This command loads a shared library file into the
servers address space. If the file has been loaded already, the command does nothing. Shared library files that contain C functions are automatically loaded whenever one of their functions is called. Therefore, an explicit
is usually only needed to load a library that modifies the servers behavior through
rather than providing a set of functions.
The file name is specified in the same way as for shared library names in
CREATE FUNCTION (CREATE_FUNCTION(7)); in particular, one can rely on a search path and automatic addition of the systems standard shared library file name extension. See
Section 35.9, C-Language Functions, in the documentation
for more information on this topic.
Non-superusers can only apply
to library files located in
must begin with exactly that string. (It is the database administrators responsibility to ensure that only
libraries are installed there.)