Why specify the database in a CQ statement

, ,
1

I have a measurement named “m1” in database “db1”, and I want to create a CQ to write the results to another measurement named “m2” in database “db2”.

CREATE CONTINUOUS QUERY "CQ" ON "db1"
BEGIN
  SELECT mean("value") INTO "db2.autogen.m2" FROM "m1" GROUP BY time(1h)
END

CREATE CONTINUOUS QUERY "CQ" ON "db2"
BEGIN
  SELECT mean("value") INTO "m2" FROM "db1.autogen.m1" GROUP BY time(1h)
END

both of the statement can fulfill my needs, so why not change the syntax to

CREATE CONTINUOUS QUERY <cq_name>
BEGIN
  SELECT <function[s]> 
  INTO <db1.rp1.destination_measurement> 
  FROM <db2.rp2.measurement> 
  [WHERE <stuff>] 
  GROUP BY time(<interval>)[,<tag_key[s]>]
END