diff --git a/store/db/postgres/attachment.go b/store/db/postgres/attachment.go
index 44362cc00..1c17941d6 100644
--- a/store/db/postgres/attachment.go
+++ b/store/db/postgres/attachment.go
@@ -59,13 +59,11 @@ func (d *DB) ListAttachments(ctx context.Context, find *store.FindAttachment) ([
 	}
 	if len(find.MemoIDList) > 0 {
 		holders := make([]string, 0, len(find.MemoIDList))
-		for range find.MemoIDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		where = append(where, "resource.memo_id IN ("+strings.Join(holders, ", ")+")")
 		for _, id := range find.MemoIDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, id)
 		}
+		where = append(where, "resource.memo_id IN ("+strings.Join(holders, ", ")+")")
 	}
 	if find.HasRelatedMemo {
 		where = append(where, "resource.memo_id IS NOT NULL")
diff --git a/store/db/postgres/memo.go b/store/db/postgres/memo.go
index ac4da8f25..3fa3abd4b 100644
--- a/store/db/postgres/memo.go
+++ b/store/db/postgres/memo.go
@@ -53,26 +53,22 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	}
 	if len(find.IDList) > 0 {
 		holders := make([]string, 0, len(find.IDList))
-		for range find.IDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		where = append(where, "memo.id IN ("+strings.Join(holders, ", ")+")")
 		for _, id := range find.IDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, id)
 		}
+		where = append(where, "memo.id IN ("+strings.Join(holders, ", ")+")")
 	}
 	if v := find.UID; v != nil {
 		where, args = append(where, "memo.uid = "+placeholder(len(args)+1)), append(args, *v)
 	}
 	if len(find.UIDList) > 0 {
 		holders := make([]string, 0, len(find.UIDList))
-		for range find.UIDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		where = append(where, "memo.uid IN ("+strings.Join(holders, ", ")+")")
 		for _, uid := range find.UIDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, uid)
 		}
+		where = append(where, "memo.uid IN ("+strings.Join(holders, ", ")+")")
 	}
 	if v := find.CreatorID; v != nil {
 		where, args = append(where, "memo.creator_id = "+placeholder(len(args)+1)), append(args, *v)
diff --git a/store/db/postgres/reaction.go b/store/db/postgres/reaction.go
index 3ff6354cb..e2b64737c 100644
--- a/store/db/postgres/reaction.go
+++ b/store/db/postgres/reaction.go
@@ -36,15 +36,11 @@ func (d *DB) ListReactions(ctx context.Context, find *store.FindReaction) ([]*st
 	}
 	if len(find.ContentIDList) > 0 {
 		holders := make([]string, 0, len(find.ContentIDList))
-		for range find.ContentIDList {
+		for _, id := range find.ContentIDList {
 			holders = append(holders, placeholder(len(args)+1))
+			args = append(args, id)
 		}
-		if len(holders) > 0 {
-			where = append(where, "content_id IN ("+strings.Join(holders, ", ")+")")
-			for _, id := range find.ContentIDList {
-				args = append(args, id)
-			}
-		}
+		where = append(where, "content_id IN ("+strings.Join(holders, ", ")+")")
 	}
 
 	rows, err := d.db.QueryContext(ctx, `