pg_lo_export
Name
pg_lo_export -- export a large object to a file
Synopsis
pg_lo_export conn loid filename
Description
      pg_lo_export writes the specified large object
      into a file.
    
Arguments
- conn
-             The handle of a connection to the database in which the large object
            exists.
           
- loid
-             The OID of the large object.
           
- filename
-             Specifies the file into which the data is to be exported.
           
Return Value
      Nothing.  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_export.