Funnel step names cannot contain spaces

[hassankhan]

Describe the bug
When defining steps for a funnel as described in the docs, a step name with spaces in it cannot be used. For example, given a step name 'Awaiting Approval', the generated SQL for the step is as follows:

LEFT JOIN (
  select
    user_id user_id,
    created_at t
  from
     <STEP_QUERY>
) awaiting _approval_events ON negotiation_events.user_id = awaiting _approval_events.user_id
AND awaiting _approval_events.t >= negotiation_events.t

To Reproduce
Steps to reproduce the behavior:

1. Create a new funnel
2. Add a new step to the funnel with a name that has a space character
3. Attempt to run any query against the funnel cube
4. Get error Error: syntax error at or near "."

Expected behavior
I expected it to generate the SQL correctly i.e. awaiting _approval_events should be awaiting_approval_events

Version:
v0.15.0

[paveltiunov]

@hassankhan Hey Hassan! Thanks for posting this! Yep. It's known issue we need to fix.