Scalar FunctionsOther Functions
dcount_hll
Calculate the distinct count from an HLL representation.
Syntax
dcount_hll(hll)Parameters
Prop
Type
Returns: long
Examples
Example 1
datatable(target:string)[
"Lindisfarne",
"York",
"Lindisfarne",
"Paris"
]
| summarize sketch = hll(target)
| project dcount_hll(sketch)| dcount_hll_sketch (long) |
|---|
| 3 |
current_table
Returns the table name for the current row. Used internally by the search operator.
otel_histogram_percentile
Extract a percentile from a merged OpenTelemetry histogram (output of otel_histogram_merge). Returns NaN for null, empty, or invalid histogram input, and for percentile values outside 0-100. For explicit histograms, uses linear interpolation within the target bucket. For exponential histograms, uses the geometric midpoint of the target bucket.