diff options
Diffstat (limited to 'src/include/executor/tuptable.h')
| -rw-r--r-- | src/include/executor/tuptable.h | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/src/include/executor/tuptable.h b/src/include/executor/tuptable.h index a5193683a28..882d377ed51 100644 --- a/src/include/executor/tuptable.h +++ b/src/include/executor/tuptable.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/executor/tuptable.h,v 1.28 2005/03/16 21:38:10 tgl Exp $ + * $PostgreSQL: pgsql/src/include/executor/tuptable.h,v 1.29 2005/10/15 02:49:44 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -37,17 +37,17 @@ * a lower plan node's output TupleTableSlot, or to a function result * constructed in a plan node's per-tuple econtext. It is the responsibility * of the generating plan node to be sure these resources are not released - * for as long as the virtual tuple needs to be valid. We only use virtual + * for as long as the virtual tuple needs to be valid. We only use virtual * tuples in the result slots of plan nodes --- tuples to be copied anywhere * else need to be "materialized" into physical tuples. Note also that a * virtual tuple does not have any "system columns". * * The Datum/isnull arrays of a TupleTableSlot serve double duty. When the - * slot contains a virtual tuple, they are the authoritative data. When the + * slot contains a virtual tuple, they are the authoritative data. When the * slot contains a physical tuple, the arrays contain data extracted from * the tuple. (In this state, any pass-by-reference Datums point into * the physical tuple.) The extracted information is built "lazily", - * ie, only as needed. This serves to avoid repeated extraction of data + * ie, only as needed. This serves to avoid repeated extraction of data * from the physical tuple. * * A TupleTableSlot can also be "empty", holding no valid data. This is @@ -70,7 +70,7 @@ * buffer page.) * * tts_nvalid indicates the number of valid columns in the tts_values/isnull - * arrays. When the slot is holding a "virtual" tuple this must be equal + * arrays. When the slot is holding a "virtual" tuple this must be equal * to the descriptor's natts. When the slot is holding a physical tuple * this is equal to the number of columns we have extracted (we always * extract columns from left to right, so there are no holes). @@ -85,8 +85,8 @@ typedef struct TupleTableSlot { NodeTag type; /* vestigial ... allows IsA tests */ - bool tts_isempty; /* true = slot is empty */ - bool tts_shouldFree; /* should pfree tuple? */ + bool tts_isempty; /* true = slot is empty */ + bool tts_shouldFree; /* should pfree tuple? */ bool tts_shouldFreeDesc; /* should pfree descriptor? */ bool tts_slow; /* saved state for slot_deform_tuple */ HeapTuple tts_tuple; /* physical tuple, or NULL if none */ @@ -137,7 +137,8 @@ extern HeapTuple ExecCopySlotTuple(TupleTableSlot *slot); extern HeapTuple ExecFetchSlotTuple(TupleTableSlot *slot); extern HeapTuple ExecMaterializeSlot(TupleTableSlot *slot); extern TupleTableSlot *ExecCopySlot(TupleTableSlot *dstslot, - TupleTableSlot *srcslot); + TupleTableSlot *srcslot); + /* in access/common/heaptuple.c */ extern Datum slot_getattr(TupleTableSlot *slot, int attnum, bool *isnull); extern void slot_getallattrs(TupleTableSlot *slot); |