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Overview
| Comment: | Use memcmp() instead of the BINARY collating function where possible, for a performance boost. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | c5a3a1af3c7bd34886e944a1fef2f634 |
| User & Date: | drh 2013-12-06 22:45:31 |
Context
|
2013-12-06
| ||
| 23:25 | Performance optimization to the moveToRoot() subroutine in btree.c. check-in: b5842a70 user: drh tags: trunk | |
| 22:45 | Use memcmp() instead of the BINARY collating function where possible, for a performance boost. check-in: c5a3a1af user: drh tags: trunk | |
| 22:44 | Remove some commented-out code from sqlite3BtreeMovetoUnpacked() to try to make it more readable. check-in: 2d62d113 user: drh tags: trunk | |
Changes
Changes to src/build.c.
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}else{
pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0);
}
if( pKey ){
assert( sqlite3KeyInfoIsWriteable(pKey) );
for(i=0; i<nCol; i++){
char *zColl = pIdx->azColl[i];
if( NEVER(zColl==0) ) zColl = "BINARY";
pKey->aColl[i] = sqlite3LocateCollSeq(pParse, zColl);
pKey->aSortOrder[i] = pIdx->aSortOrder[i];
}
if( pParse->nErr ){
sqlite3KeyInfoUnref(pKey);
}else{
pIdx->pKeyInfo = pKey;
}
}
}
return sqlite3KeyInfoRef(pIdx->pKeyInfo);
}
|
| > | |
4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 |
}else{
pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0);
}
if( pKey ){
assert( sqlite3KeyInfoIsWriteable(pKey) );
for(i=0; i<nCol; i++){
char *zColl = pIdx->azColl[i];
assert( zColl!=0 );
pKey->aColl[i] = strcmp(zColl,"BINARY")==0 ? 0 :
sqlite3LocateCollSeq(pParse, zColl);
pKey->aSortOrder[i] = pIdx->aSortOrder[i];
}
if( pParse->nErr ){
sqlite3KeyInfoUnref(pKey);
}else{
pIdx->pKeyInfo = pKey;
}
}
}
return sqlite3KeyInfoRef(pIdx->pKeyInfo);
}
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