模块管理常规功能自定义系统的设计与实现(40--终级阶段 综合查询[7])

综合查询(7)--多个模块的查询

前几节讲的查询都是二个模块之间的，现在看看多模块的查询。其实原理是一样的，先选择字段，设计一个查询方案，把和订单相关的所有模块都选进去。



我又设置了二个条件，设置好后的查询主界面如下：



现在选择基准模块的菜单下有七个模块可供选择。也就是说上面的查询一共选择了七个表的数据。



现在一个个看看结果吧。先选择“订单”作为基准模块。



以客户单位作为基准模块：



再选择客户等级作为基准模块：



这个查询贴一下自动生成的sql 语句：

select
        top 5 '' as _total_ ,
        100 as _level_ ,
        0 as _count_ ,
        _t7014.tf_rateId as tf_rateId ,
        _t7014.tf_name as tf_name ,
        ( select
            sum(_t6050.tf_number)  
        from
            OrdersDetail _t6050 
        left outer join
            Orders _t6040 
                on _t6040.tf_ordersId = _t6050.tf_ordersId  
        left outer join
            Customer _t6010 
                on _t6010.tf_customerId = _t6040.tf_customerId  
        left outer join
            City _t7012 
                on _t7012.tf_cityId = _t6010.tf_cityId  
        left outer join
            Province _t7010 
                on _t7010.tf_provinceId = _t7012.tf_provinceId  
        left outer join
            Trade _t7016 
                on _t7016.tf_tradeId = _t6010.tf_tradeId  
        left outer join
            Rate _child_t7014 
                on _child_t7014.tf_rateId = _t6010.tf_rateId  
        left outer join
            Salesman _t6020 
                on _t6020.tf_salesmanId = _t6040.tf_salesmanId  
        left outer join
            _Department _t9011 
                on _t9011.tf_departmentId = _t6020.tf_departmentId  
        left outer join
            _DepartmentScope _t9010 
                on _t9010.tf_scopeId = _t9011.tf_scopeId  
        left outer join
            Product _t6030 
                on _t6030.tf_productId = _t6050.tf_productId  
        left outer join
            ProductClass _t7018 
                on _t7018.tf_productClassId = _t6030.tf_productClassId  
        where
            _t6030.tf_productId in (
                '1','2','3','4','5','6','7'
            ) 
            and _t6010.tf_customerId in (
                '1','2','3','4','5','6','7','8','9'
            ) 
            and _child_t7014.tf_rateId = _t7014.tf_rateId ) as S__t6050___tf_number ,
        ( select
            sum(_t6050.tf_subtotalPrice)  
        from
            OrdersDetail _t6050 
        left outer join
            Orders _t6040 
                on _t6040.tf_ordersId = _t6050.tf_ordersId  
        left outer join
            Customer _t6010 
                on _t6010.tf_customerId = _t6040.tf_customerId  
        left outer join
            City _t7012 
                on _t7012.tf_cityId = _t6010.tf_cityId  
        left outer join
            Province _t7010 
                on _t7010.tf_provinceId = _t7012.tf_provinceId  
        left outer join
            Trade _t7016 
                on _t7016.tf_tradeId = _t6010.tf_tradeId  
        left outer join
            Rate _child_t7014 
                on _child_t7014.tf_rateId = _t6010.tf_rateId  
        left outer join
            Salesman _t6020 
                on _t6020.tf_salesmanId = _t6040.tf_salesmanId  
        left outer join
            _Department _t9011 
                on _t9011.tf_departmentId = _t6020.tf_departmentId  
        left outer join
            _DepartmentScope _t9010 
                on _t9010.tf_scopeId = _t9011.tf_scopeId  
        left outer join
            Product _t6030 
                on _t6030.tf_productId = _t6050.tf_productId  
        left outer join
            ProductClass _t7018 
                on _t7018.tf_productClassId = _t6030.tf_productClassId  
        where
            _t6030.tf_productId in (
                '1','2','3','4','5','6','7'
            ) 
            and _t6010.tf_customerId in (
                '1','2','3','4','5','6','7','8','9'
            ) 
            and _child_t7014.tf_rateId = _t7014.tf_rateId ) as S__t6050___tf_subtotalPrice ,
        ( select
            max(_t6050.tf_subtotalPrice)  
        from
            OrdersDetail _t6050 
        left outer join
            Orders _t6040 
                on _t6040.tf_ordersId = _t6050.tf_ordersId  
        left outer join
            Customer _t6010 
                on _t6010.tf_customerId = _t6040.tf_customerId  
        left outer join
            City _t7012 
                on _t7012.tf_cityId = _t6010.tf_cityId  
        left outer join
            Province _t7010 
                on _t7010.tf_provinceId = _t7012.tf_provinceId  
        left outer join
            Trade _t7016 
                on _t7016.tf_tradeId = _t6010.tf_tradeId  
        left outer join
            Rate _child_t7014 
                on _child_t7014.tf_rateId = _t6010.tf_rateId  
        left outer join
            Salesman _t6020 
                on _t6020.tf_salesmanId = _t6040.tf_salesmanId  
        left outer join
            _Department _t9011 
                on _t9011.tf_departmentId = _t6020.tf_departmentId  
        left outer join
            _DepartmentScope _t9010 
                on _t9010.tf_scopeId = _t9011.tf_scopeId  
        left outer join
            Product _t6030 
                on _t6030.tf_productId = _t6050.tf_productId  
        left outer join
            ProductClass _t7018 
                on _t7018.tf_productClassId = _t6030.tf_productClassId  
        where
            _t6030.tf_productId in (
                '1','2','3','4','5','6','7'
            ) 
            and _t6010.tf_customerId in (
                '1','2','3','4','5','6','7','8','9'
            ) 
            and _child_t7014.tf_rateId = _t7014.tf_rateId ) as X__t6050___tf_subtotalPrice ,
        ( select
            min(_t6050.tf_subtotalPrice)  
        from
            OrdersDetail _t6050 
        left outer join
            Orders _t6040 
                on _t6040.tf_ordersId = _t6050.tf_ordersId  
        left outer join
            Customer _t6010 
                on _t6010.tf_customerId = _t6040.tf_customerId  
        left outer join
            City _t7012 
                on _t7012.tf_cityId = _t6010.tf_cityId  
        left outer join
            Province _t7010 
                on _t7010.tf_provinceId = _t7012.tf_provinceId  
        left outer join
            Trade _t7016 
                on _t7016.tf_tradeId = _t6010.tf_tradeId  
        left outer join
            Rate _child_t7014 
                on _child_t7014.tf_rateId = _t6010.tf_rateId  
        left outer join
            Salesman _t6020 
                on _t6020.tf_salesmanId = _t6040.tf_salesmanId  
        left outer join
            _Department _t9011 
                on _t9011.tf_departmentId = _t6020.tf_departmentId  
        left outer join
            _DepartmentScope _t9010 
                on _t9010.tf_scopeId = _t9011.tf_scopeId  
        left outer join
            Product _t6030 
                on _t6030.tf_productId = _t6050.tf_productId  
        left outer join
            ProductClass _t7018 
                on _t7018.tf_productClassId = _t6030.tf_productClassId  
        where
            _t6030.tf_productId in (
                '1','2','3','4','5','6','7'
            ) 
            and _t6010.tf_customerId in (
                '1','2','3','4','5','6','7','8','9'
            ) 
            and _child_t7014.tf_rateId = _t7014.tf_rateId ) as N__t6050___tf_subtotalPrice   
    from
        Rate _t7014

这个语句很长，如果字段多的话会更加长，至于表多得会不会超过数据库的限制，或者是执行效率太低，这个就不是我考虑的事了，这是数据库公司去做的活了。现在都是云计算了，对于中小型的管理应用，sql的执行效率和速度我都忽略不计。

下面选择以省份为基准模块：



下面是选择了市以后的图：选择了市以后，会加入“省”，因为省是市的父模块。



还有几个模块不贴了，大同小异。以上即为多模块查询方案的简单例子。在实际使用过程中如果觉得不能满足需求，那你可以先行建立一个视图，然后配置视图的信息，作为模块放入到综合查询里面，直接联合使用。

还有一个非常重要内容的这里先提一下，如果操作员对某个模块有记录查看限制，比如说只能看“销售二部”的数据，那么在综合查询的所有的涉及到部门的子模块的查询，包括聚合查询时，都会加入对于“销售二部”的限制。你所有设置的对操作员的记录查看限制，都会自动的加到所查询的表上。这样综合查询的权限问题得以根本解决，查询的数据不会超出权限的范围。