How to Convert MySQL Column Types
You can use the CAST() or CONVERT() functions in MySQL to convert field types.
- Utilize the CAST() function:
- Convert the data type of the column_name in table_name to new_data_type.
- For example, converting a string type field to an integer type.
- Choose the age from students as an unsigned number.
- In the example above, the age field will be converted to an unsigned integer type.
- Utilize the CONVERT() function:
- Change the data type of the column in the table.
- For example, converting a string-type field to a date type.
- Retrieve the date information from the column date_str in the events table.
- In the above example, the date_str field will be converted to a date type.
These functions can be used to convert the data type of one field to another data type to meet specific requirements. Be sure to ensure the conversion is valid when making the type change, as it could result in errors or data loss.