How to create full-text indexes in MySQL?

To create a full-text index in MySQL, you need to follow these steps:

1. Make sure your MySQL version supports full-text indexing. The full-text indexing feature in MySQL is available in version 5.6.4 and above.
2. Make sure your table is using a storage engine that supports full-text indexes. Full-text indexes are only available for MyISAM and InnoDB storage engines. If your table is using a different storage engine, you will need to convert it to MyISAM or InnoDB.
3. Select the columns that you want to create a full-text index on. Typically, you would choose columns that contain textual data, such as columns of type varchar or text.
4. Use the ALTER TABLE statement to add a full-text index to a column in a table. Here is an example of an ALTER TABLE statement for creating a full-text index.
5. Add a full-text index to the specified table.
6. “表名” refers to the name of the table you want to add a full-text index to, while “column_name” is the name of the column you want to add the full-text index to.
7. Utilize the full-text search feature in your application. To perform a full-text search, you can use the MATCH AGAINST statement. Here is an example:
8. Retrieve all rows from the table where the column matches the search term.
9. In this case, “table name” is the name of the table you want to perform a full-text search on, “column name” is the name of the column you want to search, and “search term” is the keyword you want to search for.

Please note that creating a full-text index may take some time, especially for large tables. Additionally, the performance of full-text indexes may also be affected by other factors such as the size and amount of data in the table. Therefore, you may need to optimize and adjust according to the requirements of your application.