226   Btree *pBt;  in dbpageFilter()  local
241   pBt = db->aDb[pCsr->iDb].pBt;  in dbpageFilter()
242   if( pBt==0 ) return SQLITE_OK;  in dbpageFilter()
243   pCsr->pPager = sqlite3BtreePager(pBt);  in dbpageFilter()
244   pCsr->szPage = sqlite3BtreeGetPageSize(pBt);  in dbpageFilter()
245   pCsr->mxPgno = sqlite3BtreeLastPage(pBt);  in dbpageFilter()
319   Btree *pBt;  in dbpageUpdate()  local
342   pBt = pTab->db->aDb[iDb].pBt;  in dbpageUpdate()
343   if( pgno<1 || pBt==0 || pgno>sqlite3BtreeLastPage(pBt) ){  in dbpageUpdate()
347   szPage = sqlite3BtreeGetPageSize(pBt);  in dbpageUpdate()
354   pPager = sqlite3BtreePager(pBt);  in dbpageUpdate()
384     Btree *pBt = db->aDb[i].pBt;  in dbpageBegin()  local
385     if( pBt ) rc = sqlite3BtreeBeginTrans(pBt, 1, 0);  in dbpageBegin()