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23 lines
739 B
Markdown
23 lines
739 B
Markdown
# numbers
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`numbers(N)` — Returns a table with the single `number` column (UInt64) that contains integers from `0` to `N-1`.
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`numbers(N, M)` — Returns a table with the single `number` column (UInt64) that contains integers from `N` to `(N + M - 1)`.
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Similar to the `system.numbers` table, it can be used for testing and generating successive values. The `numbers(N, M)` function is more efficient than a selection from `system.numbers`.
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The following queries are equivalent:
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```sql
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SELECT * FROM numbers(10);
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SELECT * FROM numbers(0,10);
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SELECT * FROM system.numbers LIMIT 10;
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```
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Examples:
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```sql
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-- generate a sequence of all dates from 2010-01-01 to 2010-12-31
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select toDate('2010-01-01') + number as d FROM numbers(365);
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```
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