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Remove the unused P5 flag from the OP_Rewind opcode.

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FossilOrigin-Name: c2edbf3b8c643edcd5823eb907fd7531cf5be8a8b6a014fa1b123eb0ea3231cf
This commit is contained in:
drh
2019-03-29 15:21:22 +00:00
parent 3580843595
commit 038ebf6875
5 changed files with 12 additions and 38 deletions
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10
src/vdbe.c
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@@ -5114,7 +5114,7 @@ case OP_Sort: { /* jump */
p->aCounter[SQLITE_STMTSTATUS_SORT]++;
/* Fall through into OP_Rewind */
}
/* Opcode: Rewind P1 P2 * * P5
/* Opcode: Rewind P1 P2 * * *
**
** The next use of the Rowid or Column or Next instruction for P1
** will refer to the first entry in the database table or index.
@@ -5122,10 +5122,6 @@ case OP_Sort: { /* jump */
** If the table or index is not empty, fall through to the following
** instruction.
**
** If P5 is non-zero and the table is not empty, then the "skip-next"
** flag is set on the cursor so that the next OP_Next instruction
** executed on it is a no-op.
**
** This opcode leaves the cursor configured to move in forward order,
** from the beginning toward the end. In other words, the cursor is
** configured to use Next, not Prev.
@@ -5136,6 +5132,7 @@ case OP_Rewind: { /* jump */
int res;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p5==0 );
pC = p->apCsr[pOp->p1];
assert( pC!=0 );
assert( isSorter(pC)==(pOp->opcode==OP_SorterSort) );
@@ -5150,9 +5147,6 @@ case OP_Rewind: { /* jump */
pCrsr = pC->uc.pCursor;
assert( pCrsr );
rc = sqlite3BtreeFirst(pCrsr, &res);
#ifndef SQLITE_OMIT_WINDOWFUNC
if( pOp->p5 ) sqlite3BtreeSkipNext(pCrsr);
#endif
pC->deferredMoveto = 0;
pC->cacheStatus = CACHE_STALE;
}