Add functions to SHOW TAG KEYS and SHOW FIELD KEYS

[tuykroa]

Then supported these 2 new functions : SHOW TAG KEYS & SHOW FIELD KEYS
like InfluxDB show field keys in query-language
https://docs.influxdata.com/influxdb/v1.7/query_language/schema_exploration/#show-field-keys

[x]Controlled

If you accept my contribution to this feature

[tuykroa]

Due error, submit changes without spaces in comments

[tuykroa]

Then supported these 2 new functions : SHOW TAG KEYS & SHOW FIELD KEYS
like InfluxDB show field keys in query-language
https://docs.influxdata.com/influxdb/v1.7/query_language/schema_exploration/#show-field-keys

[x]Controlled
[x]Verified
If you accept my contribution to this feature

[sebito91]

Thanks for the commit @tuykroa, really appreciate your help! If you're still interested in merging this PR can I please ask you to do the following:

• flush out the show tag keys command similar to what the documentation calls for, including capability to drill down on specific db or measurement
• flush out the show field keys command similar to the above
• add tests for show tag keys
• add tests for show field keys

You can use

influxdb-python/influxdb/client.py

Line 649 in 8a8b8ff

def get_list_series(self, database=None, measurement=None, tags=None):

as an example.

Thanks!

[sebito91]

@tuykroa just following up to see if you were able to make some progress here?

[one4many]

I'm depending on this ... when does it get reviewed?