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Overview
| Comment: | Avoid an unnecessary call to sqlite3XPrintf() in the code generator, for a performance improvement. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
29d6ceb3838394d902e248d1eab62762 |
| User & Date: | drh 2017-06-28 00:55:50 |
Context
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2017-06-28
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| 01:12 | Minor code simplification in the ALTER TABLE logic. check-in: bfc4e7f3 user: drh tags: trunk | |
| 00:55 | Avoid an unnecessary call to sqlite3XPrintf() in the code generator, for a performance improvement. check-in: 29d6ceb3 user: drh tags: trunk | |
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2017-06-27
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| 23:36 | Add SQLITE_DBCONFIG_ENABLE_QPSG that forces the query planner stability guarantee. This is the fix for ticket [b9f010107724c] check-in: b82efd2a user: drh tags: trunk | |
Changes
Changes to src/build.c.
4181 4181 sqlite3XPrintf(&errMsg, "index '%q'", pIdx->zName); 4182 4182 }else{ 4183 4183 for(j=0; j<pIdx->nKeyCol; j++){ 4184 4184 char *zCol; 4185 4185 assert( pIdx->aiColumn[j]>=0 ); 4186 4186 zCol = pTab->aCol[pIdx->aiColumn[j]].zName; 4187 4187 if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2); 4188 - sqlite3XPrintf(&errMsg, "%s.%s", pTab->zName, zCol); 4188 + sqlite3StrAccumAppendAll(&errMsg, pTab->zName); 4189 + sqlite3StrAccumAppend(&errMsg, ".", 1); 4190 + sqlite3StrAccumAppendAll(&errMsg, zCol); 4189 4191 } 4190 4192 } 4191 4193 zErr = sqlite3StrAccumFinish(&errMsg); 4192 4194 sqlite3HaltConstraint(pParse, 4193 4195 IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY 4194 4196 : SQLITE_CONSTRAINT_UNIQUE, 4195 4197 onError, zErr, P4_DYNAMIC, P5_ConstraintUnique);