edit column name in sql code example

Example 1: sql add column

ALTER TABLE Customers
ADD Email varchar(255);

Example 2: append column sql

ALTER TABLE table_name
ADD column_name datatype;

--example
ALTER TABLE Customers
ADD Email varchar(255);

Example 3: change column name in sql

MySQL:
ALTER TABLE Customer CHANGE Address Addr char(50);

Oracle:
ALTER TABLE Customer RENAME COLUMN Address TO Addr;

Example 4: modify column name in tsql

sp_rename 'table_name.old_column', 'new_name', 'COLUMN';