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Overview
| Comment: | Minor tweak to vdbeRecordCompareInt(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | experimental |
| Files: | files | file ages | folders |
| SHA1: |
284bde0ee20261737446eb8f5b6b36ad |
| User & Date: | dan 2014-02-28 09:48:30 |
Context
|
2014-02-28
| ||
| 18:39 | Update some test cases that deal with corrupt databases. (check-in: 3a09f560 user: dan tags: experimental) | |
| 09:48 | Minor tweak to vdbeRecordCompareInt(). (check-in: 284bde0e user: dan tags: experimental) | |
|
2014-02-27
| ||
| 20:52 | Merge in latest trunk changes. (check-in: 8f30b095 user: dan tags: experimental) | |
Changes
Changes to src/vdbeaux.c.
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const u8 *aKey = &((const u8*)pKey1)[szHdr];
int serial_type = ((const u8*)pKey1)[1];
int res;
i64 v = pPKey2->aMem[0].u.i;
i64 lhs;
switch( serial_type ){
case 1:
lhs = (char)(aKey[0]);
break;
case 2:
lhs = 256*(signed char)aKey[0] + aKey[1];
break;
case 3:
................................................................................
lhs = 0;
break;
case 9:
lhs = 1;
break;
default:
return vdbeRecordCompare(nKey1, pKey1, szHdr, 1, pPKey2);
}
if( v>lhs ){
res = pPKey2->r1;
}else if( v<lhs ){
res = pPKey2->r2;
}else if( pPKey2->nField>1 ){
res = vdbeRecordCompare(nKey1, pKey1, szHdr, 0, pPKey2);
}else{
res = pPKey2->default_rc;
}
assert( (res==0 && vdbeRecordComparePrev(nKey1, pKey1, pPKey2)==0)
|| (res<0 && vdbeRecordComparePrev(nKey1, pKey1, pPKey2)<0)
|| (res>0 && vdbeRecordComparePrev(nKey1, pKey1, pPKey2)>0)
|| CORRUPT_DB
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const u8 *aKey = &((const u8*)pKey1)[szHdr];
int serial_type = ((const u8*)pKey1)[1];
int res;
i64 v = pPKey2->aMem[0].u.i;
i64 lhs;
switch( serial_type ){
case 1:
lhs = (char)(aKey[0]);
break;
case 2:
lhs = 256*(signed char)aKey[0] + aKey[1];
break;
case 3:
................................................................................
lhs = 0;
break;
case 9:
lhs = 1;
break;
/* This case could be removed without changing the results of running
** this code. Including it causes gcc to generate a faster switch
** statement (since the range of switch targets now starts at zero and
** is contiguous)) but does not cause any duplicate code to be generated
** (as gcc is clever enough to combine the two like cases). Other
** compilers might be similar. */
case 0: case 7:
return vdbeRecordCompare(nKey1, pKey1, szHdr, 1, pPKey2);
default:
return vdbeRecordCompare(nKey1, pKey1, szHdr, 1, pPKey2);
}
if( v>lhs ){
res = pPKey2->r1;
}else if( v<lhs ){
res = pPKey2->r2;
}else if( pPKey2->nField>1 ){
/* The first fields of the two keys are equal. Compare the trailing
** fields. */
res = vdbeRecordCompare(nKey1, pKey1, szHdr, 0, pPKey2);
}else{
/* The first fields of the two keys are equal and there are no trailing
** fields. Return pPKey2->default_rc in this case. */
res = pPKey2->default_rc;
}
assert( (res==0 && vdbeRecordComparePrev(nKey1, pKey1, pPKey2)==0)
|| (res<0 && vdbeRecordComparePrev(nKey1, pKey1, pPKey2)<0)
|| (res>0 && vdbeRecordComparePrev(nKey1, pKey1, pPKey2)>0)
|| CORRUPT_DB
|