当前是gzgl数据库，使用（）语句可以查看xsgl数据库内的所有event事件信息。【本题2项正确】

A. showeventsfromxsgl;
B. showevents;
C. showeventsinxsgl;
D. showeventswheredb='xsgl';
E. showeventswheredatabase='xsgl';