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Further adjustment of comment about qsort_tuple.

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This commit is contained in:
Tom Lane 2012-04-07 17:48:40 -04:00
parent a25ef7a5f6
commit 95b9c333b2
1 changed files with 6 additions and 3 deletions
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9
src/backend/utils/sort/tuplesort.c
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@ -346,7 +346,7 @@ struct Tuplesortstate
/*
* This variable is shared by the single-key MinimalTuple case and the
* Datum case. Otherwise it's NULL.
* Datum case (which both use qsort_ssup()). Otherwise it's NULL.
*/
SortSupport onlyKey;
@ -500,8 +500,11 @@ static void reversedirection_datum(Tuplesortstate *state);
static void free_sort_tuple(Tuplesortstate *state, SortTuple *stup);
/*
* Special versions of qsort just for SortTuple objects. We have one for the
* single-key case (qsort_ssup) and one for multi-key cases (qsort_tuple).
* Special versions of qsort just for SortTuple objects. qsort_tuple() sorts
* any variant of SortTuples, using the appropriate comparetup function.
* qsort_ssup() is specialized for the case where the comparetup function
* reduces to ApplySortComparator(), that is single-key MinimalTuple sorts
* and Datum sorts.
*/
#include "qsort_tuple.c"