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New enhancements to .wheretrace. The 0x20000 flag shows the WHERE clause

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before and after coding each loop.  The 0x800 flag shows status at the start
and at the end of each loop.  An extra "C" tag is shown on coded terms.

FossilOrigin-Name: 59cc46e5a6d8dbb030f27716ad5446ecccf81cf0cfff95338b9133777f2059e7
This commit is contained in:
drh
2019-12-28 14:07:22 +00:00
parent cacdf20771
commit 118efd1626
4 changed files with 48 additions and 15 deletions
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16
src/where.c
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@@ -1735,12 +1735,13 @@ void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm){
if( pTerm==0 ){
sqlite3DebugPrintf("TERM-%-3d NULL\n", iTerm);
}else{
char zType[4];
char zType[8];
char zLeft[50];
memcpy(zType, "...", 4);
memcpy(zType, "....", 5);
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';
if( pTerm->wtFlags & TERM_CODED ) zType[3] = 'C';
if( pTerm->eOperator & WO_SINGLE ){
sqlite3_snprintf(sizeof(zLeft),zLeft,"left={%d:%d}",
pTerm->leftCursor, pTerm->u.leftColumn);
@@ -1751,12 +1752,13 @@ void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm){
sqlite3_snprintf(sizeof(zLeft),zLeft,"left=%d", pTerm->leftCursor);
}
sqlite3DebugPrintf(
"TERM-%-3d %p %s %-12s prob=%-3d op=%03x wtFlags=%04x",
iTerm, pTerm, zType, zLeft, pTerm->truthProb,
pTerm->eOperator, pTerm->wtFlags);
"TERM-%-3d %p %s %-12s op=%03x wtFlags=%04x",
iTerm, pTerm, zType, zLeft, pTerm->eOperator, pTerm->wtFlags);
/* The 0x10000 .wheretrace flag causes extra information to be
** shown about each Term */
if( sqlite3WhereTrace & 0x10000 ){
sqlite3DebugPrintf(" prereq=%llx,%llx",
(u64)pTerm->prereqAll, (u64)pTerm->prereqRight);
sqlite3DebugPrintf(" prob=%-3d prereq=%llx,%llx",
pTerm->truthProb, (u64)pTerm->prereqAll, (u64)pTerm->prereqRight);
}
if( pTerm->iField ){
sqlite3DebugPrintf(" iField=%d", pTerm->iField);