Stream processing in 3.x not working as expected

[haoguangsu]

max_current里为什么显示的不是meters里的最大值10.8，反而是最小值10.3？

[EngrealSun]

因为创建流式计算的子查询中有过滤条件 voltage <= 220 create stream current_stream trigger at_once into current_stream_output_stb as select _wstart as wstart, _wend as wend, max(current) as max_current from meters where voltage <= 220 interval (5s);