EMPTY_BLOB, EMPTY_CLOB

Syntax

empty_LOB::=

Text description of empty_LOB

Purpose

EMPTY_BLOB and EMPTY_CLOB return an empty LOB locator that can be used to initialize a LOB variable or, in an INSERT or UPDATE statement, to initialize a LOB column or attribute to EMPTY. EMPTY means that the LOB is initialized, but not populated with data.

Restriction on LOB Locators

You cannot use the locator returned from this function as a parameter to the DBMS_LOB package or the OCI.

Examples

The following example initializes the ad_photo column of the sample pm.print_media table to EMPTY:

UPDATE print_media SET ad_photo = EMPTY_BLOB();