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pgsql/include/server/access/tupconvert.h
54 строки
2 KB
AoAnima
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13 июл 2026, 17:47
13 июл 2026, 17:47
f1a670a
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/*------------------------------------------------------------------------- * * tupconvert.h * Tuple conversion support. * * * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/access/tupconvert.h * *------------------------------------------------------------------------- */ #ifndef TUPCONVERT_H #define TUPCONVERT_H #include "access/attmap.h" #include "access/htup.h" #include "access/tupdesc.h" #include "executor/tuptable.h" #include "nodes/bitmapset.h" typedef struct TupleConversionMap { TupleDesc indesc; /* tupdesc for source rowtype */ TupleDesc outdesc; /* tupdesc for result rowtype */ AttrMap *attrMap; /* indexes of input fields, or 0 for null */ Datum *invalues; /* workspace for deconstructing source */ bool *inisnull; Datum *outvalues; /* workspace for constructing result */ bool *outisnull; } TupleConversionMap; extern TupleConversionMap *convert_tuples_by_position(TupleDesc indesc, TupleDesc outdesc, const char *msg); extern TupleConversionMap *convert_tuples_by_name(TupleDesc indesc, TupleDesc outdesc); extern TupleConversionMap *convert_tuples_by_name_attrmap(TupleDesc indesc, TupleDesc outdesc, AttrMap *attrMap); extern HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map); extern TupleTableSlot *execute_attr_map_slot(AttrMap *attrMap, TupleTableSlot *in_slot, TupleTableSlot *out_slot); extern Bitmapset *execute_attr_map_cols(AttrMap *attrMap, Bitmapset *in_cols); extern void free_conversion_map(TupleConversionMap *map); #endif /* TUPCONVERT_H */