Remove TODO's about Null. We'll implement Option<T> in another PR

minisql/src/type_system.rs

@@ -13,9 +13,6 @@ pub enum DbType {
 // ==============Values================
 pub type Uuid = u64;
 
-// TODO: What about nulls? I would rather not have that in SQL, it sucks.
-//       I would rather have non-nullable values by default,
-//       and something like an explicit Option type for nulls.
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub enum Value {
     Number(f64), // TODO: Can't put floats as keys in maps, since they don't implement Eq. What to
@@ -28,7 +25,6 @@ pub enum IndexableValue {
     String(String),
     Int(u64),
     Uuid(Uuid),
-    // TODO: what about null?
 }
 
 impl DbType {