How to use the replace function in MySQL?

In MySQL, the REPLACE statement is used to replace data in a table. Its syntax is as follows:

REPLACE INTO table_name (column1, column2, ...)
VALUES (value1, value2, ...);

This statement will first attempt to insert data, and if the data already exists, it will replace the original data. It’s important to note that the REPLACE statement will delete the original data before inserting the new data, causing the auto-increment ID value to be reassigned.

Furthermore, if you want to replace certain fields in a record, you can use the UPDATE statement to achieve this.

UPDATE table_name
SET column1 = value1, column2 = value2
WHERE condition;

This statement will update the value of a specific field in records that meet the criteria in the table.