MySQL Field Length: How to Get Column Size

To obtain the length of a field in a MySQL database, you can use the CHARACTER_MAXIMUM_LENGTH column to query. Here is an example SQL query statement:

SELECT COLUMN_NAME, CHARACTER_MAXIMUM_LENGTH
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'your_database_name' AND TABLE_NAME = 'your_table_name';

Replace ‘your_database_name’ with the name of your database and ‘your_table_name’ with the name of your table. This query will return all fields of the specified table along with their corresponding maximum length.

Please note that this method only applies to data types such as CHAR, VARCHAR, VARBINARY, BINARY, TEXT, ENUM, and SET. Other data types like numeric or date types do not have fixed character lengths.