摘要:
SQL面试题(1)create table testtable1(id int IDENTITY,department varchar(12) )select * from testtable1insert into testtable1 values('设计')insert into testtable1 values('市场')insert into testtable1 values('售后')/*结果id department1 设计2 市场3 售后 */create table testtable2(id int IDENTITY,dp 阅读全文