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Avoid a test for CURTYPE_BTREE in sqlite3VdbeCursorMoveto() in order to reduce

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the size and improve the performance of OP_Column.

FossilOrigin-Name: f078deb25149b7b1881b7f3374b343d0677e82336d8fdd7f1cdd06d926b5dd57
This commit is contained in:
drh
2017-08-16 19:20:20 +00:00
parent 1f613c4df3
commit fe0cf7a18c
8 changed files with 56 additions and 38 deletions
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23
src/vdbeaux.c
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@@ -3139,19 +3139,18 @@ int sqlite3VdbeCursorRestore(VdbeCursor *p){
*/
int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){
VdbeCursor *p = *pp;
if( p->eCurType==CURTYPE_BTREE ){
if( p->deferredMoveto ){
int iMap;
if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){
*pp = p->pAltCursor;
*piCol = iMap - 1;
return SQLITE_OK;
}
return handleDeferredMoveto(p);
}
if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){
return handleMovedCursor(p);
assert( p->eCurType==CURTYPE_BTREE || p->eCurType==CURTYPE_PSEUDO );
if( p->deferredMoveto ){
int iMap;
if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){
*pp = p->pAltCursor;
*piCol = iMap - 1;
return SQLITE_OK;
}
return handleDeferredMoveto(p);
}
if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){
return handleMovedCursor(p);
}
return SQLITE_OK;
}