Introduction

Expressions are constructed by using operands and operators.

An operand is a variable, constant, literal, or function call that contributes a value to an expression.

An operator like + or -indicates what the program should do with the operands.

An example of a simple expression is shown in the following code.

Demo

SQL>
SQL>--  w  ww .  j av a  2 s .  c  om
SQL> declare
  2        v_i1_nr NUMBER;
  3        v_i2_nr NUMBER;
  4  begin
  5        --Represents an example of a binary
  6        --operator / which requires two operands.
  7        v_i1_nr:=10/3;        
  8
  9       
 10      
 11        v_i2_nr:=-vi1_nr;     
 12  end;
 13  /

SQL>

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