From c3077d3b9143e17c64a12bf692e9bea7d7bb7e73 Mon Sep 17 00:00:00 2001
From: charm <404373224@qq.com>
Date: Thu, 9 Jul 2020 15:26:00 +0800
Subject: [PATCH] bug fix Issue #233 Closes #233

---
 indexprotocol/rewards/protocol.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/indexprotocol/rewards/protocol.go b/indexprotocol/rewards/protocol.go
index fe4265cc..da85b6b1 100644
--- a/indexprotocol/rewards/protocol.go
+++ b/indexprotocol/rewards/protocol.go
@@ -469,6 +469,12 @@ func (p *Protocol) rebuildAccountRewardTable(tx *sql.Tx, lastEpoch uint64) error
 		}
 	}
 
+	if len(valArgs) == 0 {
+		return nil
+	}
+	if len(valStrs) == 0 {
+		return errors.Wrap(err, "error : valStrs is empty")
+	}
 	insertQuery := fmt.Sprintf(insertAccountReward, AccountRewardTableName, strings.Join(valStrs, ","))
 	if _, err := tx.Exec(insertQuery, valArgs...); err != nil {
 		return err