database: Remove crates.downloads column

Author: Turbo87

migrations/2024-03-04-144536_remove-downloads-column/down.sql

@@ -0,0 +1,15 @@
+alter table crates
+    add column downloads integer not null default 0;
+
+create index concurrently index_crate_downloads
+    on crates (downloads);
+
+create index concurrently index_crates_id_downloads_name
+    on crates (id, downloads, name);
+
+-- The following query can take a couple of seconds so it should be run manually
+-- outside of the migration to prevent the server from taking a long time to
+-- start up while waiting for the migration to complete.
+
+-- update crates
+-- set downloads = (select downloads from crate_downloads where crate_downloads.crate_id = crates.id);

migrations/2024-03-04-144536_remove-downloads-column/up.sql

@@ -0,0 +1,2 @@
+alter table crates
+    drop column downloads;

src/schema.rs

@@ -315,12 +315,6 @@ diesel::table! {
         ///
         /// (Automatically generated by Diesel.)
         created_at -> Timestamp,
-        /// The `downloads` column of the `crates` table.
-        ///
-        /// Its SQL type is `Int4`.
-        ///
-        /// (Automatically generated by Diesel.)
-        downloads -> Int4,
         /// The `description` column of the `crates` table.
         ///
         /// Its SQL type is `Nullable<Varchar>`.

src/worker/jobs/dump_db/dump-db.toml

@@ -78,7 +78,6 @@ id = "public"
 name = "public"
 updated_at = "public"
 created_at = "public"
-downloads = "public"
 description = "public"
 homepage = "public"
 documentation = "public"