How to update multiple records at once in MySQL?

In MySQL, you can use the UPDATE statement to modify multiple rows of data at once. The specific steps are as follows:

1. Identify the data to be modified and construct the appropriate UPDATE statement.
2. Update the table name with new values for column 1, column 2, etc. based on certain conditions.
3. In this case, the table name is the name of the table to be modified, column1, column2, etc. are the names of the columns to be modified, newValue1, newValue2, etc. are the new values to be updated. The WHERE condition is used to specify the range of data to be modified. If the WHERE condition is not specified, all the data in the table will be modified.
4. Execute UPDATE statement.
5. Update the table name with the new values for column 1, column 2, etc. where the condition is met.

Important points to consider:

1. Please be cautious when executing the UPDATE statement, make sure to carefully determine the WHERE condition to avoid mistakenly modifying data that does not need to be changed.
2. You can use the LIMIT keyword to restrict the number of rows that can be modified at a time to prevent accidental changes. For example, by using the UPDATE statement like this: UPDATE table_name SET column1=new_value1, column2=new_value2, … WHERE condition LIMIT number, you can limit the number of rows that can be modified at a time to the specified number.