#ifndef _PGSQL_COMPAT_H#define _PGSQL_COMPAT_H 1#include"access/tupdesc.h"/* TupleDescAttr was backported into 9.6.5 but we support any 9.6.X */#ifndef TupleDescAttr#define TupleDescAttr(tupdesc, i) ((tupdesc)->attrs[(i)])#endif#endif/* _PGSQL_COMPAT_H */