Function types
Functions are reusable queries or query parts. Kusto supports several kinds of functions:
- Stored functions, which are user-defined functions that are stored and managed a one kind of a database's schema entities. See Stored functions.
- Query-defined functions, which are user-defined functions that are defined and used within the scope of a single query. The definition of such functions is done through a let statement. See User-defined functions.
- Built-in functions, which are hard-coded (defined by Kusto and cannot be modified by users).