InfluxDB is a popular time series databases. Its popularity comes from the fact that it is relatively easy to set up, it has relatively high performances, and InfluxQL, a simple SQL-like query language (which is being superseded by flux for a host of reasons).

That said, DB management functions are really important and while playing around with your algorithms (e.g., while doing time series forecasting) you might end up generating quite a few measurements (Influx jargon for table/collection) which we might want to delete at one…If it wasn’t for the fact we can’t!
At least we can drop the whole database (let’s say we have a db named forecasting):

but if that solution does not work for you (e.g., because you do not have such right, or because you set up some specific retention policies) we are left with a couple of solutions.

Solution 1 does not work on all versions, it is slow, but can be invoked from within Influx shell:

Solution 2 is a simple bash script: