Retrieves a stream that can be used to append a stream of Unicode characters to the end of the CLOB value that this Clob object represents.
The pos argument is reserved for future use.
setCharacterStream() returns a stream to which Unicode characters can be written.
If the value of the pos argument is less than 1, setCharacterStream() throws an SQLException to indicate that a Java external routine called a Blob or Clob method with invalid arguments, setting the SQLException fields as follows.
|SQLState Field||vendorCode Field|