blob: bd9c81f33dab68512657846a6bf9e30653c78cd0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
'\" t
.\" Title: SPI_getbinval
.\" Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2024
.\" Manual: PostgreSQL 16.2 Documentation
.\" Source: PostgreSQL 16.2
.\" Language: English
.\"
.TH "SPI_GETBINVAL" "3" "2024" "PostgreSQL 16.2" "PostgreSQL 16.2 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\&.
|
