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Overview
| Comment: | Add a NEVER() macro and an explanation comment around an unreachable branch in the STAT3 logic. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | nextgen-query-plan-exp |
| Files: | files | file ages | folders |
| SHA1: |
604c3c5de6fd8f8a569aa9ed981055a5 |
| User & Date: | drh 2013-06-20 17:32:28 |
Context
|
2013-06-26
| ||
| 00:34 | Fix an uninitialized variable detected by valgrind. Unclear whether or not this should apply to trunk. Closed-Leaf check-in: 19ab4811 user: drh tags: nextgen-query-plan-exp | |
|
2013-06-21
| ||
| 00:35 | Modify the query planner interface so that it always passes in the result set. This is the first step toward adding an optimization that will omit tables from a join that do not contribute to the result. check-in: 2c2577e6 user: drh tags: omit-join-table-opt | |
|
2013-06-20
| ||
| 17:32 | Add a NEVER() macro and an explanation comment around an unreachable branch in the STAT3 logic. check-in: 604c3c5d user: drh tags: nextgen-query-plan-exp | |
| 14:17 | Pull in the posix_fallocate() change from trunk. check-in: d94db3fd user: drh tags: nextgen-query-plan-exp | |
Changes
Changes to src/where.c.
2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 |
const u8 *z;
if( eType==SQLITE_BLOB ){
z = (const u8 *)sqlite3_value_blob(pVal);
pColl = db->pDfltColl;
assert( pColl->enc==SQLITE_UTF8 );
}else{
pColl = sqlite3GetCollSeq(pParse, SQLITE_UTF8, 0, *pIdx->azColl);
if( pColl==0 ){
return SQLITE_ERROR;
}
z = (const u8 *)sqlite3ValueText(pVal, pColl->enc);
if( !z ){
return SQLITE_NOMEM;
}
assert( z && pColl && pColl->xCmp );
}
n = sqlite3ValueBytes(pVal, pColl->enc);
|
| > > | < |
2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 |
const u8 *z;
if( eType==SQLITE_BLOB ){
z = (const u8 *)sqlite3_value_blob(pVal);
pColl = db->pDfltColl;
assert( pColl->enc==SQLITE_UTF8 );
}else{
pColl = sqlite3GetCollSeq(pParse, SQLITE_UTF8, 0, *pIdx->azColl);
/* If the collating sequence was unavailable, we should have failed
** long ago and never reached this point. But we'll check just to
** be doubly sure. */
if( NEVER(pColl==0) ) return SQLITE_ERROR;
z = (const u8 *)sqlite3ValueText(pVal, pColl->enc);
if( !z ){
return SQLITE_NOMEM;
}
assert( z && pColl && pColl->xCmp );
}
n = sqlite3ValueBytes(pVal, pColl->enc);
|