hash_many()
Applies to: ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel
Returns a combined hash value of multiple values.
Syntax
hash_many(s1 , s2 [, s3 ...])
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| s1, s2, ..., sN | scalar | ✔️ | The values to hash together. |
Returns
The hash() function is applied to each of the specified scalars. The resulting hashes are combined into a single hash and returned.
Warning
The function uses the xxhash64 algorithm to calculate the hash for each scalar, but this may change. We therefore only recommend using this function within a single query where all invocations of the function will use the same algorithm.
If you need to persist a combined hash, we recommend using hash_sha256(), hash_sha1(), or hash_md5() and combining the hashes into a single hash with a bitwise operator. Note that these functions are more complex to calculate than hash().
Examples
print value1 = "Hello", value2 = "World"
| extend combined = hash_many(value1, value2)
Output
| value1 | value2 | combined |
|---|---|---|
| Hello | World | -1440138333540407281 |