isDifferentRow   67577 ext/sqlite3/libsqlite/sqlite3.c   int isDifferentRow, rc;
isDifferentRow   67580 ext/sqlite3/libsqlite/sqlite3.c   rc = sqlite3BtreeCursorRestore(p->pCursor, &isDifferentRow);
isDifferentRow   67582 ext/sqlite3/libsqlite/sqlite3.c   if( isDifferentRow ) p->nullRow = 1;