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25 lines
802 B
Markdown
25 lines
802 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, `numbers(N, M)` more efficient than `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 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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[Original article](https://clickhouse.yandex/docs/en/query_language/table_functions/numbers/) <!--hide-->
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