Shulou(Shulou.com)05/31 Report--

Today, I will talk to you about the modified sentences in mysql, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

The mysql modification statement is as follows:

1. Modify the table name

Usage: alter table old table name rename new table name

Mysql > alter table TYPE rename type

2. Change the column name of the table

Usage: alter table table name change old table name new table name type

Mysql > alter table type change name type_name varchar (30) not null

3. Modify the type of a column in the table

Usage: alter table table name modify column name type

Mysql > alter table type modify type_name varchar

4. Add a column

Usage: alter table table name add column name type

Mysql > alter table type add age int (11)

5. Delete a column

Usage: alter table type drop column name

Mysql > alter table type drop age; after reading the above, do you have any further understanding of the modification statements in mysql? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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