pdeva commented on issue #7584: Cant refer to variables declared inside sql statements for post aggregations URL: https://github.com/apache/incubator-druid/issues/7584#issuecomment-489762176 @vogievetsky here is an example: 1. MySQL query with `GROUP BY` using variable `s` ```sql select count(*), dataSource AS s from druid_rules group by s; ``` Works as expected 2. Druid SQL query with `GROUP BY` using variable `gran` : ```sql SELECT sum ("mem_used") as memUsed, TIME_FLOOR("__time", 'PT2S') as gran FROM "metrics" WHERE "__time" >= TIMESTAMP '2019-05-06 19:32:42' AND "__time" < TIMESTAMP '2019-05-06 19:32:48' GROUP BY gran ``` Result: ``` Bad Request: Unknown exception: org.apache.calcite.runtime.CalciteContextException: Column 'gran' not found in any table ```
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