${if($fr_username="21981" || $fr_username="14433"," and cCusDefine4='电商客户'","")}
${if( or(fr_username="21981" , fr_username="14433" ,len(fr_username) = 0)," and cCusDefine4='电商客户'","")}
你的要改成这样, 但是你这个也不是选的啊,是系统获取当前的用户名去判断的
${if( isnull(参数名),"","and cCusDefine4='电商客户'")}
参数为空,就全部查询
参数不为空,查询电商客户