description Use ALTER TABLE column_definition syntax to specify the properties of a column that are added to a table. The data type for the column that is added and the schema to which it belongs.

CREATE TABLE test_t2 (pk INT PRIMARY KEY, label VARCHAR(10), amount DOUBLE, created DATETIME); INSERT INTO test_t1 (id, name, score) VALUES (1, 'Alice', 85); INSERT ...

Alter Datatype of Very large table with almost no downtime Sometimes, your INT columns run out of space, and you need to alter them to be a larger datatype, like BIGINT. Usually, when you do this, you ...