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Add VDBE comments to the beginning and end of skip-scan loops.

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FossilOrigin-Name: 0c85d93b52311dee7980d977be6ed0dc70b060c1
This commit is contained in:
drh
2013-11-13 17:24:38 +00:00
parent 2e5ef4ed77
commit e084f40b37
3 changed files with 9 additions and 7 deletions
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2
src/where.c
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@@ -2505,6 +2505,7 @@ static int codeAllEqualityTerms(
if( nSkip ){
int iIdxCur = pLevel->iIdxCur;
sqlite3VdbeAddOp1(v, (bRev?OP_Last:OP_Rewind), iIdxCur);
VdbeComment((v, "begin skip-scan on %s", pIdx->zName));
j = sqlite3VdbeAddOp0(v, OP_Goto);
pLevel->addrSkip = sqlite3VdbeAddOp4Int(v, (bRev?OP_SeekLt:OP_SeekGt),
iIdxCur, 0, regBase, nSkip);
@@ -5789,6 +5790,7 @@ void sqlite3WhereEnd(WhereInfo *pWInfo){
sqlite3VdbeResolveLabel(v, pLevel->addrBrk);
if( pLevel->addrSkip ){
sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrSkip);
VdbeComment((v, "next skip-scan on %s", pLoop->u.btree.pIndex->zName));
sqlite3VdbeJumpHere(v, pLevel->addrSkip);
sqlite3VdbeJumpHere(v, pLevel->addrSkip-2);
}