Lab 4.1 Making Use of DML in PL/SQL

Lab Objectives

After this Lab, you will be able to:

✓ Use the SELECT INTO Syntax for Variable Initialization

✓ Use DML in a PL/SQL Block

✓ Make Use of a Sequence in a PL/SQL Block

Variables Initialization with SELECT INTO

In PL/SQL, there are two main methods of giving value to variables in a PL/SQL block. The first one, which you learned in Chapter 2, “PL/SQL Concepts,” is initialization with the “:=” syntax. In this lab we will learn how to initialize a variable with a select statement by making use of SELECT INTO syntax.

A variable that has been declared in the declaration section of the PL/SQL block can later be given a value with a SELECT statement. The correct syntax is as follows:

 SELECT item_name ...

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