how to update whole column data in sql code example

Example 1: update column sql server

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;

Example 2: how to update data in sql

UPDATING ROW
Update TableName set ColumnName = value where condition;
update scrumteam set firstname =‘Martin' where EmployeeID='1';
update scrumteam set lastname =‘Murtin' where firstname='Tom’;