54条sql学习

--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，显示日期不详,并按部门排序输出,日期格式为yyyy-mm-dd。  2 select emp_no,emp_name,dept,isnull(convert(char(10),birthday,120),'日期不详') birthday  3 from employee  4 order by dept  5   6 --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  7 select emp_no,emp_name,dept,title  8 from employee  9 where emp_name<>'喻自强' and dept in 10 (select dept from employee 11 where emp_name='喻自强') 12  13 --3、按部门进行汇总，统计每个部门的总工资 14 select dept,sum(salary) 15 from employee 16 group by dept 17  18 --4、查找商品名称为14寸显示器商品的销售情况，显示该商品的编号、销售数量、单价和金额 19 select a.prod_id,qty,unit_price,unit_price*qty totprice 20 from sale_item a,product b 21 where a.prod_id=b.prod_id and prod_name='14寸显示器' 22  23 --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 24 select prod_id,sum(qty) totqty,sum(qty*unit_price) totprice 25 from sale_item 26 group by prod_id 27  28 --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 29 select cust_id,sum(tot_amt) totprice 30 from sales 31 where convert(char(4),order_date,120)='1996' 32 group by cust_id 33  34 --7、查找有销售记录的客户编号、名称和订单总额 35 select a.cust_id,cust_name,sum(tot_amt) totprice 36 from customer a,sales b 37 where a.cust_id=b.cust_id 38 group by a.cust_id,cust_name 39  40 --8、查找在1997年中有销售记录的客户编号、名称和订单总额 41 select a.cust_id,cust_name,sum(tot_amt) totprice 42 from customer a,sales b 43 where a.cust_id=b.cust_id and convert(char(4),order_date,120)='1997' 44 group by a.cust_id,cust_name 45  46 --9、查找一次销售最大的销售记录 47 select order_no,cust_id,sale_id,tot_amt 48 from sales 49 where tot_amt= 50 (select max(tot_amt) 51 from sales) 52  53 --10、查找至少有3次销售的业务员名单和销售日期 54 select emp_name,order_date 55 from employee a,sales b  56 where emp_no=sale_id and a.emp_no in 57 (select sale_id 58 from sales 59 group by sale_id 60 having count(*)>=3) 61 order by emp_name 62  63 --11、用存在量词查找没有订货记录的客户名称 64 select cust_name 65 from customer a 66 where not exists 67 (select * 68 from sales b 69 where a.cust_id=b.cust_id) 70  71 --12、使用左外连接查找每个客户的客户编号、名称、订货日期、订单金额订货日期不要显示时间，日期格式为yyyy-mm-dd按客户编号排序，同一客户再按订单降序排序输出 72 select a.cust_id,cust_name,convert(char(10),order_date,120),tot_amt 73 from customer a left outer join sales b on a.cust_id=b.cust_id 74 order by a.cust_id,tot_amt desc 75  76 --13、查找16M DRAM的销售情况，要求显示相应的销售员的姓名、性别，销售日期、销售数量和金额，其中性别用男、女表示 77 select emp_name 姓名, 性别= case a.sex when 'm' then '男' 78 when 'f' then '女'  79 else '未' 80 end, 81 销售日期= isnull(convert(char(10),c.order_date,120),'日期不详'), 82 qty 数量, qty*unit_price as 金额 83 from employee a, sales b, sale_item c,product d 84 where d.prod_name='16M DRAM' and d.prod_id=c.prod_id and 85 a.emp_no=b.sale_id and b.order_no=c.order_no 86  87 --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、产品名称、数量、单价、金额和销售日期 88 select emp_no 编号,emp_name 姓名, 性别= case a.sex when 'm' then '男' 89 when 'f' then '女'  90 else '未' 91 end, 92 prod_name 产品名称,销售日期= isnull(convert(char(10),c.order_date,120),'日期不详'), 93 qty 数量, qty*unit_price as 金额 94 from employee a left outer join sales b on a.emp_no=b.sale_id , sale_item c,product d 95 where d.prod_id=c.prod_id and b.order_no=c.order_no 96  97 --15、查找销售金额最大的客户名称和总货款 98 select cust_name,d.cust_sum 99 from customer a,100 (select cust_id,cust_sum101 from (select cust_id, sum(tot_amt) as cust_sum102 from sales103 group by cust_id ) b104 where b.cust_sum = 105 ( select max(cust_sum)106 from (select cust_id, sum(tot_amt) as cust_sum107 from sales108 group by cust_id ) c )109 ) d110 where a.cust_id=d.cust_id 111 112 --16、查找销售总额少于1000元的销售员编号、姓名和销售额113 select emp_no,emp_name,d.sale_sum114 from employee a,115 (select sale_id,sale_sum116 from (select sale_id, sum(tot_amt) as sale_sum117 from sales118 group by sale_id ) b119 where b.sale_sum <1000 120 ) d121 where a.emp_no=d.sale_id 122 123 --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124 select a.cust_id,cust_name,b.prod_id,prod_name,d.qty,d.qty*d.unit_price125 from customer a, product b, sales c, sale_item d126 where a.cust_id=c.cust_id and d.prod_id=b.prod_id and 127 c.order_no=d.order_no and a.cust_id in (128 select cust_id129 from (select cust_id,count(distinct prod_id) prodid130 from (select cust_id,prod_id131 from sales e,sale_item f132 where e.order_no=f.order_no) g133 group by cust_id134 having count(distinct prod_id)>=3) h )135 136 --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137 select a.cust_id,cust_name,d.prod_id,prod_name,qty,qty*unit_price138 from customer a, product b, sales c, sale_item d139 where a.cust_id=c.cust_id and d.prod_id=b.prod_id and 140 c.order_no=d.order_no and not exists141 (select f.*142 from customer x ,sales e, sale_item f143 where cust_name='世界技术开发公司' and x.cust_id=e.cust_id and144 e.order_no=f.order_no and not exists145 ( select g.*146 from sale_item g, sales h147 where g.prod_id = f.prod_id and g.order_no=h.order_no and148 h.cust_id=a.cust_id)149 )150 151 19、查找表中所有姓刘的职工的工号，部门，薪水152 select emp_no,emp_name,dept,salary153 from employee154 where emp_name like '刘%'155 156 20、查找所有定单金额高于2000的所有客户编号157 select cust_id158 from sales159 where tot_amt>2000160 161 21、统计表中员工的薪水在4000-6000之间的人数162 select count(*)as 人数163 from employee164 where salary between 4000 and 6000165 166 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167 select avg(salary) avg_sal,dept 168 from employee 169 where addr like '上海市%'170 group by dept171 172 23、将表中住址为"上海市"的员工住址改为"北京市"173 update employee 174 set addr like '北京市'175 where addr like '上海市'176 177 24、查找业务部或会计部的女员工的基本信息。178 select emp_no,emp_name,dept179 from employee 180 where sex='F'and dept in ('业务','会计')181 182 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。183 select prod_id ,sum(qty*unit_price)184 from sale_item 185 group by prod_id186 order by sum(qty*unit_price) desc187 188 26、选取编号界于'C0001'和'C0004'的客户编号、客户名称、客户地址。189 select CUST_ID,cust_name,addr190 from customer 191 where cust_id between 'C0001' AND 'C0004'192 193 27、计算出一共销售了几种产品。194 select count(distinct prod_id) as '共销售产品数'195 from sale_item 196 197 28、将业务部员工的薪水上调3%。198 update employee199 set salary=salary*1.03200 where dept='业务'201 202 29、由employee表中查找出薪水最低的员工信息。203 select *204 from employee205 where salary=206 (select min(salary )207 from employee )208 209 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"210 select a.cust_id,b.tot_amt,b.order_date,a.tel_no211 from customer a join sales b212 on a.cust_id=b.cust_id and cust_name like '客户丙'213 214 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。215 select *216 from sales217 where tot_amt>all218 (select tot_amt 219 from sales 220 where sale_id='E0013'and order_date='1996/10/15')221 order by tot_amt222 223 32、计算'P0001'产品的平均销售单价224 select avg(unit_price)225 from sale_item226 where prod_id='P0001'227 228 33、找出公司女员工所接的定单229 select sale_id,tot_amt230 from sales231 where sale_id in 232 (select sale_id from employee233 where sex='F')234 235 34、找出同一天进入公司服务的员工236 select a.emp_no,a.emp_name,a.date_hired237 from employee a238 join employee b239 on (a.emp_no!=b.emp_no and a.date_hired=b.date_hired)240 order by a.date_hired241 242 35、找出目前业绩超过232000元的员工编号和姓名。243 select emp_no,emp_name244 from employee 245 where emp_no in246 (select sale_id247 from sales 248 group by sale_id249 having sum(tot_amt)<232000)250 251 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252 select avg(salary)253 from employee254 where sex like 'f'255 union256 select avg(salary)257 from employee258 where sex like 'f' and addr like '上海市%'259 260 37、在employee表中查询薪水超过员工平均薪水的员工信息。261 Select * 262 from employee 263 where salary>( select avg(salary) 264 from employee)265 266 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。267 Select sale_id ,sum(tot_amt)268 from sales 269 group by sale_id 270 having sum(tot_amt)>10000271 order by sum(tot_amt) desc272 273 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。 274 Select order_no,tot_amt275 From sales ,employee276 Where sale_id=emp_no and sex='M' and tot_amt>2000277 278 40、 查询sales表中订单金额最高的订单号及订单金额。279 Select order_no,tot_amt from sales 280 where tot_amt=(select max(tot_amt) from sales)281 282 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。283 Select cust_name,addr from customer a,sales b 284 where a.cust_id=b.cust_id and tot_amt>4000285 286 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。287 Select cust_id,sum(tot_amt) from sales288 Group by cust_id 289 Order by sum(tot_amt) desc290 291 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。292 Select cust_id,prod_id,sum(qty),sum(qty*unit_price)/sum(qty)293 From sales a, sale_item b294 Where a.order_no=b.order_no295 Group by cust_id,prod_id296 Order by cust_id,prod_id297 298 44、 查询订购了三种以上产品的订单号。299 Select order_no 300 from sale_item301 Group by order_no302 Having count(*)>3303 304 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。305 Select distinct order_no306 From sale_item a307 Where order_no<>'3'and not exists ( 308 Select * from sale_item b where order_no ='3' and not exists 309 (select * from sale_item c where c.order_no=a.order_no and c.prod_id=b.prod_id))310 311 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。312 Select sale_id,tot_amt from sales313 where tot_amt>all(select tot_amt 314 from sales 315 where sale_id='E0013' and order_date='1996-11-10') 316 317 47、 查询末承接业务的员工的信息。318 Select *319 From employee a320 Where not exists 321 (select * from sales b where a.emp_no=b.sale_id)322 323 48、 查询来自上海市的客户的姓名，电话、订单号及订单金额。324 Select cust_name,tel_no,order_no,tot_amt325 From customer a ,sales b326 Where a.cust_id=b.cust_id and addr='上海市'327 328 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。329 Select sale_id,month(order_date), sum(tot_amt) 330 from sales 331 group by sale_id,month(order_date)332 order by sale_id,month(order_date) desc333 334 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。 335 Select a.prod_id,prod_name,sum(qty),sum(qty*unit_price)336 From sale_item a,product b337 Where a.prod_id=b.prod_id 338 Group by a.prod_id,prod_name339 Order by a.prod_id340 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。341 Select cust_id, cust_name,addr342 From customer343 Where cust_id in (select cust_id from sales 344 Group by cust_id345 Having sum(tot_amt)>346 (Select sum(tot_amt) from sales where cust_id='C0002'))347 348 52、 查询业绩最好的的业务员号、业务员名及其总销售金额。349 select emp_no,emp_name,sum(tot_amt)350 from employee a,sales b351 where a.emp_no=b.sale_id352 group by emp_no,emp_name353 having sum(tot_amt)=354 (select max(totamt)355 from (select sale_id,sum(tot_amt) totamt356 from sales357 group by sale_id) c)358 359 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。360 select a.cust_id, cust_name,c.prod_id,prod_name,qty, unit_price361 from customer a,sales b, sale_item c ,product d362 where a.cust_id=b.cust_id and b.order_no=c.order_no and c.prod_id=d.prod_id363 364 54、 求各部门的平均薪水，要求按平均薪水从小到大排序。365 select dept,avg(salary) 366 from employee367 group by dept 368 order by avg(salary)