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30 lines
842 B
Markdown
30 lines
842 B
Markdown
---
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slug: /zh/sql-reference/table-functions/numbers
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sidebar_position: 39
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sidebar_label: numbers
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---
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# numbers {#numbers}
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`numbers(N)` – 返回一个包含单个 ‘number’ 列(UInt64)的表，其中包含从0到N-1的整数。
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`numbers(N, M)` - 返回一个包含单个 ‘number’ 列(UInt64)的表，其中包含从N到(N+M-1)的整数。
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类似于 `system.numbers` 表，它可以用于测试和生成连续的值, `numbers(N, M)` 比 `system.numbers`更有效。
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以下查询是等价的:
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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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示例:
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``` sql
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-- 生成2010-01-01至2010-12-31的日期序列
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select toDate('2010-01-01') + number as d FROM numbers(365);
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```
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[原始文章](https://clickhouse.com/docs/en/query_language/table_functions/numbers/) <!--hide-->
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