change column data type in mysql code example

Example 1: mysql show column data types

SELECT DATA_TYPE from INFORMATION_SCHEMA.COLUMNS where
table_schema = ’yourDatabaseName’ and table_name = ’yourTableName’.

Example 2: alter table add column

ALTER TABLE table_name 
ADD column_name datatype;

Example 3: change data type in mysql

ALTER TABLE table_name

CHANGE COLUMN column_name column_name datatype;