Index: src/where.c ================================================================== --- src/where.c +++ src/where.c @@ -1649,20 +1649,19 @@ ** be a covering index because the index will not be updated if the ** original table changes and the index and table cannot both be used ** if they go out of sync. */ extraCols = pSrc->colUsed & (~idxCols | MASKBIT(BMS-1)); - mxBitCol = (pTable->nCol >= BMS-1) ? BMS-1 : pTable->nCol; + mxBitCol = MIN(BMS-1,pTable->nCol); testcase( pTable->nCol==BMS-1 ); testcase( pTable->nCol==BMS-2 ); for(i=0; icolUsed & MASKBIT(BMS-1) ){ nKeyCol += pTable->nCol - BMS + 1; } - pLoop->wsFlags |= WHERE_COLUMN_EQ | WHERE_IDX_ONLY; /* Construct the Index object to describe this index */ pIdx = sqlite3AllocateIndexObject(pParse->db, nKeyCol+1, 0, &zNotUsed); if( pIdx==0 ) goto end_auto_index_create; pLoop->u.btree.pIndex = pIdx;