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Instead of a temporary b-tree, use a linked-list and merge-sort to sort records in main memory in vdbesort.c.

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FossilOrigin-Name: 7769fb988d9be0f2d8129aaac19620ac88f9b4a6
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dan
2011-09-02 10:31:11 +00:00
parent 1c9d835d49
commit 5134d1357e
12 changed files with 423 additions and 202 deletions
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src/sqliteInt.h
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@@ -1550,6 +1550,7 @@ struct AggInfo {
u8 useSortingIdx; /* In direct mode, reference the sorting index rather
** than the source table */
int sortingIdx; /* Cursor number of the sorting index */
int sortingIdxPTab; /* Cursor number of pseudo-table */
ExprList *pGroupBy; /* The group by clause */
int nSortingColumn; /* Number of columns in the sorting index */
struct AggInfo_col { /* For each column used in source tables */