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Overview
| Comment: | Fix another instance of an incorrect value for KeyInfo.nXField on a sorting index. Ticket [f97c4637102a3ae72b79]. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 0077f64510f9b9ce90032df2696cb242 |
| User & Date: | drh 2015-01-20 03:04:29 |
Context
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2015-01-21
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| 06:36 | Merge latest trunk changes with this branch. check-in: b3348b1e user: dan tags: fts5 | |
| 00:48 | Enhancements to entropy generation for the Win32 VFS. check-in: 26190b3c user: mistachkin tags: trunk | |
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2015-01-20
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| 03:04 | Fix another instance of an incorrect value for KeyInfo.nXField on a sorting index. Ticket [f97c4637102a3ae72b79]. check-in: 0077f645 user: drh tags: trunk | |
| 02:50 | Fix another instance of an incorrect value for KeyInfo.nXField on a sorting index. More changes for ticket [f97c4637102a3ae72b79]. check-in: dc711db4 user: drh tags: branch-3.8.8 | |
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2015-01-19
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| 21:36 | Ensure that the KeyInfo.nXField value for ephemeral tables used to implement ORDER BY or GROUP BY clauses is set correctly, so that the sqlite3VdbeFindCompare() routine can choose the correct comparison function. Add assert() statements to the high-speed comparison functions to detect cases where they are inappropriately chosen. Fix for ticket [f97c4637102a3ae72b7911]. check-in: f7201bb0 user: drh tags: trunk | |
Changes
Changes to src/select.c.
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sqlite3VdbeAddOp3(v, OP_Compare, regPrevKey, regBase, pSort->nOBSat);
pOp = sqlite3VdbeGetOp(v, pSort->addrSortIndex);
if( pParse->db->mallocFailed ) return;
pOp->p2 = nKey + nData;
pKI = pOp->p4.pKeyInfo;
memset(pKI->aSortOrder, 0, pKI->nField); /* Makes OP_Jump below testable */
sqlite3VdbeChangeP4(v, -1, (char*)pKI, P4_KEYINFO);
pOp->p4.pKeyInfo = keyInfoFromExprList(pParse, pSort->pOrderBy, nOBSat, 1);
addrJmp = sqlite3VdbeCurrentAddr(v);
sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v);
pSort->labelBkOut = sqlite3VdbeMakeLabel(v);
pSort->regReturn = ++pParse->nMem;
sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut);
sqlite3VdbeAddOp1(v, OP_ResetSorter, pSort->iECursor);
sqlite3VdbeJumpHere(v, addrFirst);
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sqlite3VdbeAddOp3(v, OP_Compare, regPrevKey, regBase, pSort->nOBSat);
pOp = sqlite3VdbeGetOp(v, pSort->addrSortIndex);
if( pParse->db->mallocFailed ) return;
pOp->p2 = nKey + nData;
pKI = pOp->p4.pKeyInfo;
memset(pKI->aSortOrder, 0, pKI->nField); /* Makes OP_Jump below testable */
sqlite3VdbeChangeP4(v, -1, (char*)pKI, P4_KEYINFO);
testcase( pKI->nXField>2 );
pOp->p4.pKeyInfo = keyInfoFromExprList(pParse, pSort->pOrderBy, nOBSat,
pKI->nXField-1);
addrJmp = sqlite3VdbeCurrentAddr(v);
sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v);
pSort->labelBkOut = sqlite3VdbeMakeLabel(v);
pSort->regReturn = ++pParse->nMem;
sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut);
sqlite3VdbeAddOp1(v, OP_ResetSorter, pSort->iECursor);
sqlite3VdbeJumpHere(v, addrFirst);
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