下面是你可以在 Druid 上尝试进行查询的一些实例供你测试:
SELECTFLOOR(__timetoHOUR)ASHourTime,SUM(deleted)ASLinesDeletedFROMwikipediaWHERE"__time"BETWEENTIMESTAMP'2015-09-12 00:00:00'ANDTIMESTAMP'2015-09-13 00:00:00'GROUPBY1

SELECTchannel, page,SUM(added)FROMwikipediaWHERE"__time"BETWEENTIMESTAMP'2015-09-12 00:00:00'ANDTIMESTAMP'2015-09-13 00:00:00'GROUPBYchannel, pageORDERBYSUM(added)DESC

Druid 能够进行一些比较灵活的查询,因此对基本的 SQL 掌握还是需要的。
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