'\" t
.\"     Title: SPI_connect
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 2019
.\"    Manual: PostgreSQL 9.6.12 Documentation
.\"    Source: PostgreSQL 9.6.12
.\"  Language: English
.\"
.TH "SPI_CONNECT" "3" "2019" "PostgreSQL 9.6.12" "PostgreSQL 9.6.12 Documentation"
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.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