hash_md5()
Returns an MD5 hash value of the input.
Syntax
hash_md5(source)
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| source | scalar | ✔️ | The value to be hashed. |
Returns
The MD5 hash value of the given scalar, encoded as a hex string (a string of characters, each two of which represent a single Hex number between 0 and 255).
Warning
The algorithm used by this function (MD5) is guaranteed to not be modified in the future, but is very complex to calculate. Users that need a "lightweight" hash function for the duration of a single query are advised to use the function hash() instead.
Examples
print
h1=hash_md5("World"),
h2=hash_md5(datetime(2020-01-01))
Output
| h1 | h2 |
|---|---|
| f5a7924e621e84c9280a9a27e1bcb7f6 | 786c530672d1f8db31fee25ea8a9390b |
The following example uses the hash_md5() function to aggregate StormEvents based on State's MD5 hash value.
StormEvents
| summarize StormCount = count() by State, StateHash=hash_md5(State)
| top 5 by StormCount
Output
| State | StateHash | StormCount |
|---|---|---|
| TEXAS | 3b00dbe6e07e7485a1c12d36c8e9910a | 4701 |
| KANSAS | e1338d0ac8be43846cf9ae967bd02e7f | 3166 |
| IOWA | 6d4a7c02942f093576149db764d4e2d2 | 2337 |
| ILLINOIS | 8c00d9e0b3fcd55aed5657e42cc40cf1 | 2022 |
| MISSOURI | 2d82f0c963c0763012b2539d469e5008 | 2016 |