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将titles_test表名修改为titles_2017

[编程题]将titles_test表名修改为titles_2017

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算法知识视频讲解

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');

示例1

输入

drop table if exists titles_test;
drop table if exists titles_2017;
CREATE TABLE 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');

输出

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

算法知识视频讲解

牛客题解官

发表于 2025-03-18 10:18:55

精华题解根据题目要求，我们需要将表名 titles_test 修改为 titles_2017。知识点 1. 重命名表在 MySQL 中，ALTER TABLE ... RENAME TO 是标准语法，用于重命名表。语法： ALTER TABLE old_table_name RENAME TO n 展开全文

不是江小白

发表于 2020-10-29 13:11:06

看到有朋友在疑问为啥会是ALTER TABLE + 修改的表+修改内容/方式。这里补充一下在MySQL中ALTER TABLE 语句的用法。常见的有:（我写的不是很规范，只是方便大家理解；更规范的语法请参考MySQL官方文档：https://dev.mysql.com/doc/refman/8. 展开全文