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'\" t .\" Title: SPI_connect .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> .\" Date: 2018 .\" Manual: PostgreSQL 9.6.9 Documentation .\" Source: PostgreSQL 9.6.9 .\" Language: English .\" .TH "SPI_CONNECT" "3" "2018" "PostgreSQL 9.6.9" "PostgreSQL 9.6.9 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" SPI_connect \- connect a procedure to the SPI manager .SH "SYNOPSIS" .sp .nf int SPI_connect(void) .fi .SH "DESCRIPTION" .PP \fBSPI_connect\fR opens a connection from a procedure invocation to the SPI manager\&. You must call this function if you want to execute commands through SPI\&. Some utility SPI functions can be called from unconnected procedures\&. .PP If your procedure is already connected, \fBSPI_connect\fR will return the error code SPI_ERROR_CONNECT\&. This could happen if a procedure that has called \fBSPI_connect\fR directly calls another procedure that calls \fBSPI_connect\fR\&. While recursive calls to the SPI manager are permitted when an SQL command called through SPI invokes another function that uses SPI, directly nested calls to \fBSPI_connect\fR and \fBSPI_finish\fR are forbidden\&. (But see \fBSPI_push\fR and \fBSPI_pop\fR\&.) .SH "RETURN VALUE" .PP SPI_OK_CONNECT .RS 4 on success .RE .PP SPI_ERROR_CONNECT .RS 4 on error .RE