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Backpatch introduction of TupleDescAttr(tupdesc, i).

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2cd70845240 / c6293249d change the way individual attributes in a
TupleDesc are stored / accessed.  To reduce the effort of making
extensions compatible with postgresql 11, and to ease future
backpatching, backpatch introduction of TupleDescAttr() to all
releases.  Do not backpatch change in storage, as that'd be a breaking
change for existing and working extensions.

Author: Andres Freund
Discussion: https://postgr.es/m/20170820181723.tdswdinzptbcwhrr@alap3.anarazel.de
Backpatch: 9.2-
This commit is contained in:
Andres Freund 2017-08-22 07:46:05 -07:00
parent ece4bd9013
commit 5b286cae3c
1 changed files with 3 additions and 0 deletions
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src/include/access/tupdesc.h
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@ -81,6 +81,9 @@ typedef struct tupleDesc
} *TupleDesc;
/* Accessor for the i'th attribute of tupdesc. */
#define TupleDescAttr(tupdesc, i) ((tupdesc)->attrs[(i)])
extern TupleDesc CreateTemplateTupleDesc(int natts, bool hasoid);
extern TupleDesc CreateTupleDesc(int natts, bool hasoid,