销售部门用得到sql吗_工具

销售部门用得到sql。具体用spl来做以下事情：在MySQL数据库中对公司的销售数据进行查询统计，根据统计结果进行分析并得出结论。本次项目实践 *** 作环境为MySQL server 57，数据库连接客户端工具用的是Navicat for MySQL 1113。熟悉数据库 *** 作工具：“工欲善其器，必先利其器”，首先需要熟悉数据库 *** 作工具navicat的相关 *** 作，熟悉快捷键的用法，对提高工作效率有很大帮助。

解题思路分析：

第一步：创建表，确定数据类型，建立约束

--删除数据表

drop table purcase;

drop table product;

drop table customer;

---创建数据表

---解题思路分析：

---第一步：创建表，确定数据类型，建立约束

----创建商品表product

create table product (

productid varchar2(10) ,

productname varchar2(20) NOT NULL,

unitprice number,

category varchar2(20),

provider varchar2(20),

CONSTRAINT pk_productid primary key (productid),

CONSTRAINT CK_unitprice CHECK (unitprice>0)

);

--创建顾客表customer：

create table customer(

customerid varchar2(10),

name varchar2(20) NOT NULL,

location varchar2(20),

CONSTRAINT pk_customerid primary key(customerid)

);

--创建购买记录表 purcase：

create table purcase(

customerid varchar2(10),

productid varchar2(10),

quantity number,

CONSTRAINT FK_customerid FOREIGN KEY(customerid) REFERENCES customer(customerid) on delete cascade,

CONSTRAINT FK_productid FOREIGN KEY(productid) REFERENCES product(productid) on delete cascade,

CONSTRAINT CK_quantity CHECK(quantity BETWEEN 0 AND 20)

);

---测试数据的编写：

insert into product (productid,productname,unitprice,category,provider)

values('M01','佳洁士',800,'牙膏','宝洁');

insert into product (productid,productname,unitprice,category,provider)

values('M02','高露洁',650,'牙膏','高露洁');

insert into product (productid,productname,unitprice,category,provider)

values('M03','洁诺',500,'牙膏','联合利华');

insert into product (productid,productname,unitprice,category,provider)

values('M04','舒肤佳',300,'香皂','宝洁');

insert into product (productid,productname,unitprice,category,provider)

values('M05','夏士莲',500,'香皂','联合利华');

insert into product (productid,productname,unitprice,category,provider)

values('M06','雕牌',800,'洗衣粉','纳爱斯');

insert into product (productid,productname,unitprice,category,provider)

values('M07','中华',350,'牙膏','联合利华');

insert into product (productid,productname,unitprice,category,provider)

values('M08','汰渍',300,'洗衣粉','宝洁');

insert into product (productid,productname,unitprice,category,provider)

values('M09','碧浪',400,'洗衣粉','宝洁');

insert into customer (customerid, name ,location)

values('C01','Dennis','海淀');

insert into customer (customerid, name ,location)

values('C02','John','朝阳');

insert into customer (customerid, name ,location)

values('C03','Tom','东城');

insert into customer (customerid, name ,location)

values('C04','Jenny','东城');

insert into customer (customerid, name ,location)

values('C05','Rick','西城');