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Current File : /opt/alt/postgresql11/usr/share/man/man3/SPI_push.3
'\" t
.\"     Title: SPI_push
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: 2017-11-06
.\"    Manual: PostgreSQL 9.2.24 Documentation
.\"    Source: PostgreSQL 9.2.24
.\"  Language: English
.\"
.TH "SPI_PUSH" "3" "2017-11-06" "PostgreSQL 9.2.24" "PostgreSQL 9.2.24 Documentation"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "NAME"
SPI_push \- push SPI stack to allow recursive SPI usage
.\" SPI_push
.SH "SYNOPSIS"
.sp
.nf
void SPI_push(void)
.fi
.SH "DESCRIPTION"
.PP
\fBSPI_push\fR
should be called before executing another procedure that might itself wish to use SPI\&. After
\fBSPI_push\fR, SPI is no longer in a
\(lqconnected\(rq
state, and SPI function calls will be rejected unless a fresh
\fBSPI_connect\fR
is done\&. This ensures a clean separation between your procedure\*(Aqs SPI state and that of another procedure you call\&. After the other procedure returns, call
\fBSPI_pop\fR
to restore access to your own SPI state\&.
.PP
Note that
\fBSPI_execute\fR
and related functions automatically do the equivalent of
\fBSPI_push\fR
before passing control back to the SQL execution engine, so it is not necessary for you to worry about this when using those functions\&. Only when you are directly calling arbitrary code that might contain
\fBSPI_connect\fR
calls do you need to issue
\fBSPI_push\fR
and
\fBSPI_pop\fR\&.

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