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Show tree diagrams of data structures in the debugging output when the 0x100

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bit is set on sqlite3WhereTrace or sqlite3SelectTrace.

FossilOrigin-Name: 92e0b4bd4d75e8b000586e51a07b3e181d9af20b
This commit is contained in:
drh
2014-09-30 13:46:49 +00:00
parent 4fa4a54f7e
commit c90713d3d2
4 changed files with 54 additions and 9 deletions
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35
src/where.c
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@@ -3756,6 +3756,23 @@ static Bitmask codeOneLoopStart(
return pLevel->notReady;
}
#ifdef WHERETRACE_ENABLED
/*
** Print the content of a WhereTerm object
*/
static void whereTermPrint(WhereTerm *pTerm, int iTerm){
char zType[4];
memcpy(zType, "...", 4);
if( pTerm->wtFlags & TERM_VIRTUAL ) zType[0] = 'V';
if( pTerm->eOperator & WO_EQUIV ) zType[1] = 'E';
if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) zType[2] = 'L';
sqlite3DebugPrintf("TERM-%-3d %p %s cursor=%-3d prob=%-3d op=0x%03x\n", iTerm,
pTerm, zType, pTerm->leftCursor, pTerm->truthProb,
pTerm->eOperator);
sqlite3TreeViewExpr(0, pTerm->pExpr, 0);
}
#endif
#ifdef WHERETRACE_ENABLED
/*
** Print a WhereLoop object for debugging purposes
@@ -3798,6 +3815,14 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){
sqlite3DebugPrintf(" f %05x N %d", p->wsFlags, p->nLTerm);
}
sqlite3DebugPrintf(" cost %d,%d,%d\n", p->rSetup, p->rRun, p->nOut);
if( p->nLTerm && (sqlite3WhereTrace & 0x100)!=0 ){
int i;
for(i=0; i<p->nLTerm; i++){
WhereTerm *pTerm = p->aLTerm[i];
if( pTerm==0 ) continue;
whereTermPrint(pTerm, i);
}
}
}
#endif
@@ -6130,6 +6155,16 @@ WhereInfo *sqlite3WhereBegin(
/* Construct the WhereLoop objects */
WHERETRACE(0xffff,("*** Optimizer Start ***\n"));
#if defined(WHERETRACE_ENABLED)
/* Display all terms of the WHERE clause */
if( sqlite3WhereTrace & 0x100 ){
int i;
for(i=0; i<sWLB.pWC->nTerm; i++){
whereTermPrint(&sWLB.pWC->a[i], i);
}
}
#endif
if( nTabList!=1 || whereShortCut(&sWLB)==0 ){
rc = whereLoopAddAll(&sWLB);
if( rc ) goto whereBeginError;