ClickHouse/docs/en/operations/system-tables/numbers.md

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# system.numbers {#system-numbers}
This table contains a single UInt64 column named `number` that contains almost all the natural numbers starting from zero.
You can use this table for tests, or if you need to do a brute force search.
Reads from this table are not parallelized.
**Example**
```sql
:) SELECT * FROM system.numbers LIMIT 10;
```
```text
┌─number─┐
│ 0 │
│ 1 │
│ 2 │
│ 3 │
│ 4 │
│ 5 │
│ 6 │
│ 7 │
│ 8 │
│ 9 │
└────────┘
2021-07-29 15:20:55 +00:00
10 rows in set. Elapsed: 0.001 sec.
```
2021-06-24 12:47:02 +00:00
[Original article](https://clickhouse.tech/docs/en/operations/system-tables/numbers) <!--hide-->