'\" t
.\"     Title: SPI_execute_plan
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2023
.\"    Manual: PostgreSQL 15.4 Documentation
.\"    Source: PostgreSQL 15.4
.\"  Language: English
.\"
.TH "SPI_EXECUTE_PLAN" "3" "2023" "PostgreSQL 15.4" "PostgreSQL 15.4 Documentation"
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.SH "NAME"
SPI_execute_plan \- execute a statement prepared by \fBSPI_prepare\fR
.SH "SYNOPSIS"
.sp
.nf
int SPI_execute_plan(SPIPlanPtr \fIplan\fR, Datum * \fIvalues\fR, const char * \fInulls\fR,
                     bool \fIread_only\fR, long \fIcount\fR)
.fi
.SH "DESCRIPTION"
.PP
\fBSPI_execute_plan\fR
executes a statement prepared by
\fBSPI_prepare\fR
or one of its siblings\&.
\fIread_only\fR
and
\fIcount\fR
have the same interpretation as in
\fBSPI_execute\fR\&.
.SH "ARGUMENTS"
.PP
SPIPlanPtr \fIplan\fR
.RS 4
prepared statement (returned by
\fBSPI_prepare\fR)
.RE
.PP
Datum * \fIvalues\fR
.RS 4
An array of actual parameter values\&. Must have same length as the statement\*(Aqs number of arguments\&.
.RE
.PP
const char * \fInulls\fR
.RS 4
An array describing which parameters are null\&. Must have same length as the statement\*(Aqs number of arguments\&.
.sp
If
\fInulls\fR
is
NULL
then
\fBSPI_execute_plan\fR
assumes that no parameters are null\&. Otherwise, each entry of the
\fInulls\fR
array should be
\*(Aq\ \&\*(Aq
if the corresponding parameter value is non\-null, or
\*(Aqn\*(Aq
if the corresponding parameter value is null\&. (In the latter case, the actual value in the corresponding
\fIvalues\fR
entry doesn\*(Aqt matter\&.) Note that
\fInulls\fR
is not a text string, just an array: it does not need a
\*(Aq\e0\*(Aq
terminator\&.
.RE
.PP
bool \fIread_only\fR
.RS 4
true
for read\-only execution
.RE
.PP
long \fIcount\fR
.RS 4
maximum number of rows to return, or
0
for no limit
.RE
.SH "RETURN VALUE"
.PP
The return value is the same as for
\fBSPI_execute\fR, with the following additional possible error (negative) results:
.PP
SPI_ERROR_ARGUMENT
.RS 4
if
\fIplan\fR
is
NULL
or invalid, or
\fIcount\fR
is less than 0
.RE
.PP
SPI_ERROR_PARAM
.RS 4
if
\fIvalues\fR
is
NULL
and
\fIplan\fR
was prepared with some parameters
.RE
.PP
\fISPI_processed\fR
and
\fISPI_tuptable\fR
are set as in
\fBSPI_execute\fR
if successful\&.