Function register_sha1_functions 

pub fn register_sha1_functions(conn: &Connection) -> Result<()>

Register the sha1 SQL function with the given SQLite connection. The function takes a single argument and returns the SHA1 hash (blob) of that argument. The argument can be either a string or a blob. If the argument is NULL, the result is NULL.

Example

let db = Connection::open_in_memory()?;
register_sha1_functions(&db)?;
let hash: Vec<u8> = db.query_row("SELECT sha1('hello')", [], |r| r.get(0))?;
let expected = b"\xaa\xf4\xc6\x1d\xdc\xc5\xe8\xa2\xda\xbe\xde\x0f\x3b\x48\x2c\xd9\xae\xa9\x43\x4d";
assert_eq!(hash, expected);