2 KiB
2 KiB
What does this MR do?
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Database checklist
- Conforms to the database guides
When adding migrations:
- Updated
db/schema.rb - Added a
downmethod so the migration can be reverted - Added the output of the migration(s) to the MR body
- Added tests for the migration in
spec/migrationsif necessary (e.g. when migrating data) - Added rollback procedure. Include either a rollback procedure or description how to rollback changes
When adding or modifying queries to improve performance:
- Included data that shows the performance improvement, preferably in the form of a benchmark
- Included the output of
EXPLAIN (ANALYZE, BUFFERS)of the relevant queries
When adding foreign keys to existing tables:
- Included a migration to remove orphaned rows in the source table before adding the foreign key
- Removed any instances of
dependent: ...that may no longer be necessary
When adding tables:
- Ordered columns based on the Ordering Table Columns guidelines
- Added foreign keys to any columns pointing to data in other tables
- Added indexes for fields that are used in statements such as
WHERE,ORDER BY,GROUP BY, andJOINs
When removing columns, tables, indexes or other structures:
- Removed these in a post-deployment migration
- Made sure the application no longer uses (or ignores) these structures
/label ~database ~"database::review pending"