sql column name change code example

Example 1: how to change a collumn name in sql

ALTER TABLE `table_name` 
CHANGE `old_name` `new_name` VARCHAR(10) 
CHARACTER SET utf8 
COLLATE utf8_general_ci NULL 
DEFAULT NULL;

Example 2: how to rename columns in sql server

EXEC sp_rename 'Sales.SalesTerritory.TerritoryID', 'TerrID', 'COLUMN';

Example 3: change column name sql

ALTER TABLE users
 ALTER COLUMN first username varchar(20);