From 025c7ca1d571756ca2a8f260a16be42b0ba44a80 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=83=91=E5=AE=97=E5=B8=85?=
 <10033721+TXYforever@user.noreply.gitee.com>
Date: Sun, 18 Sep 2022 08:50:09 +0000
Subject: [PATCH] =?UTF-8?q?14=20=E9=83=91=E5=AE=97=E5=B8=85?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 郑宗帅 <>
---
 .../\344\275\234\344\270\232.sql"             | 55 +++++++++++++++++++
 .../\347\254\224\350\256\260.md"              |  1 +
 2 files changed, 56 insertions(+)
 create mode 100644 "14\351\203\221\345\256\227\345\270\205/\344\275\234\344\270\232.sql"
 create mode 100644 "14\351\203\221\345\256\227\345\270\205/\347\254\224\350\256\260.md"

diff --git "a/14\351\203\221\345\256\227\345\270\205/\344\275\234\344\270\232.sql" "b/14\351\203\221\345\256\227\345\270\205/\344\275\234\344\270\232.sql"
new file mode 100644
index 0000000..a844061
--- /dev/null
+++ "b/14\351\203\221\345\256\227\345\270\205/\344\275\234\344\270\232.sql"
@@ -0,0 +1,55 @@
+--1. ��ѯ���人�������е�Ա����Ϣ��Ҫ����ʾ���������Լ�Ա������ϸ����
+select * from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+where PeopleAddress='�人' 
+--2. ��ѯ���人�������е�Ա����Ϣ��Ҫ����ʾ�������ƣ�ְ�������Լ�Ա������ϸ����
+select * from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+inner join Rank on People.RankId=Rank.RankId
+where PeopleAddress='�人'
+--3. ���ݲ��ŷ���ͳ��Ա��������Ա�������ܺͣ�ƽ�����ʣ���߹��ʺ���͹��ʡ�
+select DepartmentName,count(People.DepartmentId) ����,sum(People.Peoplesalary) �ۺ�,AVG(People.PeopleSalary) ƽ��,max(People.PeopleSalary) ���,min(People.PeopleSalary) ��� from People
+inner join Department on People.DepartmentId=Department.DepartmentId
+group by DepartmentName
+
+--4. ���ݲ��ŷ���ͳ��Ա��������Ա�������ܺͣ�ƽ�����ʣ���߹��ʺ���͹��ʣ�ƽ��������10000 ���µIJ�����ͳ�ƣ����Ҹ���ƽ�����ʽ������С�
+select DepartmentName,count(People.DepartmentId) ����,sum(People.Peoplesalary) �ۺ�,AVG(People.PeopleSalary) ƽ��,max(People.PeopleSalary) ���,min(People.PeopleSalary) ��� from People
+inner join Department on People.DepartmentId=Department.DepartmentId
+group by DepartmentName
+Having AVG(People.PeopleSalary)>10000
+order by  AVG(People.PeopleSalary) desc;
+--5. ���ݲ������ƣ�Ȼ�����ְλ���ƣ�����ͳ��Ա��������Ա�������ܺͣ�ƽ�����ʣ���߹��ʺ���͹���
+select  R.RankId,DepartmentName,count(People.DepartmentId) ����,sum(People.Peoplesalary) �ۺ�,AVG(People.PeopleSalary) ƽ��,max(People.PeopleSalary) ���,min(People.PeopleSalary) ��� from People
+inner join Department on People.DepartmentId=Department.DepartmentId
+inner join Rank R on People.RankId=R.RankId
+group by DepartmentName,R.RankId
+
+--6.��ѯ����з 6.22--7.22 ��Ա����Ϣ
+select * from People where MONTH(PeopleBirth)+CONVERT(float,DAY(PeopleBirth))/100 between 6.22 and 7.22
+--7.��ѯ����Ա����Ϣ������һ����ʾ����(��,ţ,��,��,��,��,��,��,��,��,��,��)
+select *,case
+	when year (PeopleBirth)%12=0
+	then '��'
+		when year (PeopleBirth)%12=1
+	then 'ţ'
+		when year (PeopleBirth)%12=2
+	then '��'
+		when year (PeopleBirth)%12=3
+	then '��'
+		when year (PeopleBirth)%12=4
+	then '��'
+		when year (PeopleBirth)%12=5
+	then '��'
+		when year (PeopleBirth)%12=6
+	then '��'
+		when year (PeopleBirth)%12=7
+	then '��'
+		when year (PeopleBirth)%12=8
+	then '��'
+		when year (PeopleBirth)%12=9
+	then '��'
+		when year (PeopleBirth)%12=10
+	then '��'
+		when year (PeopleBirth)%12=11
+	then '��'
+	end from People
\ No newline at end of file
diff --git "a/14\351\203\221\345\256\227\345\270\205/\347\254\224\350\256\260.md" "b/14\351\203\221\345\256\227\345\270\205/\347\254\224\350\256\260.md"
new file mode 100644
index 0000000..8618c45
--- /dev/null
+++ "b/14\351\203\221\345\256\227\345\270\205/\347\254\224\350\256\260.md"
@@ -0,0 +1 @@
+学会了灵活运用子查询和关联查询
\ No newline at end of file
-- 
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