add index for sorting by read_at

packages/db/migrations/0155.do.library_item_user_id_published_at_idx.sql

@@ -3,4 +3,4 @@
 -- Description: Add library_item_user_id_published_at_idx index on library_item table for user_id and published_at
 
 -- create index for sorting concurrently to avoid locking
-CREATE INDEX CONCURRENTLY IF NOT EXISTS library_item_user_id_updated_at_idx ON omnivore.library_item (user_id, updated_at DESC NULLS LAST);
+CREATE INDEX CONCURRENTLY IF NOT EXISTS library_item_user_id_published_at_idx ON omnivore.library_item (user_id, published_at DESC NULLS LAST);

packages/db/migrations/0156.do.library_item_user_id_read_at_idx.sql

@@ -0,0 +1,6 @@
+-- Type: DO
+-- Name: library_item_user_id_read_at_idx
+-- Description: Add library_item_user_id_read_at_idx index on library_item table for user_id and read_at
+
+-- create index for sorting concurrently to avoid locking
+CREATE INDEX CONCURRENTLY IF NOT EXISTS library_item_user_id_read_at_idx ON omnivore.library_item (user_id, read_at DESC NULLS LAST);

packages/db/migrations/0156.undo.library_item_user_id_read_at_idx.sql

@@ -0,0 +1,9 @@
+-- Type: UNDO
+-- Name: library_item_user_id_read_at_idx
+-- Description: Add library_item_user_id_read_at_idx index on library_item table for user_id and read_at
+
+BEGIN;
+
+DROP INDEX IF EXISTS library_item_user_id_read_at_idx;
+
+COMMIT;