Aggregations - ValueError: need at least one field
quintonparker opened this issue · comments
So I want to run a simple aggregation that SUMs a field for all the matched records like this
127.0.0.1:6379> "FT.AGGREGATE" "analytics:search" "@ts:[1585692000000 1588284000000]" "GROUPBY" "0" "REDUCE" "SUM" "1" "@clicks" "AS" "total_clicks"
1) (integer) 1
2) 1) "total_clicks"
2) "20"
That works as expected
But when I try the following...
queries.append(
aggregation.AggregateRequest(
f"@ts:[{startTs} {endTs}]"
).group_by([], reducers.sum('@clicks').alias('total_clicks'))
)
I get this...
Traceback (most recent call last):
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 2464, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/Users/quintonparker/workspace/blah/app.py", line 190, in analytics
).group_by([], reducers.count().alias('total_queries'))
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/redisearch/aggregation.py", line 205, in group_by
group = Group(fields, reducers)
File "/Users/quintonparker/workspace/blah/.venv/lib/python3.7/site-packages/redisearch/aggregation.py", line 90, in __init__
raise ValueError('need at least one field')