diff --git a/数据库/头歌/外连接查询/外连接查询.sh b/数据库/头歌/外连接查询/外连接查询.sh
new file mode 100644
index 0000000..634ced5
--- /dev/null
+++ b/数据库/头歌/外连接查询/外连接查询.sh
@@ -0,0 +1,24 @@
+USE Mall
+GO
+
+SET NOCOUNT ON
+
+--********** 左连接 **********--
+--********** Begin **********--
+SELECT p.prod_id, p.prod_name, p.prod_price, p.vend_id,
+       v.vend_id, v.vend_name, v.vend_phone
+FROM Products p LEFT JOIN Vendors v
+ON p.vend_id = v.vend_id;
+--********** End **********--
+
+--********** 右连接 **********--
+--********** Begin **********--
+SELECT p.prod_id, p.prod_name, p.prod_price, p.vend_id,
+       v.vend_id, v.vend_name, v.vend_phone
+FROM Products p RIGHT JOIN Vendors v
+ON p.vend_id = v.vend_id;
+--********** End **********--
+
+GO
+
+