Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-01 |
|
|
View PDF |
Syntax
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();