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| author | Christopher Baines <mail@cbaines.net> | 2020-08-23 14:40:17 +0100 |
|---|---|---|
| committer | Christopher Baines <mail@cbaines.net> | 2020-08-23 14:42:32 +0100 |
| commit | c7048abe31dc4903343eb3d598363dc23c2a1e46 (patch) | |
| tree | 1a888696c3bc220b1f813a227ebacaf61b3055f6 /sqitch/deploy | |
| parent | 599c621b88c39e7d7e68912841fd2209bebf2d12 (diff) | |
| download | data-service-c7048abe31dc4903343eb3d598363dc23c2a1e46.tar data-service-c7048abe31dc4903343eb3d598363dc23c2a1e46.tar.gz | |
Change a package_descriptions index to use MD5 of the description
To avoid the index data being too large.
This was first seen in guix commit 1bb4fd64b7bbe5a17eda6f0ca8105283c038f7c8:
psql-query-error (fatal-error PGRES_FATAL_ERROR ERROR: index row size 2808
exceeds maximum 2712 for index "package_descriptions_locale_description_key"
HINT: Values larger than 1/3 of a buffer page cannot be indexed.
Diffstat (limited to 'sqitch/deploy')
| -rw-r--r-- | sqitch/deploy/change_package_descriptions_index.sql | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sqitch/deploy/change_package_descriptions_index.sql b/sqitch/deploy/change_package_descriptions_index.sql new file mode 100644 index 0000000..da6b7f7 --- /dev/null +++ b/sqitch/deploy/change_package_descriptions_index.sql @@ -0,0 +1,11 @@ +-- Deploy guix-data-service:change_package_descriptions_index to pg + +BEGIN; + +ALTER TABLE package_descriptions DROP CONSTRAINT + package_descriptions_locale_description_key; + +CREATE UNIQUE INDEX package_descriptions_locale_description_key + ON package_descriptions USING btree (locale, MD5(description)); + +COMMIT; |