Question

Suppose I have one table table1 and another table table2. Both has same column name say “description”. table1 has some data in description column and table2 has no(null) data. So how can i update data from table1 into table2 description column ?.They have one column which has same values in both and unique too. any idea?

Answer 1

This will work provided the key is Unique:

UPDATE db2.table2 SET description = (SELECT table1.description FROM db1.table1 AS table1 WHERE table1.id = db1.table2.id)