Introduce new patterns for direct sql that are safe and fast.
MiniSql is not prone to memory bloat that can happen with direct PG usage.
It also has an extremely fast materializer and very a convenient API
- DB.exec(sql, *params) => runs sql returns row count
- DB.query(sql, *params) => runs sql returns usable objects (not a hash)
- DB.query_hash(sql, *params) => runs sql returns an array of hashes
- DB.query_single(sql, *params) => runs sql and returns a flat one dimensional array
- DB.build(sql) => returns a sql builder
See more at: https://github.com/discourse/mini_sql
* don't update search index if post belongs to deleted topic
* log errors instead of crashing when updating post or revision fails
* update mentions even when the href attribute is missing
* run the background job with low priority
* replace username in all notifications
* update `action_code_who` used by small action posts
* FEATURE: Update avatars in posts and revisions when user gets renamed
* FIX: Replace username in deleted posts when user gets renamed
* FEATURE: Replace username in notifications when user gets renamed
FEATURE: Update mentions and quotes when user gets merged
