# Pull Request Template
## Description
- Merges 3 separate COUNT queries in
`ConversationFinder#set_count_for_all_conversations` into a single query
using PostgreSQL `COUNT(*) FILTER (WHERE ...)`
- Every call to `/meta` and conversation index fires 3 COUNT queries
against the conversations table — one for "mine", one for "unassigned",
one for "all". These share the same base query and scan the same rows,
but execute as 3 independent round-trips.
from pg_stats
| Query | Calls | Total DB Time | Avg Latency |
|-------|-------|--------------|-------------|
| COUNT unassigned | 4.1M | 141,081 sec | 34ms |
| COUNT all | 4.1M | 132,302 sec | 32ms |
| COUNT mine | 3.7M | 37,637 sec | 10ms |
| **Total** | **~12M** | **311,020 sec** | |
`/meta` alone runs at 2.3K RPM (NewRelic), triggered on every WebSocket
event (conversation created/updated/status changed/assignee changed).
Fixes
https://linear.app/chatwoot/issue/INF-43/make-single-query-to-count-the-assigned-unassigned-and-all-instead-of
## Type of change
- [x] Performance fix
## How Has This Been Tested?
- [x] Verify conversation list shows correct
mine/unassigned/assigned/all counts
- [x] Verify /meta endpoint returns correct counts
- [x] Verify counts update correctly when assigning/unassigning
conversations
- [x] Verify counts with team filter applied
- [x] Monitor DB query count reduction in NewRelic after deploy
## Checklist:
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
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Co-authored-by: Sony Mathew <ynos1234@gmail.com>
