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Overview
| Comment: | Do not use the insert-overwrite optimization if the cell might overwrite the page header. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | branch-3.29 |
| Files: | files | file ages | folders |
| SHA3-256: |
9991626b25ad5cc782d8de0b5b4522bc |
| User & Date: | drh 2019-07-22 23:30:44 |
Context
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2019-07-22
| ||
| 23:30 | Do not use the insert-overwrite optimization if the cell might overwrite the page header. Leaf check-in: 9991626b user: drh tags: branch-3.29 | |
| 23:24 | Do not use the insert-overwrite optimization if the cell might overwrite the page header. check-in: f60a8306 user: drh tags: trunk | |
|
2019-07-19
| ||
| 01:25 | Fix a new problem in the BETWEEN operator when applied to a window function. The problem was introduced yesterday by check-in [7ef7b23cbb1b9ace]. This cherry-pick also needed to remove an assert from sqliteExprDelete(). check-in: ce6bf395 user: drh tags: branch-3.29 | |
Changes
Changes to src/btree.c.
8725 8726 8727 8728 8729 8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 |
** doing that is no faster then skipping this optimization and just
** calling dropCell() and insertCell().
**
** This optimization cannot be used on an autovacuum database if the
** new entry uses overflow pages, as the insertCell() call below is
** necessary to add the PTRMAP_OVERFLOW1 pointer-map entry. */
assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */
if( oldCell+szNew > pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT;
memcpy(oldCell, newCell, szNew);
return SQLITE_OK;
}
dropCell(pPage, idx, info.nSize, &rc);
if( rc ) goto end_insert;
}else if( loc<0 && pPage->nCell>0 ){
assert( pPage->leaf );
|
> > > | > > |
8725 8726 8727 8728 8729 8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 8740 8741 8742 8743 8744 |
** doing that is no faster then skipping this optimization and just
** calling dropCell() and insertCell().
**
** This optimization cannot be used on an autovacuum database if the
** new entry uses overflow pages, as the insertCell() call below is
** necessary to add the PTRMAP_OVERFLOW1 pointer-map entry. */
assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */
if( oldCell < pPage->aData+pPage->hdrOffset+10 ){
return SQLITE_CORRUPT_BKPT;
}
if( oldCell+szNew > pPage->aDataEnd ){
return SQLITE_CORRUPT_BKPT;
}
memcpy(oldCell, newCell, szNew);
return SQLITE_OK;
}
dropCell(pPage, idx, info.nSize, &rc);
if( rc ) goto end_insert;
}else if( loc<0 && pPage->nCell>0 ){
assert( pPage->leaf );
|