PostgreSQL Source Code: src/include/access/tupdesc_details.h Source File

PostgreSQL Source Code git master
tupdesc_details.h
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1/*-------------------------------------------------------------------------
2 *
3 * tupdesc_details.h
4 * POSTGRES tuple descriptor definitions we can't include everywhere
5 *
6 *
7 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/access/tupdesc_details.h
11 *
12 *-------------------------------------------------------------------------
13 */
14
15#ifndef TUPDESC_DETAILS_H
16#define TUPDESC_DETAILS_H
17
18/*
19 * Structure used to represent value to be used when the attribute is not
20 * present at all in a tuple, i.e. when the column was created after the tuple
21 */
22 typedef struct AttrMissing
23{
24 bool am_present; /* true if non-NULL missing value exists */
25 Datum am_value; /* value when attribute is missing */
26 } AttrMissing;
27
28#endif /* TUPDESC_DETAILS_H */
uint64_t Datum
Definition: postgres.h:70
bool am_present
Datum am_value
struct AttrMissing AttrMissing

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