66 lines
1.7 KiB
Markdown
66 lines
1.7 KiB
Markdown
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The `LIMIT` clause limits the number of rows returned by a query to a specified non-negative integer.
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- [Syntax](#syntax)
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- [Examples](#examples)
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## Syntax
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```sql
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SELECT_clause FROM_clause [WHERE_clause] [GROUP_BY_clause] [ORDER_BY_clause] LIMIT <N>
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```
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## Examples
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### Limit results to a maximum of five rows
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```sql
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SELECT
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"water_level","location", "time"
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FROM
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"h2o_feet"
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LIMIT
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5
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```
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{{< expand-wrapper >}}
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{{% expand "View example results" %}}
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The query returns a maximum of 5 results.
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| location | time | water_level |
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| :----------- | :----------------------- | ----------- |
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| coyote_creek | 2019-08-28T00:00:00.000Z | 4.206 |
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| coyote_creek | 2019-08-28T00:06:00.000Z | 4.052 |
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| coyote_creek | 2019-08-28T00:12:00.000Z | 3.901 |
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| coyote_creek | 2019-08-28T00:18:00.000Z | 3.773 |
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| coyote_creek | 2019-08-28T00:24:00.000Z | 3.632 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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### Sort and limit results
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Use the `ORDER BY` and `LIMIT` clauses to first sort results by specified columns,
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then limit the sorted results by a specified number.
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```sql
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SELECT
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"water_level", "location", "time"
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FROM
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"h2o_feet"
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ORDER BY
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"water_level" DESC
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LIMIT
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3
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```
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{{< expand-wrapper >}}
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{{% expand "View example results" %}}
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The query returns the highest 3 `water_level` readings in the `h2o_feet` measurement.
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| location | time | water_level |
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| :----------- | :----------------------- | ----------- |
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| coyote_creek | 2019-08-27T13:42:00.000Z | -0.561 |
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| coyote_creek | 2019-08-29T15:24:00.000Z | -0.571 |
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| coyote_creek | 2019-08-28T14:24:00.000Z | -0.587 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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