• 2022-06-19
    employee表中lastname列保存顾客姓,firstname列保存顾客的名,现在,需要查询顾客的姓名的组合,例如,lastname列中的”张“,同一行firstname列中的”国华“,查询结果应该返回”张国华“,则正确的查询语句应该是( )
    A: select lastname,firstname from employee
    B: select * from employee order by lastname,firstname
    C: select lastname+firstname from employee
    D: select lastname and firstname from employee
  • C

    举一反三

    内容

    • 0

      通过 SQL,在表 Actor 中选择 FirstName 等于 Jim 而 LastName 等于 Carter 的所有记录的表述正确的是( )。 A: SELECT * FROM Actor WHERE FirstName LIKE 'Jim' AND LastName LIKE 'Carter' B: SELECT FirstName='Jim', LastName='Carter' FROM Actor C: SELECT * FROM Actor WHERE FirstName='Jim' AND LastName='Carter' D: SELECT * FROM Actor WHERE FirstName='Jim' OR LastName='Carter'

    • 1

      通过 SQL,在表 Actor 中选择 FirstName 等于 Jim 而 LastName 等于 Carter 的所有记录的表述正确的是( )。 A: SELECT * FROM Actor WHERE FirstName LIKE 'Jim' AND LastName LIKE 'Carter' B: SELECT FirstName='Jim', LastName='Carter' FROM Actor C: SELECT * FROM Actor WHERE FirstName='Jim' AND LastName='Carter' D: SELECT * FROM Actor WHERE FirstName='Jim' OR LastName='Carter'

    • 2

      通过 SQL,在表 Actor 中选择 FirstName 等于 Jim 而 LastName 等于 Carter 的所有记录的表述正确的是( )。 A: SELECT * FROM Actor WHERE FirstName LIKE 'Jim' AND LastName LIKE 'Carter' B: SELECT FirstName='Jim', LastName='Carter' FROM Actor C: SELECT * FROM Actor WHERE FirstName='Jim' AND LastName='Carter' D: SELECT * FROM Actor WHERE FirstName='Jim' OR LastName='Carter'

    • 3

      通过 SQL,在表 Actor 中选择 FirstName 等于 Jim 而 LastName 等于 Carter 的所有记录的表述正确的是( )。 A: SELECT * FROM Actor WHERE FirstName LIKE 'Jim' AND LastName LIKE 'Carter' B: SELECT FirstName='Jim', LastName='Carter' FROM Actor C: SELECT * FROM Actor WHERE FirstName='Jim' AND LastName='Carter' D: SELECT * FROM Actor WHERE FirstName='Jim' OR LastName='Carter'

    • 4

      通过 SQL,您如何在表 Persons 中选择 FirstName 等于 Thomas ,并 且LastName 等于 Carter 的所有记录? A: SELECT * FROM Persons WHERE FirstName LIKE 'Thomas' AND LastName LIKE 'Carter' B: SELECT FirstName='Thomas', LastName='Carter' FROM Persons C: SELECT * FROM Persons WHERE FirstName='Thomas' AND LastName='Carter'