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Oracle EMPTY_CLOB function
Oracle PLSQL EMPTY_CLOB function can be used to initialize empty LOB columns in INSERT or UPDATE operators or it can be used to initialize LOB variable.
Oracle/PLSQL syntax of EMPTY_CLOB function
EMPTY_CLOB ()
Parameters or arguments
There are no parameters or arguments for the EMPTY_CLOB function.
The EMPTY_CLOB function can be used in the following versions of Oracle/PLSQL
| Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i |
Let’s consider some examples of the Oracle EMPTY_CLOB function and learn how to use the EMPTY_CLOB function in Oracle PLSQL.
UPDATE customs
SET custom_photo = EMPTY_CLOB();
This example EMPTY_CLOB initializes the product_photo column into an empty column. This is different from setting a LOB field to null or a LOB row with length 0.
BLOB and CLOB in Oracle Database
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