas@gmail.com> Discussion: https://postgr.es/m/CAP53Pky29GWAVVk3oBgKBDqhND0BRBN6yTPeguV_qSivFL5N_g%40mail.gmail.com
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Summary
This PR fixes several style issues and bugs in
src/backend/utils/misc/ivy_guc.c:nls_case_conversionfunction (lines 537, 545)Test Plan
make oracle-check)Files Changed
src/backend/utils/misc/ivy_guc.c: 1 file changed, 14 insertions(+), 17 deletions(-)🤖 Generated with Claude Code