通过 SQL，您如何从 "Persons" 表中选取 "FirstName" 列的值等于"Peter" 的所有记录？
举一反三
- 通过 SQL，您如何从 "Persons" 表中选取 "FirstName" 列的值等于"Peter" 的所有记录？ A: SELECT [all] FROM Persons WHERE FirstName='Peter' B: SELECT * FROM Persons WHERE FirstName LIKE 'Peter' C: SELECT [all] FROM Persons WHERE FirstName LIKE 'Peter' D: SELECT * FROM Persons WHERE FirstName='Peter'
- 通过 SQL，您如何从 "Persons" 表中选取 "FirstName" 列的值以 "a" 开头的所有记录？
- 通过 SQL，您如何从 "Persons" 表中选取 "FirstName" 列？
- 通过 SQL，您如何根据 "FirstName" 列降序地从 "Persons" 表返回所有记录？
- 通过 SQL，您如何从 "Persons" 表中选取 "FirstName" 列的值以 "a" 开头的所有记录？ A: SELECT * FROM Persons WHERE FirstName LIKE 'a%' B: SELECT * FROM Persons WHERE FirstName='a' C: SELECT * FROM Persons WHERE FirstName LIKE '%a' D: SELECT * FROM Persons WHERE FirstName='%a%'