update sql for multiple columns code example

Example 1: sql update multiple columns from another table

-- Oracle
UPDATE table2 t2 SET (VALUE1, VALUE2) = 
    (SELECT COL1 AS VALUE1, COL1 AS VALUE2 FROM table1 t1 WHERE t1.ID = t2.ID);
-- SQL Server
UPDATE table2 t2 SET
    t2.VALUE1 = t1.COL1,
    t2.VALUE2 = t1.COL2
FROM table1 t1
INNER JOIN t2 ON t1.ID = t2.ID;
-- MySQL
UPDATE table2 t2 INNER JOIN table1 t1 USING (ID)
SET T2.VALUE1 = t1.COL1, t2.VALUE2 = t1.COL2;

Example 2: sql update multiple tables

/*You can't update multiple tables in one statement,
however, you can use a transaction to make sure that
two UPDATE statements are treated atomically.
You can also batch them to avoid a round trip.*/


BEGIN TRANSACTION;

UPDATE Table1
  SET Table1.LastName = 'DR. XXXXXX' 
FROM Table1 T1, Table2 T2
WHERE T1.id = T2.id
and T1.id = '011008';

UPDATE Table2
SET Table2.WAprrs = 'start,stop'
FROM Table1 T1, Table2 T2
WHERE T1.id = T2.id
and T1.id = '011008';

COMMIT;