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Add extended statistics on package_derivations

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This helps row count estimates when filtering on system_id and target.
This commit is contained in:
Christopher Baines 2022-11-12 10:40:43 +00:00
parent 48d8ee885a
commit fb9d99a076
4 changed files with 24 additions and 0 deletions
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9
sqitch/deploy/package_derivations_extended_statistics.sql Normal file
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-- Deploy guix-data-service:package_derivations_extended_statistics to pg
BEGIN;
CREATE STATISTICS package_derivations_mcv (mcv) ON system_id, target FROM package_derivations;
CREATE STATISTICS package_derivations_ndistinct (ndistinct) ON system_id, target FROM package_derivations;
COMMIT;

7
sqitch/revert/package_derivations_extended_statistics.sql Normal file
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-- Revert guix-data-service:package_derivations_extended_statistics from pg
BEGIN;
-- XXX Add DDLs here.
COMMIT;

1
sqitch/sqitch.plan
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@ -90,3 +90,4 @@ fix_git_commits_duplicates 2022-06-17T10:39:50Z Chris <chris@felis> # Fix git_co
git_repositories_query_substitutes 2022-09-09T11:35:16Z Chris <chris@felis> # Add git_repositories.query_substitutes
package_derivations_id_package_id_idx 2022-09-14T09:24:30Z Chris <chris@felis> # Add index on package_derivations id and package_id
blocked_builds 2022-11-07T11:27:28Z Chris <chris@felis> # Add blocked_builds
package_derivations_extended_statistics 2022-11-12T10:40:18Z Chris <chris@felis> # Add extended statistics on package_derivations

7
sqitch/verify/package_derivations_extended_statistics.sql Normal file
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-- Verify guix-data-service:package_derivations_extended_statistics on pg
BEGIN;
-- XXX Add verifications here.
ROLLBACK;