The code uses a Vector to contain the data of all rows; each row has two columns of values.It then associates the Vector with an Ago Tree Data Manager, which permits navigation among and the manipulation of rows in the data set.FOR Rec IN Cur LOOP SELECT a.status INTO v_status from Employee_Status a where a.
clinton in dating - Updating row selected by cursor
If one of these conditions occurs, the specified statement executes.
The statement can be a simple statement such as SET var_name = value, or a compound statement written using BEGIN and END.
Also keep in mind that the cursor SELECT statement cannot have an INTO clause; it's strictly read-only.
While we won't be looking at the use of multiple cursors within the same stored proc, it is entirely possible to have multiple cursors in the same code block, but each cursor must have a unique name. HANDLER statement specifies a handler that deals with one or more conditions.
Oracle uses cursors under the hood for the update and for selects, which is going a bit beyond what you're asking.
But no, you don't have to select the rows to be updated in a visible explicit or implicit cursor.
A cursor is a special kind of loop for traversing through an SQL resultset one row at a time.
That allows us to perform operations on every record on a one-by-one basis.
Then by using the row cursor, you can find out which row the user wants to delete and proceed to delete it by removing an element of the vector.
This example also shows how to add an element to a vector, where the element's data is user input obtained from text fields. It creates a dynamic view with rows of data that the user can add to or delete from.
Once I have done this I need to use this status for calling custom business logic and not the original status retrieved by the cursor. Emp_No; IF(v_status = 'Active') THEN -- Custom Business Logic ELSE -- Business logic END IF; END LOOP; clause are released and other sessions are free to update the same rows.