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Overview
| Comment: | More intuitive labels on ".wheretrace" output. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
adcb3fed489b580221c7bf2692a60e24 |
| User & Date: | drh 2014-10-08 00:08:08 |
Context
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2014-10-08
| ||
| 02:53 | Fix the STAT4 range scan estimates for DESC indexes. check-in: e3fe8400 user: drh tags: trunk | |
| 00:08 | More intuitive labels on ".wheretrace" output. check-in: adcb3fed user: drh tags: trunk | |
|
2014-10-07
| ||
| 23:02 | Make sure the sqlite3VdbeMemClearAndResize() routine is never called with a zero size parameter, since a size of zero could lead to either a memory leak or an assertion fault. check-in: f672a380 user: drh tags: trunk | |
Changes
Changes to src/where.c.
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ppPrev = whereLoopFindLesser(&pWInfo->pLoops, pTemplate);
if( ppPrev==0 ){
/* There already exists a WhereLoop on the list that is better
** than pTemplate, so just ignore pTemplate */
#if WHERETRACE_ENABLED /* 0x8 */
if( sqlite3WhereTrace & 0x8 ){
sqlite3DebugPrintf("ins-noop: ");
whereLoopPrint(pTemplate, pBuilder->pWC);
}
#endif
return SQLITE_OK;
}else{
p = *ppPrev;
}
................................................................................
/* If we reach this point it means that either p[] should be overwritten
** with pTemplate[] if p[] exists, or if p==NULL then allocate a new
** WhereLoop and insert it.
*/
#if WHERETRACE_ENABLED /* 0x8 */
if( sqlite3WhereTrace & 0x8 ){
if( p!=0 ){
sqlite3DebugPrintf("ins-del: ");
whereLoopPrint(p, pBuilder->pWC);
}
sqlite3DebugPrintf("ins-new: ");
whereLoopPrint(pTemplate, pBuilder->pWC);
}
#endif
if( p==0 ){
/* Allocate a new WhereLoop to add to the end of the list */
*ppPrev = p = sqlite3DbMallocRaw(db, sizeof(WhereLoop));
if( p==0 ) return SQLITE_NOMEM;
................................................................................
ppTail = whereLoopFindLesser(ppTail, pTemplate);
if( ppTail==0 ) break;
pToDel = *ppTail;
if( pToDel==0 ) break;
*ppTail = pToDel->pNextLoop;
#if WHERETRACE_ENABLED /* 0x8 */
if( sqlite3WhereTrace & 0x8 ){
sqlite3DebugPrintf("ins-del: ");
whereLoopPrint(pToDel, pBuilder->pWC);
}
#endif
whereLoopDelete(db, pToDel);
}
}
whereLoopXfer(db, p, pTemplate);
|
| | | | |
4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 .... 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 .... 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 |
ppPrev = whereLoopFindLesser(&pWInfo->pLoops, pTemplate);
if( ppPrev==0 ){
/* There already exists a WhereLoop on the list that is better
** than pTemplate, so just ignore pTemplate */
#if WHERETRACE_ENABLED /* 0x8 */
if( sqlite3WhereTrace & 0x8 ){
sqlite3DebugPrintf(" skip: ");
whereLoopPrint(pTemplate, pBuilder->pWC);
}
#endif
return SQLITE_OK;
}else{
p = *ppPrev;
}
................................................................................
/* If we reach this point it means that either p[] should be overwritten
** with pTemplate[] if p[] exists, or if p==NULL then allocate a new
** WhereLoop and insert it.
*/
#if WHERETRACE_ENABLED /* 0x8 */
if( sqlite3WhereTrace & 0x8 ){
if( p!=0 ){
sqlite3DebugPrintf("replace: ");
whereLoopPrint(p, pBuilder->pWC);
}
sqlite3DebugPrintf(" add: ");
whereLoopPrint(pTemplate, pBuilder->pWC);
}
#endif
if( p==0 ){
/* Allocate a new WhereLoop to add to the end of the list */
*ppPrev = p = sqlite3DbMallocRaw(db, sizeof(WhereLoop));
if( p==0 ) return SQLITE_NOMEM;
................................................................................
ppTail = whereLoopFindLesser(ppTail, pTemplate);
if( ppTail==0 ) break;
pToDel = *ppTail;
if( pToDel==0 ) break;
*ppTail = pToDel->pNextLoop;
#if WHERETRACE_ENABLED /* 0x8 */
if( sqlite3WhereTrace & 0x8 ){
sqlite3DebugPrintf(" delete: ");
whereLoopPrint(pToDel, pBuilder->pWC);
}
#endif
whereLoopDelete(db, pToDel);
}
}
whereLoopXfer(db, p, pTemplate);
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