influxdb遇到的问题

error parsing query: GROUP BY requires at least one aggregate function
因为加了GROUP BY time(1m)，可能同时有多个点，必须要有聚合函数汇聚成一个点，才能进行下一步。所以如果按时间聚合的话，必须要有聚合函数例如sum()之类的函数

SELECT sum("a" + "b" AS "c" FROM "tofino_bvr_vrouter_table" WHERE("A" =~ /^$A$/ )  AND $timeFilter GROUP BY time(1m),  "A"