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您的查询在语法上是正确的,但没有返回任何结果

SELECT mean("tup_inserted") AS "mean_tup_inserted" 
FROM "telegraf"."autogen"."postgresql" 
WHERE time > '2018-10-04T13:08:00.000Z' 
AND time < '2018-10-04T13:08:00.000Z' 
AND "db"='db_sige_mes_2018'
GROUP BY time(:interval:) FILL(null)
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