CHARTOROWID converts a value from a text data type to a ROWID data type.
For more information about the ROWID pseudocolumn, refer to the Oracle Database SQL Language Reference.
ROWID
CHARTOROWID(char)
char is a text expression that forms a valid rowid.
chartorowid('AAAN6EAALAAAAAMAAB') returns the text string AAAN6EAALAAAAAMAAB as a rowid.