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SPI_getbinval.3
'\" t .\" Title: SPI_getbinval .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> .\" Date: 2023 .\" Manual: PostgreSQL 13.13 Documentation .\" Source: PostgreSQL 13.13 .\" Language: English .\" .TH "SPI_GETBINVAL" "3" "2023" "PostgreSQL 13.13" "PostgreSQL 13.13 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_getbinval \- return the binary value of the specified column .SH "SYNOPSIS" .sp .nf Datum SPI_getbinval(HeapTuple \fIrow\fR, TupleDesc \fIrowdesc\fR, int \fIcolnumber\fR, bool * \fIisnull\fR) .fi .SH "DESCRIPTION" .PP \fBSPI_getbinval\fR returns the value of the specified column in the internal form (as type Datum)\&. .PP This function does not allocate new space for the datum\&. In the case of a pass\-by\-reference data type, the return value will be a pointer into the passed row\&. .SH "ARGUMENTS" .PP HeapTuple \fIrow\fR .RS 4 input row to be examined .RE .PP TupleDesc \fIrowdesc\fR .RS 4 input row description .RE .PP int \fIcolnumber\fR .RS 4 column number (count starts at 1) .RE .PP bool * \fIisnull\fR .RS 4 flag for a null value in the column .RE .SH "RETURN VALUE" .PP The binary value of the column is returned\&. The variable pointed to by \fIisnull\fR is set to true if the column is null, else to false\&. .PP \fISPI_result\fR is set to SPI_ERROR_NOATTRIBUTE on error\&.
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