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Remove unused code from tuplesort.

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copytup_index() is unused, as tuplesort_putindextuplevalues() doesn't
use COPYTUP(). Replace function body with an elog(ERROR), as already
done e.g. for copytup_datum().

Author: Andres Freund
Discussion: https://postgr.es/m/20191013144153.ooxrfglvnaocsrx2@alap3.anarazel.de
This commit is contained in:
Andres Freund 2019-11-13 15:57:01 -08:00
parent 4a252996d5
commit 7d962eaf50
1 changed files with 2 additions and 61 deletions
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63
src/backend/utils/sort/tuplesort.c
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@ -4141,67 +4141,8 @@ comparetup_index_hash(const SortTuple *a, const SortTuple *b,
static void
copytup_index(Tuplesortstate *state, SortTuple *stup, void *tup)
{
IndexTuple tuple = (IndexTuple) tup;
unsigned int tuplen = IndexTupleSize(tuple);
IndexTuple newtuple;
Datum original;
/* copy the tuple into sort storage */
newtuple = (IndexTuple) MemoryContextAlloc(state->tuplecontext, tuplen);
memcpy(newtuple, tuple, tuplen);
USEMEM(state, GetMemoryChunkSpace(newtuple));
stup->tuple = (void *) newtuple;
/* set up first-column key value */
original = index_getattr(newtuple,
1,
RelationGetDescr(state->indexRel),
&stup->isnull1);
if (!state->sortKeys->abbrev_converter || stup->isnull1)
{
/*
* Store ordinary Datum representation, or NULL value. If there is a
* converter it won't expect NULL values, and cost model is not
* required to account for NULL, so in that case we avoid calling
* converter and just set datum1 to zeroed representation (to be
* consistent, and to support cheap inequality tests for NULL
* abbreviated keys).
*/
stup->datum1 = original;
}
else if (!consider_abort_common(state))
{
/* Store abbreviated key representation */
stup->datum1 = state->sortKeys->abbrev_converter(original,
state->sortKeys);
}
else
{
/* Abort abbreviation */
int i;
stup->datum1 = original;
/*
* Set state to be consistent with never trying abbreviation.
*
* Alter datum1 representation in already-copied tuples, so as to
* ensure a consistent representation (current tuple was just
* handled). It does not matter if some dumped tuples are already
* sorted on tape, since serialized tuples lack abbreviated keys
* (TSS_BUILDRUNS state prevents control reaching here in any case).
*/
for (i = 0; i < state->memtupcount; i++)
{
SortTuple *mtup = &state->memtuples[i];
tuple = (IndexTuple) mtup->tuple;
mtup->datum1 = index_getattr(tuple,
1,
RelationGetDescr(state->indexRel),
&mtup->isnull1);
}
}
/* Not currently needed */
elog(ERROR, "copytup_index() should not be called");
}
static void