update records in one table based on values in another table
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SQL> -- update records in one table based on values in another table.SQL>SQL> UPDATE emp 2 SET ename = ( SELECT dname 3 FROM dept 4 WHERE emp.deptno = dept.deptno) 5 WHERE EXISTS 6 ( SELECT dname 7 FROM dept 8 WHERE emp.deptno = dept.deptno);SQL>
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