SQLite

Check-in [29d6ceb383]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Avoid an unnecessary call to sqlite3XPrintf() in the code generator, for a performance improvement.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 29d6ceb3838394d902e248d1eab627625a857dccb5ed0bb66161a13fafc500c8
User & Date: drh 2017-06-28 00:55:50.411
Context
2017-06-28
01:12
Minor code simplification in the ALTER TABLE logic. (check-in: bfc4e7f30e user: drh tags: trunk)
00:55
Avoid an unnecessary call to sqlite3XPrintf() in the code generator, for a performance improvement. (check-in: 29d6ceb383 user: drh tags: trunk)
2017-06-27
23:36
Add SQLITE_DBCONFIG_ENABLE_QPSG that forces the query planner stability guarantee. This is the fix for ticket [b9f010107724c] (check-in: b82efd2a24 user: drh tags: trunk)
Changes
Side-by-Side Diff Ignore Whitespace Patch
Changes to src/build.c.
︙
4181
4182
4183
4184
4185
4186
4187
4188



4189
4190
4191
4192
4193
4194
4195

4181
4182
4183
4184
4185
4186
4187

4188
4189
4190
4191
4192
4193
4194
4195
4196
4197








-
+
+
+








    sqlite3XPrintf(&errMsg, "index '%q'", pIdx->zName);
  }else{
    for(j=0; j<pIdx->nKeyCol; j++){
      char *zCol;
      assert( pIdx->aiColumn[j]>=0 );
      zCol = pTab->aCol[pIdx->aiColumn[j]].zName;
      if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2);
      sqlite3XPrintf(&errMsg, "%s.%s", pTab->zName, zCol);
      sqlite3StrAccumAppendAll(&errMsg, pTab->zName);
      sqlite3StrAccumAppend(&errMsg, ".", 1);
      sqlite3StrAccumAppendAll(&errMsg, zCol);
    }
  }
  zErr = sqlite3StrAccumFinish(&errMsg);
  sqlite3HaltConstraint(pParse, 
    IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY 
                            : SQLITE_CONSTRAINT_UNIQUE,
    onError, zErr, P4_DYNAMIC, P5_ConstraintUnique);
︙