Bruce YUAN <suanic@xxxxxxxxx> writes: > How to use PQfn() in libpq library? Look into src/interfaces/libpq/fe-lobj.c for several examples. However, please note the comment in the documentation: This interface is somewhat obsolete, as one can achieve similar performance and greater functionality by setting up a prepared statement to define the function call. Then, executing the statement with binary transmission of parameters and results substitutes for a fast-path function call. > Which server functions can be > executed from client? Anything you could call normally can be called this way too. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general