From 45b922e93d8cf867a46f15d1db30c7e380e965b1 Mon Sep 17 00:00:00 2001
From: Helius <wangdoubleone@gmail.com>
Date: Tue, 24 Nov 2020 10:25:48 +0800
Subject: [PATCH] modify

---
 src/main/resources/mapper/member/MemberWalletCoinDao.xml |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/main/resources/mapper/member/MemberWalletCoinDao.xml b/src/main/resources/mapper/member/MemberWalletCoinDao.xml
index e7fd894..ff0d8b4 100644
--- a/src/main/resources/mapper/member/MemberWalletCoinDao.xml
+++ b/src/main/resources/mapper/member/MemberWalletCoinDao.xml
@@ -43,13 +43,19 @@
 		update member_wallet_coin
 		<set>
 			<if test="availableBalance != null">
-				available_balance = IFNULL(available_balance, 0) + #{availableBalance},
+				available_balance = (
+				case when  IFNULL(available_balance, 0) + #{availableBalance}>0 then  IFNULL(available_balance, 0) + #{availableBalance} else 0 end
+				),
 			</if>
 			<if test="totalBalance != null">
-				total_balance = IFNULL(total_balance, 0) + #{totalBalance},
+				total_balance = (
+				case when  IFNULL(total_balance, 0) + #{totalBalance}>0 then  IFNULL(total_balance, 0) + #{totalBalance} else 0 end
+				),
 			</if>
 			<if test="frozenBalance != null">
-				frozen_balance = IFNULL(frozen_balance, 0) + #{frozenBalance},
+				frozen_balance = (
+				case when  IFNULL(frozen_balance, 0) + #{frozenBalance}>0 then  IFNULL(frozen_balance, 0) + #{frozenBalance} else 0 end
+				),
 			</if>
 		</set>
 		where id=#{id}

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