文件名称：mysql 查询练习题
文件大小：2KB
文件格式：TXT
更新时间：2022-01-07 03:14:55
学习
create table sailors( sid char(10) primary key, sname char(20), rating int, age int); create table boats( bid char(10) primary key, bname char(20), color char(10)); create table reserves( sid char(10) , bid char(10) , rdate date, primary key(sid,bid,rdate), foreign key (sid) references sailors(sid) on delete cascade, foreign key (bid) references boats(bid) on delete cascade); insert into sailors(sid,sname,rating,age) values("22","dustin",7,45) ("29","brustus",1,33), ("31","lubber",8,56), ("32","andy",8,26), ("58","rusty",10,35), ("64","horatio",7,35), ("71","zorba",10,35), ("74","horatio",9,35), ("85","art",3,26), ("86","john",1,17), ("95","bob",3,64), ("96","frodo",3,26), ("98","tom",3,17); insert into boats(bid,bname,color) values("101","A","red"), ("102","B","green"), ("103","C","blue"), ("104","D","white") ("105","E","red"), ("106","F","blue"), ("107","G","green"); insert into reserves(sid,bid,rdata) values("22","101","2010-01-08"), ("22","102","2010-01-09"), ("29","103","2010-01-09"), ("31","102","2010-02-11"), ("22","104","2010-03-08"), ("22","103","2010-03-10"), ("32","105","2010-03-11"), ("32","106","2010-03-18"), ("32","102","2010-03-19"), ("58","104","2010-03-20"), ("64","105","2010-03-20"), ("95","101","2010-04-02"), ("85","102","2010-04-05"), ("22","101","2010-04-07"), ("22","105","2010-05-01"), ("22","106","2010-06-18"), ("22","107","2010-07-09"), ("31","106","2010-08-06"), ("32","105","2010-08-06"), ("29","104","2010-08-07"), ("64","103","2010-09-05"), ("58","102","2010-09-09"), ("64","104","2010-11-03"), ("64","105","2010-11-04"), ("31","106","2010-12-0