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Overview
| Comment: | Avoid a few unnecessary calls to sqlite3BtreeMovetoUnpacked(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | unpacked-IdxInsert |
| Files: | files | file ages | folders |
| SHA1: |
eac0e827a61cfec4dd9b6d407ff398e9 |
| User & Date: | drh 2016-11-10 20:42:08 |
Context
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2016-11-11
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| 17:52 | Merge enhancements and bug-fixes from trunk. check-in: 5515b827 user: drh tags: unpacked-IdxInsert | |
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2016-11-10
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| 21:19 | Break up the sqlite3BtreeMovetoUnpacked() routine into an eponymous routine and sqlite3BtreeMovetoIntkey(). Each routine specializes in a single kind of btree. Leaf check-in: 9a64a4f2 user: drh tags: split-moveto | |
| 20:42 | Avoid a few unnecessary calls to sqlite3BtreeMovetoUnpacked(). check-in: eac0e827 user: drh tags: unpacked-IdxInsert | |
| 17:01 | When doing a REPLACE on a WITHOUT ROWID table with no secondary indexes, bypass the OP_NoConflict/OP_Delete sequence and directly overwrite any preexisting row, for a performance increase. check-in: f7041cbb user: drh tags: unpacked-IdxInsert | |
Changes
Changes to src/btree.c.
8009 8009 /* If this is an insert into a table b-tree, invalidate any incrblob 8010 8010 ** cursors open on the row being replaced */ 8011 8011 invalidateIncrblobCursors(p, pX->nKey, 0); 8012 8012 8013 8013 /* If the cursor is currently on the last row and we are appending a 8014 8014 ** new row onto the end, set the "loc" to avoid an unnecessary 8015 8015 ** btreeMoveto() call */ 8016 - if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey>0 8017 - && pCur->info.nKey==pX->nKey-1 ){ 8018 - loc = -1; 8016 + if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey ){ 8017 + loc = 0; 8018 + }else if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey>0 8019 + && pCur->info.nKey==pX->nKey-1 ){ 8020 + loc = -1; 8019 8021 }else if( loc==0 ){ 8020 8022 rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, appendBias, &loc); 8021 8023 if( rc ) return rc; 8022 8024 } 8023 8025 }else if( loc==0 ){ 8024 8026 if( pX->nMem ){ 8025 8027 UnpackedRecord r;