furyou81 edited a comment on issue #15034:
URL: https://github.com/apache/superset/issues/15034#issuecomment-857697952


   so when using v1.2 I the time grain are there but I have an other issue.
   
   I have a field called DATETIME. I noticed that when the request was done it 
is using "DATETIME" and it fails as it is a reserved SQL word so I added a 
calculated column which modifies it so `` `DATETIME` `` using ` instead of ". 
And everything is working fine until I try to add a time range.
   
   If I add a time range, it is adding an additiona "DATETIME" as bellow:
   
   ``SELECT date_format(`DATETIME`, 'yyyy-MM-dd 00:00:00.000') AS __timestamp,
          COUNT(*) AS count
   FROM "default"."psr-2021-06"
   WHERE "DATETIME" >= '2021-05-31T00:00:00'
     AND "DATETIME" < '2021-06-07T00:00:00'
     AND `DATETIME` >= '2021-05-31T00:00:00'
     AND `DATETIME` < '2021-06-07T00:00:00'
   GROUP BY __timestamp
   LIMIT 10000;``
   
   
   I also tried to use an other field but it still tries to add "DATETIME".
   `SELECT COUNT(*) AS count
   FROM "default"."psr-2021-06"
   WHERE "DATETIME" >= '2021-05-31T00:00:00'
     AND "DATETIME" < '2021-06-07T00:00:00'
     AND "TIMESTAMP" >= 1622419200
     AND "TIMESTAMP" < 1623024000
   ORDER BY count DESC
   LIMIT 10000;`
   
   
   I also tried to delete DATETIME from the dataset on Superset and then it 
complains that the field DATETIME is not found event if I am not asking to use 
it


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