update table column code example

Example 1: sql update

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

Example 2: update column sql server

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

Example 3: sql change column in existing table

'This adds 'NOT NULL' to excisting column counting in the table mytable'
ALTER TABLE mytable ALTER COLUMN counting INT NOT NULL;