Duplicate group snql bug

[volokluev]

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[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
314	1	313	2

View the top 1 failed test(s) by shortest run time

tests.test_snql_api.TestSnQLApi::test_buggy_query

Stack Traces | 0.624s run time

Traceback (most recent call last):
  File ".../snuba/tests/test_snql_api.py", line 163, in test_buggy_query
    assert response.status_code == 200, data
AssertionError: {'error': {'message': 'Duplicate column: group_id', 'type': 'internal_server_error'}}
assert 500 == 200
 +  where 500 = <WrapperTestResponse 113 bytes [500 INTERNAL SERVER ERROR]>.status_code

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