Jialin Qiao created IOTDB-1391: ---------------------------------- Summary: Add a new Aggregation function ext Key: IOTDB-1391 URL: https://issues.apache.org/jira/browse/IOTDB-1391 Project: Apache IoTDB Issue Type: New Feature Reporter: Jialin Qiao
Add a new aggregation function: ext Return the value that has the maximum absolute value. If the maximum absolute value of a positive value and a negative value is equal, return the positive value. For example: time:1,2,3,4,5 value:1,10,-4,3,4 select ext(s1) from root.sg.d where time >=1 and time <=5 return 10 select ext(s1) from root.sg.d where time >=3 and time <=4 return -4 select ext(s1) from root.sg.d where time >=3 and time <=5 return 4 -- This message was sent by Atlassian Jira (v8.3.4#803005)