Definition:
Similar to EMPTY_BLOB, the Oracle EMPTY_CLOB function is used for the initialization of CLOB columns in the table. As a reminder, note that empty CLOB does not mean a LOB of zero length.
Example Usage:
During TABLE definitions, EMPTY_CLOB can be used to set default value of a column:
CREATE TABLE XML_TAB
(DOC_ID NUMBER,
XMLDOC CLOB DEFAULT EMPTY_CLOB);
Table created.
The UPDATE statement below would set the XMLDOC column of the table XML_TAB to empty CLOB.
UPDATE XML_TAB
SET XMLDOC = EMPTY_CLOB();
1 row updated.
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