A: > all
B: > any
C: < any
D: < all
举一反三
- 查询不比计算机类图书便宜的书,语句中SELECT name ,price from book where price____(select price from book where category='计算机')缺省的部分应是()。 A: > all B: > any C:
- 查 询 比 计 算 机 类 图 书 贵 的 书 , 语 句 中 SELECT name ,price from book where[br][/br]price________[br][/br] (select price from book where category='计算机')缺省的部分应是( ). A: all B: any C: D:
- 以下语句的作用是:查询book表中图书价格大于图书均价的图书信息select * from book where _____>(select avg(price) from Book )则____处的内容为,
- 查询book表中price字段的最大值,查询语句是: A: select max(price) from book; B: select min(price) from book; C: select price from min book; D: select price from max book;
- 以下____完整,语句的作用是:查询book表中图书价格大于图书均价的图书信息select * from book where _____>;(select avg(price) from Book )
内容
- 0
查询“图书”表中书名含有“计算机”的图书信息,正确的选项是______。 A: select * from book where bname like ‘_计算机_’ B: select * from book where bname like ‘_计算机%’ C: select * from book where bname like ‘%计算机_’ D: select * from book where bname like ‘%计算机%’
- 1
以下语句的作用是:查询book表中图书价格大于图书均价的图书信息 select * from book where _____>( select avg(price) from Book ) 则____处的内容为,
- 2
查询被借阅过的图书,语句 SELECT name from book where( ) 的条件,下列哪[br][/br]一个不能实现. A: no =all (select bno from borrow) B: no =any (select bno from borrow) C: no in (select bno from borrow) D: exists (select * from borrow where bno=book.bno)
- 3
查询图书名称含有“程序”的图书信息。语句如下:SELECT BookCode, BookName, Author, Price, DiscountFROM BookWHERE BookName LIKE ________
- 4
要修改book(id,name,price)表中所有书名中以“计算机”开头的书籍的价格上幅5元,可用( )语句。 A: UPDATE book SET price =price+5 WHERE name = ‘计算机*’ B: UPDATE book SET price =price+5 WHERE name LIKE ‘计算机*’ C: UPDATE book SET price =price+5 WHERE name LIKE = ‘计算机%’ D: UPDATE book SET price =price+5 WHERE name LIKE ‘计算机%’