diff --git "a/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/config.json" "b/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/config.json"
index 4856e566837de5af3a667f68e0f826d80e1d9a00..45c6c64a8adae5235c6958257552e2cd81649576 100644
--- "a/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/config.json"	
+++ "b/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/config.json"	
@@ -1,8 +1,13 @@
 {
   "node_id": "mysql-459fd14ff096438d9b6460270bec4754",
-  "keywords": ["cursor"],
+  "keywords": [
+    "cursor",
+    "游标"
+  ],
   "children": [],
-  "export": [],
+  "export": [
+    "cursor.json"
+  ],
   "keywords_must": [],
   "keywords_forbid": [],
   "group": 0
diff --git "a/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/cursor.json" "b/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/cursor.json"
new file mode 100644
index 0000000000000000000000000000000000000000..b43507cce0a7adc519a2a0a184a980a29cbcf548
--- /dev/null
+++ "b/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/cursor.json"	
@@ -0,0 +1,7 @@
+{
+  "type": "code_options",
+  "author": "ccat",
+  "source": "cursor.md",
+  "notebook_enable": false,
+  "exercise_id": "106eadb83e2c4928b503d89dda2dd8f3"
+}
\ No newline at end of file
diff --git "a/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/cursor.md" "b/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/cursor.md"
new file mode 100644
index 0000000000000000000000000000000000000000..1b8b7b2461697ceb8a57676b56a2b4e5a5d44dad
--- /dev/null
+++ "b/data/3.MySQL\351\253\230\351\230\266/4. \350\277\207\347\250\213\345\214\226\347\274\226\347\250\213/5. \346\270\270\346\240\207/cursor.md"	
@@ -0,0 +1,159 @@
+# 游标
+
+Joe 需要开发一个存储过程 make_trade，从 orders 表
+
+```mysql
+create table orders (
+    id int primary key auto_increment,
+    price decimal(12, 4),
+    item_id int,
+    amount int
+)
+```
+
+中，按 id 从小到大加载订单数据，生成交易单，写入 trade 表 
+
+```mysql
+create table trade (
+    id int primary key auto_increment,
+    total decimal(12, 4)
+    -- ...
+)
+```
+
+其中 trade 的 total字段保存了交易单的总金额，这个金额是每一张交易单的所有 orders 的 price 总和，其数值不会超过 20000。
+
+因为撮合交易的逻辑是串行的，Joe决定用游标实现这部分逻辑。下列哪一个选项是对的(选项中仅包含撮合逻辑，不包括完整的存储过程)？
+
+为简单起见，我们忽略交易的详细逻辑，假设 orders 表仅包含 id, price, item_id, amount 四项。
+
+## 答案
+
+```mysql
+create procedure make_trade()
+begin
+    DECLARE done INT DEFAULT FALSE;
+    declare cur_orders cursor for select id, price, item_id, amount from orders order by id limit 1000;
+    declare order_id, item_id, amount INT;
+    declare price decimal(12, 4);
+    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
+    
+    open cur_orders;
+    trade: LOOP
+        fetch cur_orders into order_id, price, item_id, amount;
+        if done then
+            LEAVE trade;
+        end if;
+    if @total + @price > 2000 then
+        leave trade;
+    else
+        -- 省略交易逻辑        
+    end if;
+    END LOOP trade;
+    CLOSE cur_orders;
+    start transaction;
+    -- save trade
+    delete from orders where id < order_id;
+    commit ;
+
+end;
+```
+
+## 选项
+
+### A
+
+```mysql
+create procedure make_trade()
+begin
+    DECLARE done INT DEFAULT FALSE;
+    declare cur_orders cursor for select id, price, item_id, amount from orders order by id limit 1000;
+    declare order_id, item_id, amount INT;
+    declare price decimal(12, 4);
+    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
+    
+    open cur_orders;
+    trade: LOOP
+        fetch cur_orders into order_id, price, item_id, amount;
+        if done then
+            LEAVE trade;
+        end if;
+    -- 省略交易逻辑
+    if @total + @price > 2000 then
+        leave trade;
+    else
+        NEXT cur_orders;
+    end if;
+    END LOOP trade;
+end;
+```
+
+### B
+
+```mysql
+create procedure make_trade()
+begin
+    declare cur_orders cursor for select id, price, item_id, amount from orders order by id limit 1000;
+    declare order_id, item_id, amount INT;
+    declare price decimal(12, 4);
+    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
+    
+    trade: LOOP
+        fetch cur_orders into order_id, price, item_id, amount;
+    -- 省略交易逻辑
+    END LOOP trade;
+    start transaction;
+    -- save trade
+    delete from orders where id < order_id;
+    commit ;
+end;
+```
+
+### C
+
+```mysql
+create procedure make_trade()
+begin
+    DECLARE done INT DEFAULT FALSE;
+    declare cur_orders cursor for select id, price, item_id, amount from orders order by id limit 1000;
+    declare order_id, item_id, amount INT;
+    declare price decimal(12, 4);
+    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
+    
+    open cur_orders;
+    fetch cur_orders into order_id, price, item_id, amount;
+    if done then
+        LEAVE cur_orders;
+    end if;
+    -- 省略交易逻辑
+    
+end;
+```
+
+### D
+
+```mysql
+create procedure make_trade()
+begin
+    DECLARE done INT DEFAULT FALSE;
+    declare cur_orders cursor for select id, price, item_id, amount from orders order by id limit 1000;
+    declare order_id, item_id, amount INT;
+    declare price decimal(12, 4);
+    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
+    
+    open cur_orders;
+    trade: LOOP
+        fetch cur_orders into order_id, price, item_id, amount;
+        if done then
+            LEAVE trade;
+        end if;
+    -- 省略交易逻辑
+        
+    END LOOP trade;
+    CLOSE cur_orders;
+    start transaction;
+    -- save trade
+    delete from orders where id < order_id;
+    commit ;
+end;
+```
\ No newline at end of file
diff --git a/data/tree.json b/data/tree.json
index 93fbeea5b1b0b294a65f58dd10eb694bb5e2a4f0..ea21e5d8212401b29b88454809972df6be07be7f 100644
--- a/data/tree.json
+++ b/data/tree.json
@@ -2180,7 +2180,10 @@
                   {
                     "REPEAT": {
                       "node_id": "mysql-923c7bbf96cf4630a5dfb36f15e62d24",
-                      "keywords": [],
+                      "keywords": [
+                        "repeat",
+                        "循环"
+                      ],
                       "children": [],
                       "keywords_must": [],
                       "keywords_forbid": [],
@@ -2203,7 +2206,8 @@
                     " 游标": {
                       "node_id": "mysql-459fd14ff096438d9b6460270bec4754",
                       "keywords": [
-                        "cursor"
+                        "cursor",
+                        "游标"
                       ],
                       "children": [],
                       "keywords_must": [],