database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-14 00:22:38 +03:00
Code Activity

Add more bits to the bit vector that is used to disable optimizations for

Browse Source 
built-in test.  Add specific bit patterns to disable ORDER BY using an
index in general and for joins.  Use macros to test for bits in the 
disabled-optimization bit vector, in order to make the code clearer.

FossilOrigin-Name: d2fcba1e143beca8c45724d2108870657c269e17
This commit is contained in:
drh
2012-09-27 15:05:54 +00:00
parent 32634d270c
commit 7e5418e4a4
9 changed files with 77 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/select.c
View File

@@ -2809,7 +2809,7 @@ static int flattenSubquery(
*/
assert( p!=0 );
assert( p->pPrior==0 ); /* Unable to flatten compound queries */
if( db->flags & SQLITE_QueryFlattener ) return 0;
if( OptimizationDisabled(db, SQLITE_QueryFlattener) ) return 0;
pSrc = p->pSrc;
assert( pSrc && iFrom>=0 && iFrom<pSrc->nSrc );
pSubitem = &pSrc->a[iFrom];
@@ -4012,7 +4012,7 @@ int sqlite3Select(
** to disable this optimization for testing purposes.
*/
if( sqlite3ExprListCompare(p->pGroupBy, pOrderBy)==0
&& (db->flags & SQLITE_GroupByOrder)==0 ){
&& OptimizationEnabled(db, SQLITE_GroupByOrder) ){
pOrderBy = 0;
}