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Overview
| Comment: | When an index is used by all branches of the WHERE_MULTI_OR optimization and becomes a covering index, make sure the index has been created prior to NULLing it in the OP_NullRow opcode of a LEFT JOIN. See forum post 0575376e07. The covering-index for WHERE_MULTI_OR optimization was added by [62678be3df35cdcb]. Test cases are in the orindex01.test module of TH3. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
787c76a865dc51dbca4f30432d647831 |
| User & Date: | drh 2021-06-22 23:24:58 |
Context
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2021-06-23
| ||
| 11:12 | Fix a problem handling ORDER BY terms of the form "ORDER BY likely(<integer>)" within window frames. (check-in: 710f75b9 user: dan tags: trunk) | |
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2021-06-22
| ||
| 23:24 | When an index is used by all branches of the WHERE_MULTI_OR optimization and becomes a covering index, make sure the index has been created prior to NULLing it in the OP_NullRow opcode of a LEFT JOIN. See forum post 0575376e07. The covering-index for WHERE_MULTI_OR optimization was added by [62678be3df35cdcb]. Test cases are in the orindex01.test module of TH3. (check-in: 787c76a8 user: drh tags: trunk) | |
| 18:32 | Add the sqlite3_changes64() and sqlite3_total_changes64() API functions. (check-in: 48fdec22 user: dan tags: trunk) | |
Changes
Changes to src/where.c.
| ︙ | ︙ | |||
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if( (ws & WHERE_IDX_ONLY)==0 ){
assert( pLevel->iTabCur==pTabList->a[pLevel->iFrom].iCursor );
sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iTabCur);
}
if( (ws & WHERE_INDEXED)
|| ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx)
){
sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur);
}
if( pLevel->op==OP_Return ){
sqlite3VdbeAddOp2(v, OP_Gosub, pLevel->p1, pLevel->addrFirst);
}else{
sqlite3VdbeGoto(v, pLevel->addrFirst);
}
| > > > > > > | 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 |
if( (ws & WHERE_IDX_ONLY)==0 ){
assert( pLevel->iTabCur==pTabList->a[pLevel->iFrom].iCursor );
sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iTabCur);
}
if( (ws & WHERE_INDEXED)
|| ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx)
){
if( ws & WHERE_MULTI_OR ){
Index *pIx = pLevel->u.pCovidx;
int iDb = sqlite3SchemaToIndex(db, pIx->pSchema);
sqlite3VdbeAddOp3(v, OP_ReopenIdx, pLevel->iIdxCur, pIx->tnum, iDb);
sqlite3VdbeSetP4KeyInfo(pParse, pIx);
}
sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur);
}
if( pLevel->op==OP_Return ){
sqlite3VdbeAddOp2(v, OP_Gosub, pLevel->p1, pLevel->addrFirst);
}else{
sqlite3VdbeGoto(v, pLevel->addrFirst);
}
|
| ︙ | ︙ |