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'\" t
.\" Title: SPI_saveplan
.\" Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2022
.\" Manual: PostgreSQL 14.5 Documentation
.\" Source: PostgreSQL 14.5
.\" Language: English
.\"
.TH "SPI_SAVEPLAN" "3" "2022" "PostgreSQL 14.5" "PostgreSQL 14.5 Documentation"
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.\" * Define some portability stuff
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.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.ie \n(.g .ds Aq \(aq
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.nh
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.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
SPI_saveplan \- save a prepared statement
.SH "SYNOPSIS"
.sp
.nf
SPIPlanPtr SPI_saveplan(SPIPlanPtr \fIplan\fR)
.fi
.SH "DESCRIPTION"
.PP
\fBSPI_saveplan\fR
copies a passed statement (prepared by
\fBSPI_prepare\fR) into memory that will not be freed by
\fBSPI_finish\fR
nor by the transaction manager, and returns a pointer to the copied statement\&. This gives you the ability to reuse prepared statements in the subsequent invocations of your C function in the current session\&.
.SH "ARGUMENTS"
.PP
SPIPlanPtr \fIplan\fR
.RS 4
the prepared statement to be saved
.RE
.SH "RETURN VALUE"
.PP
Pointer to the copied statement; or
NULL
if unsuccessful\&. On error,
\fISPI_result\fR
is set thus:
.PP
SPI_ERROR_ARGUMENT
.RS 4
if
\fIplan\fR
is
NULL
or invalid
.RE
.PP
SPI_ERROR_UNCONNECTED
.RS 4
if called from an unconnected C function
.RE
.SH "NOTES"
.PP
The originally passed\-in statement is not freed, so you might wish to do
\fBSPI_freeplan\fR
on it to avoid leaking memory until
\fBSPI_finish\fR\&.
.PP
In most cases,
\fBSPI_keepplan\fR
is preferred to this function, since it accomplishes largely the same result without needing to physically copy the prepared statement\*(Aqs data structures\&.
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