Hi, Marcos, Marcos wrote: >>What problem are you trying to solve? > > I want know how I make to use a prepared plan > ( http://www.postgresql.org/docs/8.1/static/sql-prepare.html ). I read > that I need to use the SPI_PREPARE and SPI_EXEC in my code, but I didn't > understand how make it. Which interface are you using to connect to PostgreSQL? libpq, libpqxx, pgjdbc, python-popy? E. G. PGJDBC handles prepared plans transparently by using the PreparedStatement class. If you use command line PSQL, you can use the PREPARE commands. Markus -- Markus Schaber | Logical Tracking&Tracing International AG Dipl. Inf. | Software Development GIS Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org