flink 状态设置

各位老师好，我这边使用的flink sql是" select funcId,funcIdDesc,serverIp,cast(min(maxTime-minTime) as varchar(200)) as minTime,pk from ( select a.funcId as funcId , a.funcIdDesc as funcIdDesc, a.serverIp as serverIp, b.outTime as maxTime, a.outTime as minTime, concat(a.funcId,a.serverIp) as pk

Flink SQL CEP如何处理双（多）流输入？

请问Flink SQL CEP只能处理单流输入吗？网上看到的例子都是在同一个输入流中进行CEP处理，有没有双（多）输入流下使用CEP处理的例子？谢谢！