at can contain the SQL % and _ wildcard\ncharacters. The pattern is useful for restricting statement output to\nmatching values.\n\nSeveral SHOW statements also accept a WHERE clause that provides more\nflexibility in specifying which rows to display. See\nhttp://dev.mysql.com/doc/refman/5.7/en/extended-show.html.\n\nURL: http://dev.mysql.com/doc/refman/5.7/en/show.html\n\n','','http://dev.mysql.com/doc/refman/5.7/en/show.html');