190   Index *pIdx = 0;                    /* Value to return via *ppIdx */  in sqlite3FkLocateIndex()  local
229   for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){  in sqlite3FkLocateIndex()
230     if( pIdx->nKeyCol==nCol && IsUniqueIndex(pIdx) && pIdx->pPartIdxWhere==0 ){   in sqlite3FkLocateIndex()
239         if( IsPrimaryKeyIndex(pIdx) ){  in sqlite3FkLocateIndex()
253           i16 iCol = pIdx->aiColumn[i];     /* Index of column in parent tbl */  in sqlite3FkLocateIndex()
264           if( sqlite3StrICmp(pIdx->azColl[i], zDfltColl) ) break;  in sqlite3FkLocateIndex()
280   if( !pIdx ){  in sqlite3FkLocateIndex()
290   *ppIdx = pIdx;  in sqlite3FkLocateIndex()
324   Index *pIdx,          /* Unique index on parent key columns in pTab */  in fkLookupParent()  argument
359     if( pIdx==0 ){  in fkLookupParent()
394       sqlite3VdbeAddOp3(v, OP_OpenRead, iCur, pIdx->tnum, iDb);  in fkLookupParent()
395       sqlite3VdbeSetP4KeyInfo(pParse, pIdx);  in fkLookupParent()
418           iParent += sqlite3TableColumnToStorage(pIdx->pTable,  in fkLookupParent()
419                                                  pIdx->aiColumn[i]);  in fkLookupParent()
420           assert( pIdx->aiColumn[i]>=0 );  in fkLookupParent()
422           if( pIdx->aiColumn[i]==pTab->iPKey ){  in fkLookupParent()
433                         sqlite3IndexAffinityStr(pParse->db,pIdx), nCol);  in fkLookupParent()
551   Index *pIdx,                    /* Index on parent covering the foreign key */  in fkScanChildren()  argument
565   assert( pIdx==0 || pIdx->pTable==pTab );  in fkScanChildren()
566   assert( pIdx==0 || pIdx->nKeyCol==pFKey->nCol );  in fkScanChildren()
567   assert( pIdx!=0 || pFKey->nCol==1 );  in fkScanChildren()
568   assert( pIdx!=0 || HasRowid(pTab) );  in fkScanChildren()
590     iCol = pIdx ? pIdx->aiColumn[i] : -1;  in fkScanChildren()
624       assert( pIdx!=0 );  in fkScanChildren()
625       for(i=0; i<pIdx->nKeyCol; i++){  in fkScanChildren()
626         i16 iCol = pIdx->aiColumn[i];  in fkScanChildren()
915     Index *pIdx = 0;              /* Index on key columns in pTo */  in sqlite3FkCheck()  local
938     if( !pTo || sqlite3FkLocateIndex(pParse, pTo, pFKey, &pIdx, &aiFree) ){  in sqlite3FkCheck()
961     assert( pFKey->nCol==1 || (aiFree && pIdx) );  in sqlite3FkCheck()
973       assert( pIdx==0 || pIdx->aiColumn[i]>=0 );  in sqlite3FkCheck()
980         char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zCnName;  in sqlite3FkCheck()
997       fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1, bIgnore);  in sqlite3FkCheck()
1008       fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regNew, +1, bIgnore);  in sqlite3FkCheck()
1017     Index *pIdx = 0;              /* Foreign key index for pFKey */  in sqlite3FkCheck()  local
1034     if( sqlite3FkLocateIndex(pParse, pTab, pFKey, &pIdx, &aiCol) ){  in sqlite3FkCheck()
1051         fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regNew, -1);  in sqlite3FkCheck()
1055         fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regOld, 1);  in sqlite3FkCheck()
1102       Index *pIdx = 0;  in sqlite3FkOldmask()  local
1103       sqlite3FkLocateIndex(pParse, pTab, p, &pIdx, 0);  in sqlite3FkOldmask()
1104       if( pIdx ){  in sqlite3FkOldmask()
1105         for(i=0; i<pIdx->nKeyCol; i++){  in sqlite3FkOldmask()
1106           assert( pIdx->aiColumn[i]>=0 );  in sqlite3FkOldmask()
1107           mask |= COLUMN_MASK(pIdx->aiColumn[i]);  in sqlite3FkOldmask()
1228     Index *pIdx = 0;              /* Parent key index for this FK */  in fkActionTrigger()  local
1237     if( sqlite3FkLocateIndex(pParse, pTab, pFKey, &pIdx, &aiCol) ) return 0;  in fkActionTrigger()
1250       assert( pIdx!=0 || (pTab->iPKey>=0 && pTab->iPKey<pTab->nCol) );  in fkActionTrigger()
1251       assert( pIdx==0 || pIdx->aiColumn[i]>=0 );  in fkActionTrigger()
1253                    pTab->aCol[pIdx ? pIdx->aiColumn[i] : pTab->iPKey].zCnName);  in fkActionTrigger()