225     Index *pPk = sqlite3PrimaryKeyIndex(pTab);  in sqlite3LimitWhere()  local
226     if( pPk->nKeyCol==1 ){  in sqlite3LimitWhere()
227       const char *zName = pTab->aCol[pPk->aiColumn[0]].zCnName;  in sqlite3LimitWhere()
232       for(i=0; i<pPk->nKeyCol; i++){  in sqlite3LimitWhere()
233         Expr *p = sqlite3Expr(db, TK_ID, pTab->aCol[pPk->aiColumn[i]].zCnName);  in sqlite3LimitWhere()
302   Index *pPk;            /* The PRIMARY KEY index on the table */  in sqlite3DeleteFrom()  local
490       pPk = 0;  in sqlite3DeleteFrom()
497       pPk = sqlite3PrimaryKeyIndex(pTab);  in sqlite3DeleteFrom()
498       assert( pPk!=0 );  in sqlite3DeleteFrom()
499       nPk = pPk->nKeyCol;  in sqlite3DeleteFrom()
504       sqlite3VdbeSetP4KeyInfo(pParse, pPk);  in sqlite3DeleteFrom()
531     if( pPk ){  in sqlite3DeleteFrom()
533         assert( pPk->aiColumn[i]>=0 );  in sqlite3DeleteFrom()
535                                         pPk->aiColumn[i], iPk+i);  in sqlite3DeleteFrom()
560       if( pPk ){  in sqlite3DeleteFrom()
565             sqlite3IndexAffinityStr(pParse->db, pPk), nPk);  in sqlite3DeleteFrom()
588       assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur );  in sqlite3DeleteFrom()
589       assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 );  in sqlite3DeleteFrom()
601         assert( pPk!=0 || IsView(pTab) );  in sqlite3DeleteFrom()
605     }else if( pPk ){  in sqlite3DeleteFrom()
646     }else if( pPk ){  in sqlite3DeleteFrom()
899   Index *pPk;        /* PRIMARY KEY index, or NULL for rowid tables */  in sqlite3GenerateRowIndexDelete()  local
902   pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab);  in sqlite3GenerateRowIndexDelete()
904     assert( iIdxCur+i!=iDataCur || pPk==pIdx );  in sqlite3GenerateRowIndexDelete()
906     if( pIdx==pPk ) continue;  in sqlite3GenerateRowIndexDelete()