Defining the Indefinable: NULL : Variable Declare « PL SQL « Oracle PL / SQL

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Oracle PL / SQL » PL SQL » Variable Declare

Defining the Indefinable: NULL


 

SQL>

SQL>

SQL> declare

  2    value1 varchar2(100);

  3    value2 varchar2(100) := '';

  4    value3 varchar2(100) := null;

  5    value4 varchar2(100) default null;

  6  begin

  7    null;

  8  end;

  9  /



PL/SQL procedure successfully completed.



SQL>

SQL>

SQL>

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