sqliteBtreeKeySize
sqliteBtreeKeySize(pCur, &n);
sqliteBtreeKeySize(pCur, &n1);
res = sqliteBtreeKeySize(pC->pCursor,&keysize)!=0 || keysize==0;
sqliteBtreeKeySize(pCrsr, &n);
sqliteBtreeKeySize(pCrsr, &payloadSize);
sqliteBtreeKeySize(pCrsr, &amt);
sqliteBtreeKeySize(pCrsr, &n);
sqliteBtreeKeySize(pCrsr, &sz);