diff --git a/update.js b/update.js
index 55edfe0..c898d97 100644
--- a/update.js
+++ b/update.js
@@ -96,9 +96,9 @@ export async function update(table, rank, views) {
   }
 
   const JOIN = {
-    'comment': `SELECT comment_id AS id, COUNT(*) AS comment_count FROM web_comment WHERE ${WHERE[rank]} GROUP BY id`,
-    'praise': `SELECT praise_id AS id, COUNT(*) AS praise_count FROM web_praise     WHERE ${WHERE[rank]} GROUP BY id`,
-    'collect': `SELECT collect_id AS id, COUNT(*) AS collect_count FROM web_collect WHERE ${WHERE[rank]} GROUP BY id`
+    'comment': `SELECT comment_id AS id, IFNULL(COUNT(*), 0) AS comment_count FROM web_comment WHERE ${WHERE[rank]} GROUP BY id`,
+    'praise': `SELECT praise_id AS id, IFNULL(COUNT(*), 0) AS praise_count FROM web_praise     WHERE ${WHERE[rank]} GROUP BY id`,
+    'collect': `SELECT collect_id AS id, IFNULL(COUNT(*), 0) AS collect_count FROM web_collect WHERE ${WHERE[rank]} GROUP BY id`
   }
 
   for (let name of ['comment', 'praise', 'collect']) {