CREATE INDEX NoSQLDBTEST ON NoSQLDB (concat(substr(updateDate, 0, 26),":",substr(updateDate, 26, 27)), updateDate, `number`, numberType)
WHERE (type = "com.model.CS") WITH { "num_replica":1 };
https://index-advisor.couchbase.com/indexadvisor/
https://docs.couchbase.com/server/current/n1ql/n1ql-language-reference/advise.html