# X_N_PLUS_ONE_WRITE

## Means

a write repeated once per row

## Typical cause

one `insert`, `update` or `delete` per row of a set, where one statement writes all of them. Same four surfaces as the read above, same ledger, and the same throw inside the `statements` fixture

## Fix

the bulk form of the same call: `db.posts.insertAll(rows)`, `db.posts.updateWhere(filter, patch)`, `db.posts.deleteWhere(filter)` — or `expectedQueryLoop('<why>', fn)` when the loop is deliberate

[Entity and database](/error-codes#entity-and-database)