From 1d0ea6a633e16eabb4149585bbf52ec39548d6da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=BB=84=E6=9F=B1=E8=8F=98?= <2365839121@qq.com>
Date: Tue, 27 Sep 2022 23:33:06 +0000
Subject: [PATCH] =?UTF-8?q?35=20=E9=BB=84=E6=9F=B1=E8=8F=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 黄柱菘 <2365839121@qq.com>
---
 .../2022-9-16.sql"                            | 51 +++++++++++++++++++
 ...2022-9-26-\350\247\206\345\233\276.md.url" |  2 +
 2 files changed, 53 insertions(+)
 create mode 100644 "35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-16.sql"
 create mode 100644 "35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-26-\350\247\206\345\233\276.md.url"

diff --git "a/35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-16.sql" "b/35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-16.sql"
new file mode 100644
index 0000000..42e6290
--- /dev/null
+++ "b/35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-16.sql"
@@ -0,0 +1,51 @@
+--1����д��ͼʵ�ֲ�ѯ���������п��˻���Ϣ����ʾ���ţ�����֤����������
+create view  V_Get(����,����֤,����,���)
+as
+select b.CardNo,a.AccountCode,a.RealName,b.CardMoney from AccountInfo a
+join  BankCard b on b.AccountId=a.AccountId
+select * from V_Get
+
+
+select * from AccountInfo  --������Ϣ
+select * from BankCard  --���п���Ϣ
+select * from CardStateChange  --���п�״̬���ı�
+select * from CardTransfer  --ת�˱�
+select * from CardExchange  --���׼�¼
+
+ select * from  HTSC
+
+
+---2����ת�г�������: group by + sum(case when) /+count(case when)  ���ݷ���+ over (paritition by, order by)
+
+?   --  ��ʾ��  pivot
+select year,
+MAX(
+ CASE
+ WHEN month=1
+ THEN amouth
+ ELSE 0
+ END) AS "m1",
+ MAX(
+ CASE
+ WHEN month=2
+ THEN amouth
+ ELSE 0
+ END) AS "m2",
+ MAX(
+ CASE
+ WHEN month=3
+ THEN amouth
+ ELSE 0
+ END) AS "m3",
+ MAX(
+ CASE
+ WHEN month=4
+ THEN amouth
+ ELSE 0
+ END) AS "m4"
+
+
+
+
+from HTSC
+group by year
\ No newline at end of file
diff --git "a/35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-26-\350\247\206\345\233\276.md.url" "b/35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-26-\350\247\206\345\233\276.md.url"
new file mode 100644
index 0000000..31b19a6
--- /dev/null
+++ "b/35\351\273\204\346\237\261\350\217\230/\351\273\204\346\237\261\350\217\23035/2022-9-26-\350\247\206\345\233\276.md.url"
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://gitee.com/shu-ci-luo-ying/advanced-sql/blob/master/22%20%E6%9D%A8%E5%87%8C%E7%BF%94/%E7%AC%AC%E4%B8%83%E6%AC%A1%E4%BD%9C%E4%B8%9A/%E7%AC%94%E8%AE%B0/2022-9-26-%E8%A7%86%E5%9B%BE.md
-- 
Gitee