count

The count function is an aggregate function, which counts the number of rows passing through it.

Count must be using in an aggregate type of expression.

Spec

count()

Parameters

None

Return Value

count - Int64 value

Example

// Count via summarize
range val from 1 to 5 step 1
| summarize count()

You can use the count expression via different types of aggregations. This will count per bucket.

range val from 1 to 5 step 1
| summarize count() by val