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






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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