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Improvements to the WHERETRACE debugging logic.

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FossilOrigin-Name: ec1e942f08548695ff02645b3f3cd6bb2516bc9a
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drh
2014-10-21 16:01:40 +00:00
parent c8bbce1e6a
commit 1b131b7a7a
3 changed files with 12 additions and 8 deletions
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12
manifest
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@@ -1,5 +1,5 @@
C If\sa\sskip-scan\sis\sa\sproper\ssubset\sof\ssome\sother\sscan,\sthen\sadjust\sthe\ncost\sof\sthe\sskip-scan\supward\sso\sthat\sit\sis\smore\scostly\sthan\sthe\sother\sscan.\nSuch\sa\scost\simbalance\scan\sarise\sunder\sSTAT4\sbecause\sof\sdifficulties\sin\sgetting\nan\saccurate\sestimate\sfor\sskip-scans.
D 2014-10-21T01:05:09.795
C Improvements\sto\sthe\sWHERETRACE\sdebugging\slogic.
D 2014-10-21T16:01:40.774
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -302,7 +302,7 @@ F src/vtab.c cb0c194303fea276b48d7d4b6d970b5a96bde8de
F src/wal.c 10e7de7ce90865a68153f001a61f1d985cd17983
F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
F src/walker.c c253b95b4ee44b21c406e2a1052636c31ea27804
F src/where.c 2d1ff51eede0e4dcc87569dc8e3161237295162a
F src/where.c 45cb63cb1422d7e5a9229c297e978d294ae51e16
F src/whereInt.h 4b459cdbfc9b01f5f27673a35f9967e4dea917e8
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
@@ -1205,7 +1205,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
P 19fe4a0a475bd94f491031aea7a183f7c0515cf3
R 7ae877aeccb485915279368cd2f54415
P f4b22a2620a5dc48949048c2ecbd226755d4b2c3
R 59b7c6284af5e31186eaa6edb85f9e59
U drh
Z dece11d7f7de853e09f0182395012c8f
Z 3eaff9a0b8f4f97b5dd119bc1e1acc8b

2
manifest.uuid
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@@ -1 +1 @@
f4b22a2620a5dc48949048c2ecbd226755d4b2c3
ec1e942f08548695ff02645b3f3cd6bb2516bc9a

6
src/where.c
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@@ -3995,11 +3995,15 @@ static void whereLoopAdjustCost(const WhereLoop *p, WhereLoop *pTemplate){
if( whereLoopCheaperProperSubset(p, pTemplate) ){
/* Adjust pTemplate cost downward so that it is cheaper than its
** subset p */
WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n",
pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut-1));
pTemplate->rRun = p->rRun;
pTemplate->nOut = p->nOut - 1;
}else if( whereLoopCheaperProperSubset(pTemplate, p) ){
/* Adjust pTemplate cost upward so that it is costlier than p since
** pTemplate is a proper subset of p */
WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n",
pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut+1));
pTemplate->rRun = p->rRun;
pTemplate->nOut = p->nOut + 1;
}
@@ -5751,7 +5755,7 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){
}
#ifdef WHERETRACE_ENABLED /* >=2 */
if( sqlite3WhereTrace>=2 ){
if( sqlite3WhereTrace & 0x02 ){
sqlite3DebugPrintf("---- after round %d ----\n", iLoop);
for(ii=0, pTo=aTo; ii<nTo; ii++, pTo++){
sqlite3DebugPrintf(" %s cost=%-3d nrow=%-3d order=%c",