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Overview
Comment: | Use memcmp() instead of the BINARY collating function where possible, for a performance boost. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
c5a3a1af3c7bd34886e944a1fef2f634 |
User & Date: | drh 2013-12-06 22:45:31.452 |
Context
2013-12-06
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23:25 | Performance optimization to the moveToRoot() subroutine in btree.c. (check-in: b5842a70f8 user: drh tags: trunk) | |
22:45 | Use memcmp() instead of the BINARY collating function where possible, for a performance boost. (check-in: c5a3a1af3c user: drh tags: trunk) | |
22:44 | Remove some commented-out code from sqlite3BtreeMovetoUnpacked() to try to make it more readable. (check-in: 2d62d1131f user: drh tags: trunk) | |
Changes
Changes to src/build.c.
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4179 4180 4181 4182 4183 4184 4185 | }else{ pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0); } if( pKey ){ assert( sqlite3KeyInfoIsWriteable(pKey) ); for(i=0; i<nCol; i++){ char *zColl = pIdx->azColl[i]; | | > | | 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 | }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; } |
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