change column data type mysql code example

Example 1: mysql alter table add column

ALTER TABLE vendors ADD COLUMN phone VARCHAR(15) AFTER name;

Example 2: alter table column change data type to text mysql

ALTER TABLE tablename MODIFY columnname INTEGER;

Example 3: add new column to the table mysql

ALTER TABLE `TABLE_NAME` 
	ADD `COLUMN_NAME` VARCHAR(50) NULL
    AFTER `COLUMN_NAME_AFTER`;

Example 4: change data type in mysql

ALTER TABLE table_name

CHANGE COLUMN column_name column_name datatype;

Example 5: change column in mysql

#Alter is used
#alter table TableName change CurrentColumnName NewColumnName Specification(size);
alter table TableName change name firstname varchar(30);