Oracle PL/SQL/Large Objects/EMPTY BLOB

difference between EMPTY_BLOB() & EMPTY_CLOB() and NULL

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SQL> SQL> CREATE TABLE lobdemo (

 2    key NUMBER,
 3    clob_col CLOB,
 4    blob_col BLOB);

Table created. SQL> SQL> SQL> INSERT INTO lobdemo (key, blob_col, clob_col)

 2    VALUES (80, EMPTY_BLOB(), EMPTY_CLOB());

1 row created. SQL> SQL> INSERT INTO lobdemo (key, blob_col, clob_col)

 2    VALUES (81, NULL, NULL);

1 row created. SQL> SQL> drop table lobdemo; Table dropped. SQL>

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