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Reduce the CPU used by CREATE INDEX statements by taking better advantage of the fact that keys are inserted in sorted order.

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FossilOrigin-Name: 592cdc5d7254be7032aa9c0b03405a74ca060b51
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dan
2015-04-01 16:18:00 +00:00
parent 7004f3f6a3
commit b18e60b3e4
4 changed files with 12 additions and 10 deletions
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3
src/vdbe.c
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@@ -4480,7 +4480,7 @@ case OP_NullRow: {
break;
}
/* Opcode: Last P1 P2 * * *
/* Opcode: Last P1 P2 P3 * *
**
** The next use of the Rowid or Column or Prev instruction for P1
** will refer to the last entry in the database table or index.
@@ -4507,6 +4507,7 @@ case OP_Last: { /* jump */
pC->nullRow = (u8)res;
pC->deferredMoveto = 0;
pC->cacheStatus = CACHE_STALE;
pC->seekResult = pOp->p3;
#ifdef SQLITE_DEBUG
pC->seekOp = OP_Last;
#endif