Sql alter record

Esempi di codice

17
0

aggiorna colonna sql server

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;
11
0

record di aggiornamento sql

UPDATE table_name
SET column1 = value1, column2 = value2...., columnN = valueN
WHERE [condition];
8
0

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'
0
0

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

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