What are some common pitfalls when adding a new column to a table in phpMyAdmin?

One common pitfall when adding a new column to a table in phpMyAdmin is forgetting to specify the data type and length for the new column. This can lead to unexpected behavior or errors when inserting data into the table. To avoid this issue, always make sure to specify the data type and length when adding a new column.

ALTER TABLE table_name
ADD column_name VARCHAR(255) NOT NULL;