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'\" t .\" Title: SPI_modifytuple .\" 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_MODIFYTUPLE" "3" "2017-11-06" "PostgreSQL 9.2.24" "PostgreSQL 9.2.24 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_modifytuple \- create a row by replacing selected fields of a given row .\" SPI_modifytuple .SH "SYNOPSIS" .sp .nf HeapTuple SPI_modifytuple(Relation \fIrel\fR, HeapTuple \fIrow\fR, int \fIncols\fR, int * \fIcolnum\fR, Datum * \fIvalues\fR, const char * \fInulls\fR) .fi .SH "DESCRIPTION" .PP \fBSPI_modifytuple\fR creates a new row by substituting new values for selected columns, copying the original row\*(Aqs columns at other positions\&. The input row is not modified\&. .SH "ARGUMENTS" .PP Relation \fIrel\fR .RS 4 Used only as the source of the row descriptor for the row\&. (Passing a relation rather than a row descriptor is a misfeature\&.) .RE .PP HeapTuple \fIrow\fR .RS 4 row to be modified .RE .PP int \fIncols\fR .RS 4 number of column numbers in the array \fIcolnum\fR .RE .PP int * \fIcolnum\fR .RS 4 array of the numbers of the columns that are to be changed (column numbers start at 1) .RE .PP Datum * \fIvalues\fR .RS 4 new values for the specified columns .RE .PP const char * \fINulls\fR .RS 4 which new values are null, if any (see \fBSPI_execute_plan\fR for the format) .RE .SH "RETURN VALUE" .PP new row with modifications, allocated in the upper executor context; NULL only if \fIrow\fR is NULL .PP On error, \fISPI_result\fR is set as follows: .PP SPI_ERROR_ARGUMENT .RS 4 if \fIrel\fR is NULL, or if \fIrow\fR is NULL, or if \fIncols\fR is less than or equal to 0, or if \fIcolnum\fR is NULL, or if \fIvalues\fR is NULL\&. .RE .PP SPI_ERROR_NOATTRIBUTE .RS 4 if \fIcolnum\fR contains an invalid column number (less than or equal to 0 or greater than the number of column in \fIrow\fR) .RE
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