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Overview
| Comment: | Merge the btreeNext() assertion bug fix from trunk. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | in-scan-vs-index |
| Files: | files | file ages | folders |
| SHA3-256: | 11bd66e09035039fbfc4c5631196962d |
| User & Date: | drh 2018-06-08 19:54:07 |
Context
|
2018-06-08
| ||
| 21:21 | Only choose to scan an IN operator rather than use an index if we have real STAT1 data to suggest it is advantageous. Closed-Leaf check-in: 30e87466 user: drh tags: in-scan-vs-index | |
| 19:54 | Merge the btreeNext() assertion bug fix from trunk. check-in: 11bd66e0 user: drh tags: in-scan-vs-index | |
| 19:13 | Fix an assert() that can be false for a corrupt database and a strange query that uses a recursive SQL function to delete content from a corrupt database file while it is being queried. check-in: 99057383 user: drh tags: trunk | |
| 18:22 | Consider doing a partial table scan to fulfill an IN operator rather than using an index. Try to pick the plan with the lowest cost. check-in: 1fa40a78 user: drh tags: in-scan-vs-index | |
Changes
Changes to src/btree.c.
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}
pCur->skipNext = 0;
}
}
pPage = pCur->pPage;
idx = ++pCur->ix;
assert( pPage->isInit );
/* If the database file is corrupt, it is possible for the value of idx
** to be invalid here. This can only occur if a second cursor modifies
** the page while cursor pCur is holding a reference to it. Which can
** only happen if the database is corrupt in such a way as to link the
** page into more than one b-tree structure. */
testcase( idx>pPage->nCell );
|
| > > > > > > > > > |
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}
pCur->skipNext = 0;
}
}
pPage = pCur->pPage;
idx = ++pCur->ix;
if( !pPage->isInit ){
/* The only known way for this to happen is for there to be a
** recursive SQL function that does a DELETE operation as part of a
** SELECT which deletes content out from under an active cursor
** in a corrupt database file where the table being DELETE-ed from
** has pages in common with the table being queried. See TH3
** module cov1/btree78.test testcase 220 (2018-06-08) for an
** example. */
return SQLITE_CORRUPT_BKPT;
}
/* If the database file is corrupt, it is possible for the value of idx
** to be invalid here. This can only occur if a second cursor modifies
** the page while cursor pCur is holding a reference to it. Which can
** only happen if the database is corrupt in such a way as to link the
** page into more than one b-tree structure. */
testcase( idx>pPage->nCell );
|