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Merge pull request #17122 from taosdata/wangmm0220-patch-4 

Update 03-opentsdb-telnet.mdx
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wade zhang 2022-09-28 17:32:04 +08:00 committed by GitHub
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@ -31,7 +31,7 @@ For example:
```txt
meters.current 1648432611250 11.3 location=California.LosAngeles groupid=3
```
- The defult child table name is generated by rules.You can configure smlChildTableName in taos.cfg to specify chile table names, for example, `smlChildTableName=tname`. You can insert `meters.current 1648432611250 11.3 tname=cpu1 location=California.LosAngeles groupid=3` and the cpu1 table will be automatically created. Note that if multiple rows have the same tname but different tag_set values, the tag_set of the first row is used to create the table and the others are ignored.
Please refer to [OpenTSDB Telnet API](http://opentsdb.net/docs/build/html/api_telnet/put.html) for more details.
## Examples
@ -79,3 +79,6 @@ taos> select tbname, * from `meters.current`;
t_7e7b26dd860280242c6492a16... | 2022-03-28 09:56:51.250 | 12.600000000 | 2 | California.SanFrancisco |
Query OK, 4 row(s) in set (0.005399s)
```
## Query Examples
If you want query the data of `location=California.LosAngeles groupid=3`，here is the query sql：
select * from `meters.voltage` where location="California.LosAngeles" and groupid=3