【394天】我爱刷题系列153（2018.03.06）

@(一只心中无码的程序员)专栏

叨叨两句

1. ~

SQL习题048

将titles_test表名修改为titles_2017。
CREATE TABLE IF NOT EXISTS titles_test (
id int(11) not null primary key,
emp_no int(11) NOT NULL,
title varchar(50) NOT NULL,
from_date date NOT NULL,
to_date date DEFAULT NULL);

insert into titles_test values ('1', '10001', 'Senior Engineer', '1986-06-26', '9999-01-01'),
('2', '10002', 'Staff', '1996-08-03', '9999-01-01'),
('3', '10003', 'Senior Engineer', '1995-12-03', '9999-01-01'),
('4', '10004', 'Senior Engineer', '1995-12-03', '9999-01-01'),
('5', '10001', 'Senior Engineer', '1986-06-26', '9999-01-01'),
('6', '10002', 'Staff', '1996-08-03', '9999-01-01'),
('7', '10003', 'Senior Engineer', '1995-12-03', '9999-01-01');

RENAME TO 语句更改表名的基本运用，详情可参考：
http://sqlite.org/lang_altertable.html
http://blog.csdn.net/yujianxiang666/article/details/46724923

ALTER TABLE titles_test RENAME TO titles_2017