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Import the "PRAGMA vdbe_eqp" enhancement and the enhanced EXPLAIN formatting

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the shell from trunk.  Fix a bug in skip-scan and add a test case to prevent
a regression.

FossilOrigin-Name: f668616a29686f3ce532731c534b168e536adbb5
This commit is contained in:
drh
2013-11-13 19:01:41 +00:00
parent e084f40b37 a98bf365fe
commit d24474475e
13 changed files with 198 additions and 74 deletions
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6
src/where.c
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@@ -2650,7 +2650,10 @@ static void explainOneScan(
int iFrom, /* Value for "from" column of output */
u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */
){
if( pParse->explain==2 ){
#ifndef SQLITE_DEBUG
if( pParse->explain==2 )
#endif
{
struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom];
Vdbe *v = pParse->pVdbe; /* VM being constructed */
sqlite3 *db = pParse->db; /* Database handle */
@@ -3852,6 +3855,7 @@ static void whereLoopOutputAdjust(WhereClause *pWC, WhereLoop *pLoop){
if( (pTerm->prereqAll & notAllowed)!=0 ) continue;
for(j=pLoop->nLTerm-1; j>=0; j--){
pX = pLoop->aLTerm[j];
if( pX==0 ) continue;
if( pX==pTerm ) break;
if( pX->iParent>=0 && (&pWC->a[pX->iParent])==pTerm ) break;
}