From 1983d42713c219eb967ff055e9017e3ea9a59d18 Mon Sep 17 00:00:00 2001
From: GuanM <30427262+sxhoio@users.noreply.github.com.>
Date: Tue, 19 Nov 2024 15:17:11 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A4=96=E8=BF=9E=E6=8E=A5=E6=9F=A5=E8=AF=A2?=
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---
 数据库/头歌/外连接查询/外连接查询.sh | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 数据库/头歌/外连接查询/外连接查询.sh

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
+
+