Assigning values to variables : Introduction « PL SQL Programming « Oracle PL/SQL Tutorial

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2. PL SQL Programming
3. Introduction

SQL>
SQL>
SQL> declare
  2      v_length NUMBER DEFAULT 5;
  3      v_height NUMBER := 4;
  4      v_width  NUMBER;
  5      v_volume NUMBER;
  6      v_min    NUMBER;
  7  begin
  8      v_width := 3;
  9      v_volume:= v_length*v_width*v_height;
 10      v_min := least(v_length,v_width,v_height);
 11  end;
 12  /

PL/SQL procedure successfully completed.

SQL>