Client APIs
API Reference Overview
Ensures the validity mask is writable by allocating it.  
After this function is called, `duckdb_vector_get_validity` will ALWAYS return non-NULL.
This allows null values to be written to the vector, regardless of whether a validity mask was present before.  
###### Syntax {#docs:api:c:api::syntax}  
```c
void duckdb_vector_ensure_validity_writable(
duckdb_vector vector
);
```  
###### Parameters {#docs:api:c:api::parameters}  
* `vector`: The vector to alter  
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