[D1] Adding PRAGMA optimize for D1

src/content/docs/d1/best-practices/use-indexes.mdx

@@ -62,6 +62,10 @@ SELECT * FROM orders WHERE order_date = '2023-05-01'
 
 In more complex cases, you can confirm whether an index was used by D1 by [analyzing a query](#test-an-index) directly.
 
+### Run `PRAGMA optimize`
+
+After creating an index, run the [`PRAGMA optimize`](/d1/sql-api/sql-statements/#pragma-optimize) command to improve your database performance.
+
 ## List indexes
 
 List the indexes on a database, as well as the SQL definition, by querying the `sqlite_schema` system table:

src/content/partials/d1/use-pragma-statements.mdx

@@ -411,3 +411,11 @@ PRAGMA defer_foreign_keys = off
 ```
 
 Refer to the [foreign key documentation](/d1/sql-api/foreign-keys/) to learn more about how to work with foreign keys.
+
+### `PRAGMA optimize`
+
+Attempts to [optimize all schemas]() in a database by running various maintenance operations. We recommend running this command after [creating an index](/d1/best-practices/use-indexes/).
+
+Alternatively, to see all optimizations that would have been performed without actually executing them, run `PRAGMA optimize(-1)`.
+
+Refer to [SQLite PRAGMA optimize documentation](https://www.sqlite.org/pragma.html#pragma_optimize) for more information on how the command optimizes a database.