Doslin opened a new issue #8973: Why generated __subquery__ and use DruidOuterQueryRel URL: https://github.com/apache/incubator-druid/issues/8973 #### how to write this with json context ``` SELECT "Time", sum("<3"),sum("3~5"),sum("6~15") from ( SELECT "Time", case WHEN "Count1" < 3 then 1 ELSE 0 end as "<3", case WHEN "Count1" >= 3 and "Count1"<= 5 then 2 ELSE 0 end as "3~5", case WHEN "Count1" >= 6 and "Count1"<= 15 then 3 ELSE 0 end as "6~15" from ( SELECT TIME_FLOOR("__time", 'PT5M') AS "Time", "uuid", COUNT(*) AS "Count1" FROM "app_time" WHERE "__time" >= CURRENT_TIMESTAMP - INTERVAL '1' HOUR AND "__time" <= CURRENT_TIMESTAMP GROUP BY 1, 2 ORDER BY "Time" ASC )) GROUP BY 1 ORDER BY "Time" ``` When i use EXPLAIN PLAN FOR to see plan , I saw ``` DruidOuterQueryRel(query=[{"queryType":"groupBy","dataSource":{"type":"table","name":"__subquery__"}....... ``` But I don't have this data source，How can I do
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