libpq is the C
application programmer's interface to
PostgreSQL. libpq is a set
of library routines that allow client programs to pass queries to the
PostgreSQL backend server and to receive the
results of these queries. libpq is also the
underlying engine for several other PostgreSQL
application interfaces, including libpq++ (C++),
libpgtcl (Tcl), Perl, and
ecpg. So some aspects of libpq's behavior will be
important to you if you use one of those packages.
Three short programs are included at the end of this section to show how
to write programs that use libpq. There are several
complete examples of libpq applications in the
following directories:
| src/test/examples |
| src/bin/psql |
Frontend programs that use libpq must include the
header file libpq-fe.h and must link with the
libpq library.
