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postgres/src/include/access/tupdesc_details.h
Andres Freund 774a975c9a Make naming of tupdesc related structs more consistent with the rest of PG.
We usually don't change the name of structs between the struct name
itself and the name of the typedef. Additionally, structs that are
usually used via a typedef that hides being a pointer, are commonly
suffixed Data.  Change tupdesc code to follow those convention.

This is triggered by a future patch that intends to forward declare
TupleDescData in another header - keeping with the naming scheme makes
that easier to understand.

Author: Andres Freund
Discussion: https://postgr.es/m/20190114000701.y4ttcb74jpskkcfb@alap3.anarazel.de
2019-01-14 16:25:50 -08:00

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C

/*-------------------------------------------------------------------------
*
* tupdesc_details.h
* POSTGRES tuple descriptor definitions we can't include everywhere
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/tupdesc_details.h
*
*-------------------------------------------------------------------------
*/
#ifndef TUPDESC_DETAILS_H
#define TUPDESC_DETAILS_H
/*
* Structure used to represent value to be used when the attribute is not
* present at all in a tuple, i.e. when the column was created after the tuple
*/
typedef struct AttrMissing
{
bool am_present; /* true if non-NULL missing value exists */
Datum am_value; /* value when attribute is missing */
} AttrMissing;
#endif /* TUPDESC_DETAILS_H */