diff --git a/doc/haha.sql b/doc/haha.sql
new file mode 100644
index 00000000..6bf14f37
--- /dev/null
+++ b/doc/haha.sql
@@ -0,0 +1,5 @@
+ALTER TABLE `cai_account_cash`
+    ADD COLUMN `coin_callback_coin` int(11) NOT NULL DEFAULT 0 COMMENT '提现紫贝返还值' AFTER `withdraw_coin`,
+    ADD COLUMN `coin_fees` int(11) NOT NULL DEFAULT 0 COMMENT '提现紫贝手续费' AFTER `coin_callback_coin`;
+update cai_account_cash
+set coin_callback_coin = withdraw_coin;