Updating a record through cursor
DECLARE 2 CURSOR C1 IS SELECT EMP_CODE, EMP_SALARY FROM EMP; 3 BEGIN 4 FOR I IN C1 5 LOOP 6 UPDATE EMP_SAL 7 SET EMP_SALARY = I. EMP_CODE; 9 END LOOP; 10 END; 11 / PL/SQL procedure successfully completed.The goal is to manipulate the data in a way that the Value column has iterative values from 1 to 50 instead of just values of 1.You can add more column names in a comma-separated list if you need to make more fields updatable.To demonstrate how to use a cursor to update records we'll create a running total of the number of Oscars our films have won.You can make things a little more obvious by explicitly stating that the cursor is to be used for updating, as shown below: This cursor can be used to update any field from the underlying data set.To make things even more specific you can list which columns from the data set you would like to make updatable, as shown below: The code above ensures that only one field from the underlying data set can be updated.In this final part we'll look at how you can use a cursor to modify data as well.
Consider the following table: Here is how you use the Update Cursor.
Solution: One way to do it is with a cursor which will update the rows.
Another way is to write a SSIS package which uses a loop container.
Changes made with this clause affect only the row on which the cursor is positioned. Business Entity ID) ; OPEN complex_cursor; FETCH FROM complex_cursor; UPDATE Human Resources.
When a cursor is based on a join, only the (SELECT MAX(Rate Change Date) FROM Human Resources.