In MySQL, how would you change the data type of a column in an existing table?ALTER TABLE table_name MODIFY column_name new_data_typeCHANGE TABLE table_name column_name new_data_typeMODIFY TABLE table_name column_name new_data_typeALTER TABLE table_name CHANGE column_name new_data_type

To change the data type of a column in an existing table in MySQL, you would use the ALTER TABLE statement, followed by the MODIFY keyword. Here is the step-by-step process:

1. First, you need to know the name of the table and the column that you want to modify. Let's assume the table name is 'table_name' and the column name is 'column_name'.

2. Next, decide on the new data type for the column. Let's say you want to change the data type to 'new_data_type'.

3. Now, you can write the SQL statement to modify the column data type. The syntax is as follows:

   ALTER TABLE table_name MODIFY column_name new_data_type;

4. Run this SQL statement in your MySQL client to apply the change.

Please replace 'table_name', 'column_name', and 'new_data_type' with your actual table name, column name, and new data type respectively.