pg_lo_open
Name
pg_lo_open -- open a large object
Synopsis
pg_lo_open conn loid mode
Description
      pg_lo_open opens a large object.
    
Arguments
- conn
-             The handle of a connection to the database in which the large object
            exists.
           
- loid
-             The OID of the large object.
           
- mode
-             Specifies the access mode for the large object.  Mode can be
            either r, w, or
            rw.
           
Return Value
      A descriptor for use in later large-object commands.
    
      A Tcl error will be thrown if an error occurs.
    
Notes
      All large object manipulation must take place within an SQL transaction
      block.
    
      This command uses the PostgreSQL
      libpq
      function lo_open.