Files
payloadcms/packages/db-sqlite
Sasha 513ba636af fix(db-postgres): ensure countDistinct works correctly and achieve better performance when the query has table joins (#11208)
The fix, added in https://github.com/payloadcms/payload/pull/11096
wasn't sufficient enough. It did handle the case when the same query
path / table was joined twice and caused incorrect `totalDocs`, but it
didn't handle the case when `JOIN` returns more than 1 rows, which 2
added new assertions here check.

Now, we use `COUNT(*)` only if we don't have any joined tables. If we
do, instead of using `SELECT (COUNT DISTINCT id)` which as described in
the previous PR is _very slow_ for large tables, we use the following
query:

```sql
SELECT COUNT(1) OVER() as count -- window function, executes for each row only once
FROM users
LEFT JOIN -- ... here additional rows are added
WHERE -- ...
GROUP BY users.id -- this ensures we're counting only users without additional rows from joins. 
LIMIT 1 -- Since COUNT(1) OVER() executes and resolves before doing LIMIT, we can safely apply LIMIT 1.
```
2025-02-16 14:08:08 +02:00
..
2025-02-11 12:53:51 -05:00

Payload SQLite Adapter

Official SQLite adapter for Payload.

Installation

npm install @payloadcms/db-sqlite

Usage

import { buildConfig } from 'payload/config'
import { sqliteAdapter } from '@payloadcms/db-sqlite'

export default buildConfig({
  db: sqliteAdapter({
    client: {
      url: process.env.DATABASE_URI,
    },
  }),
  // ...rest of config
})

More detailed usage can be found in the Payload Docs.