ClickHouse/docs/en/sql-reference/statements/select/all.md

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toc_title: ALL
---

# ALL Clause {#select-all}

If there are multiple matching rows in the table, then `ALL` returns all of them. `SELECT ALL` is identical to `SELECT` without `DISTINCT`. If both `ALL` and `DISTINCT` specified, exception will be thrown.


`ALL` can also be specified inside aggregate function with the same effect(noop), for instance:

```sql
SELECT sum(ALL number) FROM numbers(10);
```
equals to

```sql
SELECT sum(number) FROM numbers(10);
```

[Original article](https://clickhouse.tech/docs/en/sql-reference/statements/select/all) <!--hide-->