Oracle SQL: Update a table with data from another table
This is called a correlated update
UPDATE table1 t1 SET (name, desc) = (SELECT t2.name, t2.desc FROM table2 t2 WHERE t1.id = t2.id) WHERE EXISTS ( SELECT 1 FROM table2 t2 WHERE t1.id = t2.id )Assuming the join results in a key-preserved view, you could also
UPDATE (SELECT t1.id, t1.name name1, t1.desc desc1, t2.name name2, t2.desc desc2 FROM table1 t1, table2 t2 WHERE t1.id = t2.id) SET name1 = name2, desc1 = desc2
Try this:
MERGE INTO table1 t1USING(-- For more complicated queries you can use WITH clause hereSELECT * FROM table2)t2ON(t1.id = t2.id)WHEN MATCHED THEN UPDATE SETt1.name = t2.name,t1.desc = t2.desc;
try
UPDATE Table1 T1 SETT1.name = (SELECT T2.name FROM Table2 T2 WHERE T2.id = T1.id),T1.desc = (SELECT T2.desc FROM Table2 T2 WHERE T2.id = T1.id)WHERE T1.id IN (SELECT T2.id FROM Table2 T2 WHERE T2.id = T1.id);