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Overview
| Comment: | The ".selecttrace 4" command now shows only a single parse tree after name resolution. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 5682146e8a4ebb4edc1e1b53fbf3daf7 |
| User & Date: | drh 2018-04-23 17:18:03 |
Context
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2018-04-23
| ||
| 17:43 | The ".selecttrace 0x2000" command causes just the top-level parse tree to be displayed, after all transformations, and showing the EQP iSelectId at each level. check-in: ca34c2dd user: drh tags: trunk | |
| 17:18 | The ".selecttrace 4" command now shows only a single parse tree after name resolution. check-in: 5682146e user: drh tags: trunk | |
| 17:09 | Do not restore the iSelectId value until after the last SELECTTRACE when debugging Select processing. check-in: 8088d8ca user: drh tags: trunk | |
Changes
Changes to src/select.c.
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if( pNew==0 ){
p->pPrior = pPrior;
}else{
pNew->pPrior = pPrior;
if( pPrior ) pPrior->pNext = pNew;
pNew->pNext = p;
p->pPrior = pNew;
SELECTTRACE(2,pParse,p,
("compound-subquery flattener creates %s.%p as peer\n",
pNew->zSelName, pNew));
}
if( db->mallocFailed ) return 1;
}
/* Begin flattening the iFrom-th entry of the FROM clause
** in the outer query.
*/
................................................................................
pTabList = p->pSrc;
if( pParse->nErr || db->mallocFailed ){
goto select_end;
}
assert( p->pEList!=0 );
isAgg = (p->selFlags & SF_Aggregate)!=0;
#if SELECTTRACE_ENABLED
if( sqlite3SelectTrace & 0x100 ){
SELECTTRACE(0x100,pParse,p, ("after name resolution:\n"));
sqlite3TreeViewSelect(0, p, 0);
}
#endif
/* Get a pointer the VDBE under construction, allocating a new VDBE if one
** does not already exist */
v = sqlite3GetVdbe(pParse);
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if( pNew==0 ){
p->pPrior = pPrior;
}else{
pNew->pPrior = pPrior;
if( pPrior ) pPrior->pNext = pNew;
pNew->pNext = p;
p->pPrior = pNew;
SELECTTRACE(2,pParse,p,("compound-subquery flattener"
" creates %s.%p as peer\n",pNew->zSelName, pNew));
}
if( db->mallocFailed ) return 1;
}
/* Begin flattening the iFrom-th entry of the FROM clause
** in the outer query.
*/
................................................................................
pTabList = p->pSrc;
if( pParse->nErr || db->mallocFailed ){
goto select_end;
}
assert( p->pEList!=0 );
isAgg = (p->selFlags & SF_Aggregate)!=0;
#if SELECTTRACE_ENABLED
if( sqlite3SelectTrace & 0x104 ){
SELECTTRACE(0x104,pParse,p, ("after name resolution:\n"));
sqlite3TreeViewSelect(0, p, 0);
}
#endif
/* Get a pointer the VDBE under construction, allocating a new VDBE if one
** does not already exist */
v = sqlite3GetVdbe(pParse);
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