Updating multiple rows in pl sql double your dating attraction ebook
Drop me an email and I will promptly and gladly rectify it.Here are the answers to the PL/SQL Challenge questions in last issue’s “Error Management” article: Answer 1: Choices (a), (c), and (d) all raise ORA-00001, also known as DUP_VAL_ON_INDEX inside PL/SQL code.Ok, let us go to something a little more complex: 2 – Situation: You need to call a generic ERP PL/SQL procedure that has 2 “in” parameters and 1 “out” parameter before starts an interface. This “out” parameter brings if there is a business error. Here _in indicates an IN parameter.) That is, however, an awful lot of code to write, read, and maintain.A much better approach is to fetch that row of data into a record, and the best way to declare that record is as follows: CREATE PROCEDURE process_employee ( employee_id_in IN omag_employees.employee_id%TYPE) IS l_employee omag_employees%ROWTYPE; BEGIN SELECT employee_id, last_name, salary INTO l_employee FROM omag_employees WHERE employee_id = employee_id_in; END; When this procedure is compiled, PL/SQL looks up the structure of the omag_employees table and defines a record that has a field for each column in the table, with the same name and datatype.
If the database administrator changes the maximum length of the last_name column to 200, for instance, this procedure’s status will be changed to INVALID.I can also use %ROWTYPE to declare a record that has the same structure as a SELECT statement in a cursor.This is especially helpful for fetching either a subset of columns from a table or columns from multiple tables.Let’s look at examples of the ways to populate a record.Suppose I want to write a program to display the last names of all employees.