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Avoid a few unnecessary calls to sqlite3BtreeMovetoUnpacked().

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FossilOrigin-Name: eac0e827a61cfec4dd9b6d407ff398e9fda3510b
This commit is contained in:
drh
2016-11-10 20:42:08 +00:00
parent c6c9e158c5
commit 7a1c28defe
3 changed files with 12 additions and 10 deletions
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8
src/btree.c
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@@ -8013,9 +8013,11 @@ int sqlite3BtreeInsert(
/* If the cursor is currently on the last row and we are appending a
** new row onto the end, set the "loc" to avoid an unnecessary
** btreeMoveto() call */
if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey>0
&& pCur->info.nKey==pX->nKey-1 ){
loc = -1;
if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey ){
loc = 0;
}else if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey>0
&& pCur->info.nKey==pX->nKey-1 ){
loc = -1;
}else if( loc==0 ){
rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, appendBias, &loc);
if( rc ) return rc;