VSIZE returns the number of bytes in the internal representation of
expr is null, then this function returns null.
This function does not support
CLOB data directly. However,
CLOBs can be passed in as arguments through implicit data conversion.
"Data Type Comparison Rules" for more information
The following example returns the number of bytes in the
last_name column of the employees in department 10:
SELECT last_name, VSIZE (last_name) "BYTES" FROM employees WHERE department_id = 10 ORDER BY employee_id; LAST_NAME BYTES --------------- ---------- Whalen 6