try other idea

hive/db/sql_scripts/hive_post_operations.sql

@@ -121,7 +121,7 @@ if _parent_author != '' THEN
         _block_num as block_num, _block_num as block_num_created
   FROM hive_accounts ha,
         hive_permlink_data hpd,
-        process_community_post(_block_num, _community_support_start_block, NULL, _parent_permlink, author_id, false) pcp,
+        process_community_post(_block_num, _community_support_start_block, NULL, _parent_permlink, ha.id, false) pcp,
         hive_posts php
   INNER JOIN hive_accounts pha ON pha.id = php.author_id
   INNER JOIN hive_permlink_data phpd ON phpd.id = php.permlink_id