Question

我在下面给出了sampleMeasurement1;我想更新InfluxDB中各列的值。如何更新这些值？

SELECT * FROM sampleMeasurement1; 
{ "results": [ { "series": [ { "name": "sampleMeasurement1", "columns": [ "time", "disk_type", "field1", "field2", "hostname" ], "values": [ [ 1520315870774000000, null, 12212, 22.44, "server001" ], [ 1520315870843000000, "HDD", 112, 21.44, "localhost" ] ] } ] } ] }

Answer 1

我们无法通过InfluxDB命令更改标记值，但我们可以编写一个客户端脚本，通过插入＆＃34;复制＆＃34;来更改标记的值。使用相同的时间戳，字段集和标记集在测量中指向，但所需的标记将更改其值。

指向错误标记（https://docs.influxdata.com/influxdb/v1.4/write_protocols/line_protocol_reference/#syntax）：

cpu，hostname = machine.lan cpu = 50 1514970123 运行后

INSERT cpu，hostname = machine.mydomain.com cpu = 50 1514970123 SELECT * FROM CPU将包含

cpu，hostname = machine.lan cpu = 50 1514970123 cpu，hostname = machine.mydomain.com cpu = 50 1514970123 脚本运行所有INSERT命令后，您需要删除旧的标记值的过时系列点：

DROP SERIES FROM cpu WHERE hostname =＆＃39; machine.lan＆＃39;

Change tag value in InfluxDB

更改InfluxDB中各列的值

1 个答案: