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Replace the unique constraint on library_item table with a unique index of userId and md5 hashed original url

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This commit is contained in:
Hongbo Wu 2023-09-24 19:14:23 +08:00
parent 6604c42bf4
commit e950662ced
2 changed files with 20 additions and 0 deletions
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10
packages/db/migrations/0127.do.replace_unique_index_on_library_item.sql Executable file
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-- Type: DO
-- Name: replace_unique_index_on_library_item
-- Description: Create a unique index of MD5 hashed url and userId on library item table
BEGIN;
ALTER TABLE omnivore.library_item DROP CONSTRAINT IF EXISTS library_item_user_id_original_url_key;
CREATE UNIQUE INDEX library_item_user_id_hashed_original_url_key ON omnivore.library_item (user_id, md5(original_url));
COMMIT;

10
packages/db/migrations/0127.undo.replace_unique_index_on_library_item.sql Executable file
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-- Type: UNDO
-- Name: replace_unique_index_on_library_item
-- Description: Create a unique index of MD5 hashed url and userId on library item table
BEGIN;
DROP INDEX IF EXISTS omnivore.library_item_user_id_hashed_original_url_key;
ALTER TABLE omnivore.library_item ADD CONSTRAINT library_item_user_id_original_url_key UNIQUE (user_id, original_url);
COMMIT;