A.show database;顯示所有數(shù)據(jù)庫B.show table;顯示所有表C.show tables;顯示所有表D.show databases;顯示所有數(shù)據(jù)庫
A.獨(dú)立性 B.持久性 C.原子性 D.一致性
A.SELECT Name,Hire Date FROM tbl Employees B.SELECT Name,Hire Date FROM tbl Employees WHERE Hire Date=’2009-01-01’OR‘2009-12-31’ C.SELECT Name,Hire Date FROM tbl Employees WHERE Hire Date BETWEEN’2008-12-31’AND‘2010-01-01’ D.SELECT Name,Hire Date FROM tbl Employees WHERE substring(Hire Date,1,4)=2009;