aggiorna colonna sql server
UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;
record di aggiornamento sql
UPDATE table_name
SET column1 = value1, column2 = value2...., columnN = valueN
WHERE [condition];
aggiornamento sql da seleziona
UPDATE
Table_A
SET
Table_A.col1 = Table_B.col1,
Table_A.col2 = Table_B.col2
FROM
Some_Table AS Table_A
INNER JOIN Other_Table AS Table_B
ON Table_A.id = Table_B.id
WHERE
Table_A.col3 = 'cool'
tabella alter sql
-- With check if field already exists
IF NOT EXISTS(SELECT 1 FROM sys.columns
WHERE Name = N'Email'
AND Object_ID = Object_ID(N'dbo.Customers'))
BEGIN
ALTER TABLE Customers
ADD Email varchar(255);
END