Client APIs
API Reference Overview
Adds the scalar function as a new overload to the scalar function set.  
Returns DuckDBError if the function could not be added, for example if the overload already exists.  
###### Syntax {#docs:api:c:api::syntax}  
```c
duckdb_state duckdb_add_scalar_function_to_set(
duckdb_scalar_function_set set,
duckdb_scalar_function function
);
```  
###### Parameters {#docs:api:c:api::parameters}  
* `set`: The scalar function set
* `function`: The function to add  
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