CODEWITHSUNDEEP
fillapache-iotdb
leonbear
leonbear

Reputation: 196

After using `fill()`, why did the fields set still reported `null` value in Apache IoTDB?

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?

Upvotes: 0

Views: 20

Answers (1)

Hester Tso
Hester Tso

Reputation: 350

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.

Upvotes: 1

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