Memory allocation differences between the CHAR and VARCHAR2 datatypes : CHAR « Data Type « Oracle PL / SQL

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Oracle PL / SQL » Data Type » CHAR

Memory allocation differences between the CHAR and VARCHAR2 datatypes

    

SQL>

SQL> DECLARE

  2    c CHAR(32767)     := ' ';

  3    v VARCHAR2(32767) := ' ';

  4  BEGIN

  5    dbms_output.put_line('c is ['||LENGTH(c)||']');

  6    dbms_output.put_line('v is ['||LENGTH(v)||']');

  7    v := v || ' ';

  8    dbms_output.put_line('v is ['||LENGTH(v)||']');  END;

  9  /

c is [32767]

v is [1]

v is [2]



PL/SQL procedure successfully completed.



SQL>

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