CHANGE COLUMN mysql code example

Example 1: add column in mysq

ALTER TABLE Table_name
ADD Email varchar(255);

Example 2: how to alter table column name in mysql

ALTER TABLE your_table_name RENAME COLUMN original_column_name TO new_column_name;

Example 3: mysql add column

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

Example 4: change column name in mysql

ALTER TABLE tableName CHANGE `oldcolname` `newcolname` datatype(length);

Example 5: 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 6: update column mysql with alter

ALTER TABLE table_name
  MODIFY column_name column_definition
    [ FIRST | AFTER column_name ];