---
name: "PQinitTypes"
section: "3"
platform: "linux"
package: "libpqtypes-dev"
version: "1.5.1-9"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/PQinitTypes"
---

# PQinitTypes(3)

Initializes libpqtypes with the libpq event system.

## NAME

PQinitTypes - Initializes libpqtypes with the libpq event system.

## SYNOPSIS

**#include \<libpqtypes.h\>**\

**int PQinitTypes(PGconn \*conn);**\
 **int PQclearTypes(PGconn \****conn***);**

## DESCRIPTION

*libpqtypes makes use of the libpq Event System.  Before using* *libpqtypes, you must initialize libpqtypes as a libpq EventProc.* *The PQinitTypes function takes a PGconn that libpqtypes will be initialized* *with; each PGconn requires its own initialization.*

*PQclearTypes removes all registered types from the given PGconn.  A good use* *for this is after a PQresetXXX call when it might be desired to re-register* *all types that may have gone stale.*

## RETURN VALUE

*PQinitTypes and PQclearTypes return zero if it fails and non-zero if it succeeds.*

## EXAMPLES

### Initializing libpqtypes

*The examples shows how to initialize libpqtypes with the libpq event system.*

```

```

**/\* call prior to any other libpqtypes functions that operate on conn. \*/** **PQinitTypes(conn);**

## AUTHOR

*A contribution of eSilo, LLC. for the PostgreSQL Database Management System.* *Written by Andrew Chernow.*

## REPORTING BUGS

*Report bugs to \<libpqtypes@esilo.com\>.*

## COPYRIGHT

*Copyright (c) 2011 eSilo, LLC. All rights reserved.*\
 *This is free software; see the source for copying conditions.* *There is NO warranty; not even for MERCHANTABILITY or  FITNESS* *FOR A PARTICULAR PURPOSE.*

## SEE ALSO

*None*