string output object contents of blob.
Although primarily used for converting blobs (long varbinary, long varchar) to string output object, blob_to_string_output may also be used to convert from wide string, persistent XML (XPER) and string_output streams.
SQL> use Demo;
Done. -- 20 msec.
SQL> select string_output_string (blob_to_string_output ("Description")) from "Categories";
callret
VARCHAR
_______________________________________________________________________________
Soft drinks, coffees, teas, beers, and ales
Sweet and savory sauces, relishes, spreads, and seasonings
Desserts, candies, and sweet breads
Cheeses
Breads, crackers, pasta, and cereal
Prepared meats
Dried fruit and bean curd
Seaweed and fish
8 Rows. -- 37 msec.
SQL>