Access update query not updating

To list the session cursors that each user session currently has opened and parsed, query the dynamic performance view Note: Generally, PL/SQL parses an explicit cursor only the first time the session opens it and parses a SQL statement (creating an implicit cursor) only the first time the statement runs. A SQL statement is reparsed only if it is aged out of the cache by a new SQL statement.Although you must close an explicit cursor before you can reopen it, PL/SQL need not reparse the associated query.If you open the cursor without specifying the actual parameter, then the formal parameter has its default value.Example 6-12 creates an explicit cursor whose formal parameter represents a location ID.Changing the values of the variables later does not change the result set.In Example 6-8, the explicit cursor query references the variable DECLARE sal employees.salary%TYPE; sal_multiple employees.salary%TYPE; factor INTEGER := 2; CURSOR c1 IS SELECT salary, salary*factor FROM employees WHERE job_id LIKE 'AD_%'; BEGIN DBMS_OUTPUT.If you close and immediately reopen an explicit cursor, PL/SQL does not reparse the associated query. To save an attribute value for later use, assign it to a local variable immediately.

TO_CHAR( is a session cursor that you construct and manage.When opened with a specified job and maximum salary, the cursor query selects the employees with that job who are overpaid (for each such employee, the query selects the first and last name and amount overpaid).Next, the example creates a procedure that prints the cursor query result set (for information about procedures, see Chapter 8, "PL/SQL Subprograms").

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