ALTER TABLE my sql code example

Example 1: how to alter table column name in mysql

ALTER TABLE your_table_name RENAME COLUMN original_column_name TO new_column_name;

Example 2: add new column to the table mysql

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

Example 3: alter table mysql

ALTER TABLE contacts
  ADD last_name varchar(40) NOT NULL
    AFTER contact_id,
  ADD first_name varchar(35) NULL
    AFTER last_name;

Example 4: mysql alter table add column

ALTER TABLE table ADD [COLUMN] column_name column_definition [FIRST|AFTER existing_column];

Example 5: my sql alter table

ALTER TABLE nom_table
DROP nom_colonne