Can't the value filled by fill() command be included in the same calculation SQL statement in Apache IoTDB? I used the SQL statement with fill and try to do calculation based on certain data, and the result seems to be still null for the data points that I already set to use fill. Anyone know why this happened?
In Apache IoTDB, the execution order of fill is relatively late. For example, for this statement select s1+s2 from root.db.d1 fill(previous), IoTDB will first calculate s1+s2 and then execute fill according to the calculation result. If you want to get the result after fill, you can just execute show results again.