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Enhance location(X) so that it works with indexes and WITHOUT ROWID tables.

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The function might return an offset to the main table or to an index,
depending on whether the column X would be loaded from the main table or
from the index.

FossilOrigin-Name: dd94d6a880dfec4bddd247239b815b84964f804d24841e25f33f1d46a4b5274d
This commit is contained in:
drh
2017-12-29 14:33:54 +00:00
parent 7a8573bafa
commit fe6d20e9f4
7 changed files with 27 additions and 23 deletions
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3
src/btree.c
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@@ -4439,9 +4439,8 @@ i64 sqlite3BtreeIntegerKey(BtCursor *pCur){
i64 sqlite3BtreeLocation(BtCursor *pCur){
assert( cursorHoldsMutex(pCur) );
assert( pCur->eState==CURSOR_VALID );
assert( pCur->curIntKey );
getCellInfo(pCur);
return (i64)pCur->pBt->pageSize*(i64)pCur->pPage->pgno +
return (i64)pCur->pBt->pageSize*((i64)pCur->pPage->pgno - 1) +
(i64)(pCur->info.pPayload - pCur->pPage->aData);
}