pg_lo_tell
Name
pg_lo_tell -- return the current seek position of a large object
Synopsis
pg_lo_tell conn descriptor
Description
   pg_lo_tell returns the current read/write
   position in bytes from the beginning of the large object.
  
Arguments
- conn
-       The handle of a connection to the database in which the large object
      exists.
      
- descriptor
-       A descriptor for the large object from
      - pg_lo_open.
 
Return Value
   A zero-based offset in bytes suitable for input to
   pg_lo_lseek.