pg_lo_tell — Return the current seek position of a large object
pg_lo_tellconn
descriptor
pg_lo_tell
returns the current read/write
position in bytes from the beginning of the large object.
conn
The handle of the connection.
descriptor
A descriptor for the large object from pg_lo_open.
The current zero-based byte offset in the large object, suitable for use with pg_lo_lseek.
A Tcl error will be thrown if an error occurs.