-> This is used to modify size of the data type or the data type it self of an existing column without changing column name.

As we continue exploring the types of Data Definition Language (DDL) operations in SQL and their Pandas equivalents, let's turn our attention to the ALTER command. The ability to modify existing ...

L38 (15–16) where clause: filters rows based on a condition. select * from employee where age > 20; where works with select, update, delete — always use it to be precise. alter command (ddl): what ...

The ALTER TABLE.. MODIFY COLUMN statement modifies a column on an existing table. The modification can include changing the data type and attributes. To rename at the same time, use the CHANGE COLUMN ...