﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>BlogJava-人要有梦想-随笔分类-dabase</title><link>http://www.blogjava.net/martin/category/11425.html</link><description>为梦想努力</description><language>zh-cn</language><lastBuildDate>Tue, 27 Feb 2007 11:58:05 GMT</lastBuildDate><pubDate>Tue, 27 Feb 2007 11:58:05 GMT</pubDate><ttl>60</ttl><item><title>SQL 例子 转载</title><link>http://www.blogjava.net/martin/archive/2006/05/23/47648.html</link><dc:creator>人要有梦想</dc:creator><author>人要有梦想</author><pubDate>Tue, 23 May 2006 07:10:00 GMT</pubDate><guid>http://www.blogjava.net/martin/archive/2006/05/23/47648.html</guid><wfw:comment>http://www.blogjava.net/martin/comments/47648.html</wfw:comment><comments>http://www.blogjava.net/martin/archive/2006/05/23/47648.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/martin/comments/commentRss/47648.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/martin/services/trackbacks/47648.html</trackback:ping><description><![CDATA[
		<p>-1、查找员工的编号、姓名、部门和出生日期，如果出生日期为空值，<br />--显示日期不详,并按部门排序输出,日期格式为yyyy-mm-dd。<br />select emp_no ,emp_name ,dept ,<br />isnull(convert(char(10),birthday,120),'日期不详') birthday<br />from employee<br />order by dept <br />--2、查找与喻自强在同一个单位的员工姓名、性别、部门和职称<br />select emp_no,emp_name,dept,title<br />from employee<br />where emp_name&lt;&gt;'喻自强' and dept in<br />(select dept from employee<br />where emp_name='喻自强')</p>
		<p>--3、按部门进行汇总，统计每个部门的总工资<br />select dept,sum(salary)<br />from employee<br />group by dept</p>
		<p>--4、查找商品名称为14寸显示器商品的销售情况，<br />--显示该商品的编号、销售数量、单价和金额<br />select a.prod_id,qty,unit_price,unit_price*qty totprice<br />from sale_item a,product b<br />where a.prod_id=b.prod_id and prod_name='14寸显示器'</p>
		<p>--5、在销售明细表中按产品编号进行汇总，统计每种产品的销售数量和金额<br />select prod_id,sum(qty) totqty,sum(qty*unit_price) totprice<br />from sale_item<br />group by prod_id</p>
		<p>--6、使用convert函数按客户编号统计每个客户1996年的订单总金额<br />select cust_id,sum(tot_amt) totprice<br />from sales<br />where convert(char(4),order_date,120)='1996'<br />group by cust_id</p>
		<p>--7、查找有销售记录的客户编号、名称和订单总额<br />select a.cust_id,cust_name,sum(tot_amt) totprice<br />from customer a,sales b<br />where a.cust_id=b.cust_id<br />group by a.cust_id,cust_name</p>
		<p>--8、查找在1997年中有销售记录的客户编号、名称和订单总额<br />select a.cust_id,cust_name,sum(tot_amt) totprice<br />from customer a,sales b<br />where a.cust_id=b.cust_id and convert(char(4),order_date,120)='1997'<br />group by a.cust_id,cust_name</p>
		<p>--9、查找一次销售最大的销售记录<br />select order_no,cust_id,sale_id,tot_amt<br />from sales<br />where tot_amt=<br />(select max(tot_amt)<br />from sales)</p>
		<p>--10、查找至少有3次销售的业务员名单和销售日期<br />select emp_name,order_date<br />from employee a,sales b <br />where emp_no=sale_id and a.emp_no in<br />(select sale_id<br />from sales<br />group by sale_id<br />having count(*)&gt;=3)<br />order by emp_name</p>
		<p>--11、用存在量词查找没有订货记录的客户名称<br />select cust_name<br />from customer a<br />where not exists<br />(select *<br />from sales b<br />where a.cust_id=b.cust_id)</p>
		<p>--12、使用左外连接查找每个客户的客户编号、名称、订货日期、订单金额<br />--订货日期不要显示时间，日期格式为yyyy-mm-dd<br />--按客户编号排序，同一客户再按订单降序排序输出<br />select a.cust_id,cust_name,convert(char(10),order_date,120),tot_amt<br />from customer a left outer join sales b on a.cust_id=b.cust_id<br />order by a.cust_id,tot_amt desc</p>
		<p>--13、查找16M DRAM的销售情况，要求显示相应的销售员的姓名、<br />--性别，销售日期、销售数量和金额，其中性别用男、女表示<br />select emp_name 姓名, 性别= case a.sex when 'm' then '男'<br />when 'f' then '女' <br />else '未'<br />end,<br />销售日期= isnull(convert(char(10),c.order_date,120),'日期不详'),<br />qty 数量, qty*unit_price as 金额<br />from employee a, sales b, sale_item c,product d<br />where d.prod_name='16M DRAM' and d.prod_id=c.prod_id and<br />a.emp_no=b.sale_id and b.order_no=c.order_no</p>
		<p>--14、查找每个人的销售记录，要求显示销售员的编号、姓名、性别、<br />--产品名称、数量、单价、金额和销售日期<br />select emp_no 编号,emp_name 姓名, 性别= case a.sex when 'm' then '男'<br />when 'f' then '女' <br />else '未'<br />end,<br />prod_name 产品名称,销售日期= isnull(convert(char(10),c.order_date,120),'日期不详'),<br />qty 数量, qty*unit_price as 金额<br />from employee a left outer join sales b on a.emp_no=b.sale_id , sale_item c,product d<br />where d.prod_id=c.prod_id and b.order_no=c.order_no</p>
		<p>--15、查找销售金额最大的客户名称和总货款<br />select cust_name,d.cust_sum<br />from customer a,<br />(select cust_id,cust_sum<br />from (select cust_id, sum(tot_amt) as cust_sum<br />from sales<br />group by cust_id ) b<br />where b.cust_sum = <br />( select max(cust_sum)<br />from (select cust_id, sum(tot_amt) as cust_sum<br />from sales<br />group by cust_id ) c )<br />) d<br />where a.cust_id=d.cust_id </p>
		<p>--16、查找销售总额少于1000元的销售员编号、姓名和销售额<br />select emp_no,emp_name,d.sale_sum<br />from employee a,<br />(select sale_id,sale_sum<br />from (select sale_id, sum(tot_amt) as sale_sum<br />from sales<br />group by sale_id ) b<br />where b.sale_sum &lt;1000 <br />) d<br />where a.emp_no=d.sale_id </p>
		<p>--17、查找至少销售了3种商品的客户编号、客户名称、商品编号、商品名称、数量和金额<br />select a.cust_id,cust_name,b.prod_id,prod_name,d.qty,d.qty*d.unit_price<br />from customer a, product b, sales c, sale_item d<br />where a.cust_id=c.cust_id and d.prod_id=b.prod_id and <br />c.order_no=d.order_no and a.cust_id in (<br />select cust_id<br />from (select cust_id,count(distinct prod_id) prodid<br />from (select cust_id,prod_id<br />from sales e,sale_item f<br />where e.order_no=f.order_no) g<br />group by cust_id<br />having count(distinct prod_id)&gt;=3) h )</p>
		<p>--18、查找至少与世界技术开发公司销售相同的客户编号、名称和商品编号、商品名称、数量和金额<br />select a.cust_id,cust_name,d.prod_id,prod_name,qty,qty*unit_price<br />from customer a, product b, sales c, sale_item d<br />where a.cust_id=c.cust_id and d.prod_id=b.prod_id and <br />c.order_no=d.order_no and not exists<br />(select f.*<br />from customer x ,sales e, sale_item f<br />where cust_name='世界技术开发公司' and x.cust_id=e.cust_id and<br />e.order_no=f.order_no and not exists<br />( select g.*<br />from sale_item g, sales h<br />where g.prod_id = f.prod_id and g.order_no=h.order_no and<br />h.cust_id=a.cust_id)<br />)</p>
		<p>19、查找表中所有姓刘的职工的工号，部门，薪水<br />select emp_no,emp_name,dept,salary<br />from employee<br />where emp_name like '刘%'</p>
		<p>20、查找所有定单金额高于2000的所有客户编号<br />select cust_id<br />from sales<br />where tot_amt&gt;2000</p>
		<p>21、统计表中员工的薪水在4000-6000之间的人数<br />select count(*)as 人数<br />from employee<br />where salary between 4000 and 6000</p>
		<p>22、查询表中的同一部门的职工的平均工资，但只查询＂住址＂是＂上海市＂的员工<br />select avg(salary) avg_sal,dept <br />from employee <br />where addr like '上海市%'<br />group by dept</p>
		<p>23、将表中住址为"上海市"的员工住址改为"北京市"<br />update employee <br />set addr like '北京市'<br />where addr like '上海市'</p>
		<p>24、查找业务部或会计部的女员工的基本信息。<br />select emp_no,emp_name,dept<br />from employee <br />where sex='F'and dept in ('业务','会计')</p>
		<p>25、显示每种产品的销售金额总和，并依销售金额由大到小输出。<br />select prod_id ,sum(qty*unit_price)<br />from sale_item <br />group by prod_id<br />order by sum(qty*unit_price) desc</p>
		<p>26、选取编号界于'C0001'和'C0004'的客户编号、客户名称、客户地址。<br />select CUST_ID,cust_name,addr<br />from customer <br />where cust_id between 'C0001' AND 'C0004'</p>
		<p>27、计算出一共销售了几种产品。<br />select count(distinct prod_id) as '共销售产品数'<br />from sale_item </p>
		<p>28、将业务部员工的薪水上调3%。<br />update employee<br />set salary=salary*1.03<br />where dept='业务'</p>
		<p>29、由employee表中查找出薪水最低的员工信息。<br />select *<br />from employee<br />where salary=<br />(select min(salary )<br />from employee )</p>
		<p>30、使用join查询客户姓名为"客户丙"所购货物的"客户名称","定单金额","定货日期","电话号码"<br />select a.cust_id,b.tot_amt,b.order_date,a.tel_no<br />from customer a join sales b<br />on a.cust_id=b.cust_id and cust_name like '客户丙'</p>
		<p>31、由sales表中查找出订单金额大于"E0013业务员在1996/10/15这天所接每一张订单的金额"的所有订单。<br />select *<br />from sales<br />where tot_amt&gt;all<br />(select tot_amt <br />from sales <br />where sale_id='E0013'and order_date='1996/10/15')<br />order by tot_amt</p>
		<p>32、计算'P0001'产品的平均销售单价<br />select avg(unit_price)<br />from sale_item<br />where prod_id='P0001'</p>
		<p>33、找出公司女员工所接的定单<br />select sale_id,tot_amt<br />from sales<br />where sale_id in <br />(select sale_id from employee<br />where sex='F')</p>
		<p>34、找出同一天进入公司服务的员工<br />select a.emp_no,a.emp_name,a.date_hired<br />from employee a<br />join employee b<br />on (a.emp_no!=b.emp_no and a.date_hired=b.date_hired)<br />order by a.date_hired</p>
		<p>35、找出目前业绩超过232000元的员工编号和姓名。<br />select emp_no,emp_name<br />from employee <br />where emp_no in<br />(select sale_id<br />from sales <br />group by sale_id<br />having sum(tot_amt)&lt;232000)</p>
		<p>36、查询出employee表中所有女职工的平均工资和住址在＂上海市＂的所有女职工的平均工资<br />select avg(salary)<br />from employee<br />where sex like 'f'<br />union<br />select avg(salary)<br />from employee<br />where sex like 'f' and addr like '上海市%'</p>
		<p>37、在employee表中查询薪水超过员工平均薪水的员工信息。<br />Select * <br />from employee <br />where salary&gt;( select avg(salary) <br />from employee)</p>
		<p>38、 找出目前销售业绩超过10000元的业务员编号及销售业绩，并按销售业绩从大到小排序。<br />Select sale_id ,sum(tot_amt)<br />from sales <br />group by sale_id <br />having sum(tot_amt)&gt;10000<br />order by sum(tot_amt) desc</p>
		<p>39、 找出公司男业务员所接且订单金额超过2000元的订单号及订单金额。 <br />Select order_no,tot_amt<br />From sales ,employee<br />Where sale_id=emp_no and sex='M' and tot_amt&gt;2000</p>
		<p>40、 查询sales表中订单金额最高的订单号及订单金额。<br />Select order_no,tot_amt from sales <br />where tot_amt=(select max(tot_amt) from sales)</p>
		<p>41、 查询在每张订单中订购金额超过4000元的客户名及其地址。<br />Select cust_name,addr from customer a,sales b <br />where a.cust_id=b.cust_id and tot_amt&gt;4000</p>
		<p>42、 求出每位客户的总订购金额，显示出客户号及总订购金额，并按总订购金额降序排列。<br />Select cust_id,sum(tot_amt) from sales<br />Group by cust_id <br />Order by sum(tot_amt) desc</p>
		<p>43、 求每位客户订购的每种产品的总数量及平均单价，并按客户号，产品号从小到大排列。<br />Select cust_id,prod_id,sum(qty),sum(qty*unit_price)/sum(qty)<br />From sales a, sale_item b<br />Where a.order_no=b.order_no<br />Group by cust_id,prod_id<br />Order by cust_id,prod_id</p>
		<p>44、 查询订购了三种以上产品的订单号。<br />Select order_no <br />from sale_item<br />Group by order_no<br />Having count(*)&gt;3</p>
		<p>45、 查询订购的产品至少包含了订单3号中所订购产品的订单。<br />Select distinct order_no<br />From sale_item a<br />Where order_no&lt;&gt;'3'and not exists ( <br />Select * from sale_item b where order_no ='3' and not exists <br />(select * from sale_item c where c.order_no=a.order_no and c.prod_id=b.prod_id))</p>
		<p>46、 在sales表中查找出订单金额大于"E0013业务员在1996/11/10这天所接每一张订单的金额"的所有订单，并显示承接这些订单的业务员和该订单的金额。<br />Select sale_id,tot_amt from sales<br />where tot_amt&gt;all(select tot_amt <br />from sales <br />where sale_id='E0013' and order_date='1996-11-10') </p>
		<p>47、 查询末承接业务的员工的信息。<br />Select *<br />From employee a<br />Where not exists <br />(select * from sales b where a.emp_no=b.sale_id)</p>
		<p>48、 查询来自上海市的客户的姓名，电话、订单号及订单金额。<br />Select cust_name,tel_no,order_no,tot_amt<br />From customer a ,sales b<br />Where a.cust_id=b.cust_id and addr='上海市'</p>
		<p>49、 查询每位业务员各个月的业绩，并按业务员编号、月份降序排序。<br />Select sale_id,month(order_date), sum(tot_amt) <br />from sales <br />group by sale_id,month(order_date)<br />order by sale_id,month(order_date) desc</p>
		<p>50、 求每种产品的总销售数量及总销售金额，要求显示出产品编号、产品名称，总数量及总金额，并按产品号从小到大排列。 <br />Select a.prod_id,prod_name,sum(qty),sum(qty*unit_price)<br />From sale_item a,product b<br />Where a.prod_id=b.prod_id <br />Group by a.prod_id,prod_name<br />Order by a.prod_id<br />51、 查询总订购金额超过'C0002'客户的总订购金额的客户号，客户名及其住址。<br />Select cust_id, cust_name,addr<br />From customer<br />Where cust_id in (select cust_id from sales <br />Group by cust_id<br />Having sum(tot_amt)&gt;<br />(Select sum(tot_amt) from sales where cust_id='C0002'))</p>
		<p>52、 查询业绩最好的的业务员号、业务员名及其总销售金额。<br />select emp_no,emp_name,sum(tot_amt)<br />from employee a,sales b<br />where a.emp_no=b.sale_id<br />group by emp_no,emp_name<br />having sum(tot_amt)=<br />(select max(totamt)<br />from (select sale_id,sum(tot_amt) totamt<br />from sales<br />group by sale_id) c)</p>
		<p>53、 查询每位客户所订购的每种产品的详细清单，要求显示出客户号，客户名，产品号，产品名，数量及单价。<br />select a.cust_id, cust_name,c.prod_id,prod_name,qty, unit_price<br />from customer a,sales b, sale_item c ,product d<br />where a.cust_id=b.cust_id and b.order_no=c.order_no and c.prod_id=d.prod_id</p>
		<p>54、 求各部门的平均薪水，要求按平均薪水从小到大排序。<br />select dept,avg(salary) <br />from employee<br />group by dept <br />order by avg(salary)<br /></p>
<img src ="http://www.blogjava.net/martin/aggbug/47648.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/martin/" target="_blank">人要有梦想</a> 2006-05-23 15:10 <a href="http://www.blogjava.net/martin/archive/2006/05/23/47648.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>