Carview!

  CREATE TABLE $wpdb->posts (
         KEY post_name (post_name($max_index_length)),
         KEY type_status_date (post_type,post_status,post_date,ID),
         KEY post_parent (post_parent),
+        KEY post_author (post_author)
+        KEY post_author (post_author),
+        KEY type_status_author (post_type,post_status,post_author)
 ) $charset_collate;\n";
         // Single site users table. The multisite flavor of the users table is handled below.

  function upgrade_all() {
                 upgrade_682();
+        }
+        if ( $wp_current_db_version < 60498 ) {
+                upgrade_690();
+        }
         maybe_disable_link_manager();
         maybe_disable_automattic_widgets();
-…
+ function upgrade_682() {
+        }
+}
+/**
+ * Executes changes made in WordPress 6.9.0.
+ *
+ * @ignore
+ * @since 6.9.0
+ *
+ * @global int  $wp_current_db_version The old (current) database version.
+ * @global wpdb $wpdb                  WordPress database abstraction object.
+ */
+function upgrade_690() {
+        global $wp_current_db_version, $wpdb;
+        if ( $wp_current_db_version < 60498 ) {
+                $wpdb->query( "ALTER TABLE $wpdb->posts ADD INDEX type_status_author (post_type,post_status,post_author)" );
+        }
+}
 /**
  * Executes network-level upgrade routines.
+ *

  $wp_version = '6.9-alpha-60093-src';
+ *
  * @global int $wp_db_version
  */
 $wp_db_version = 60497;
+$wp_db_version = 60498;
 /**
  * Holds the TinyMCE version.

Make WordPress Core