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2025-04-05 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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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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