Left joins on following columns

The issue was that resets were not effective and were not deleting rows.
This is because following is set to NULL in the incoming data.
So, when the query was joining against accounts table, the resets rows
were skipped, because there was no matching account.
To fix this the JOIN on the following column needs to be LEFT JOIN.

hive/db/sql_scripts/follow_ops.sql

@@ -278,7 +278,7 @@ AS $BODY$
       FROM UNNEST(_follow_updates) AS upd
       CROSS JOIN LATERAL UNNEST(upd.changes) AS ch(follower, following, block_num)
       JOIN accounts_id AS r ON ch.follower = r.name
-      JOIN accounts_id AS g ON ch.following = g.name
+      LEFT JOIN accounts_id AS g ON ch.following = g.name
       GROUP BY upd.id, upd.mode
       ORDER BY upd.id
     ) AS upd_with_ids
@@ -305,7 +305,7 @@ AS $BODY$
       FROM UNNEST(_muted_updates) AS upd
       CROSS JOIN LATERAL UNNEST(upd.changes) AS ch(follower, following, block_num)
       JOIN accounts_id AS r ON ch.follower = r.name
-      JOIN accounts_id AS g ON ch.following = g.name
+      LEFT JOIN accounts_id AS g ON ch.following = g.name
       GROUP BY upd.id, upd.mode
       ORDER BY upd.id
     ) AS upd_with_ids
@@ -332,7 +332,7 @@ AS $BODY$
       FROM UNNEST(_blacklisted_updates) AS upd
       CROSS JOIN LATERAL UNNEST(upd.changes) AS ch(follower, following, block_num)
       JOIN accounts_id AS r ON ch.follower = r.name
-      JOIN accounts_id AS g ON ch.following = g.name
+      LEFT JOIN accounts_id AS g ON ch.following = g.name
       GROUP BY upd.id, upd.mode
       ORDER BY upd.id
     ) AS upd_with_ids
@@ -359,7 +359,7 @@ AS $BODY$
       FROM UNNEST(_follow_muted_updates) AS upd
       CROSS JOIN LATERAL UNNEST(upd.changes) AS ch(follower, following, block_num)
       JOIN accounts_id AS r ON ch.follower = r.name
-      JOIN accounts_id AS g ON ch.following = g.name
+      LEFT JOIN accounts_id AS g ON ch.following = g.name
       GROUP BY upd.id, upd.mode
       ORDER BY upd.id
     ) AS upd_with_ids
@@ -386,7 +386,7 @@ AS $BODY$
       FROM UNNEST(_follow_blacklisted_updates) AS upd
       CROSS JOIN LATERAL UNNEST(upd.changes) AS ch(follower, following, block_num)
       JOIN accounts_id AS r ON ch.follower = r.name
-      JOIN accounts_id AS g ON ch.following = g.name
+      LEFT JOIN accounts_id AS g ON ch.following = g.name
       GROUP BY upd.id, upd.mode
       ORDER BY upd.id
     ) AS upd_with_ids