influxdb语句
时间: 2024-05-31 14:06:28 浏览: 117
InfluxDB是一个开源的时序数据库,专门用于存储和处理时间序列数据。下面是InfluxDB的一些常用语句:
1. 创建数据库:
CREATE DATABASE database_name
2. 删除数据库:
DROP DATABASE database_name
3. 创建数据表:
CREATE RETENTION POLICY policy_name ON database_name DURATION duration REPLICATION replication DEFAULT
4. 删除数据表:
DROP MEASUREMENT measurement_name
5. 写入数据:
INSERT INTO measurement_name,tag_key=tag_value field_key=field_value timestamp
6. 查询数据:
SELECT field_key FROM measurement_name WHERE tag_key=tag_value AND time > start_time AND time < end_time GROUP BY time(interval) [ORDER BY time DESC] [LIMIT n]
7. 聚合查询:
SELECT AGGREGATE(field_key) FROM measurement_name WHERE tag_key=tag_value AND time > start_time AND time < end_time GROUP BY time(interval) [ORDER BY time DESC] [LIMIT n]
8. 删除数据:
DELETE FROM measurement_name WHERE tag_key=tag_value AND time > start_time AND time < end_time
以上是InfluxDB的常用语句,具体使用可以参考官方文档。如果您有任何相关问题,欢迎继续提问。
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