Sql 将参数传递给联接

我需要创建一个用于生成报告的视图。该视图将获取一个用户表，并根据用户ID和订单ID将其与一个订单表和一个工作流表连接起来。由于我需要根据两个不同的订单状态多次连接订单表，因此该视图非常复杂

我需要能够获得每个用户打开状态的订单数量计数，状态为“已退回”、“保留”或“已退回-故障”的订单数量计数，以及每个用户在每个地区的订单数量计数

把所有的数据放在一起是很好的，我刚刚设置了一个简单的select，为每个计数要求建立了一个连接，如下所示。我的问题是，这将返回表中所有记录的计数，并且我需要能够将其限制为将参数化的特定时间内的订单

我需要一些帮助来获得连接的时间限制

select u.FIRST_NAME || ' ' || u.LAST_NAME as ASSIGNED_TO,
u.ID,
j4.TOTAL_AREA1,
j1.total,
j2.TOTAL_OPENED,
j3.TOTAL_RETURNED

from users u
left outer join
(      
 select u1.FIRST_NAME || ' ' || u1.LAST_NAME as ASSIGNED_TO,
        u1.ID,
        COUNT(o1.ORDER_KEY) as total
 from users u1,
  orders o1,
  WORKFLOW_WORKITEM ww1    

 where
        o1.ORDER_KEY = ww1.ENTITY_KEY_NUM
        AND ww1.ENTITY_NAME = 'Order'
        AND ww1.ASSIGNED_TO = U1.ID

 GROUP BY u1.FIRST_NAME,
        u1.LAST_NAME,
        u1.id) j1
on 
j1.ID = u.ID


left outer join 
(      
 select u1.FIRST_NAME || ' ' || u1.LAST_NAME as ASSIGNED_TO,
        u1.ID,
        COUNT(o1.ORDER_KEY) as TOTAL_OPENED
 from users u1,
      ORDERS o1,
      WORKFLOW_WORKITEM ww1    

 where
        o1.CASE_KEY = ww1.ENTITY_KEY_NUM
        AND ww1.ENTITY_NAME = 'Order'
        AND ww1.ASSIGNED_TO = U1.ID
        AND ww1.STATUS_CODE='S_ORD_CA_021'

 GROUP BY u1.FIRST_NAME,
        u1.LAST_NAME,
        u1.id) j2
on 
j2.ID = u.ID
left outer join 
(      
 select u1.FIRST_NAME || ' ' || u1.LAST_NAME as ASSIGNED_TO,
        u1.ID,
        COUNT(o1.ORDER_KEY) as TOTAL_RETURNED
 from users u1,
      ORDERS o1,

      WORKFLOW_WORKITEM ww1    

 where
        o1.ORDER_KEY = ww1.ENTITY_KEY_NUM
        AND ww1.ENTITY_NAME = 'Order'
        AND ww1.ASSIGNED_TO = U1.ID
        AND ww1.STATUS_CODE in ('S_ORD_CA_015', 'S_ORD_CA_016', 'S_ORD_CA_017','S_ORD_CA_018')

 GROUP BY u1.FIRST_NAME,
        u1.LAST_NAME,
        u1.id) j3
on 
j3.ID = u.ID


left outer join
(
select  
        u1.ID,
        COUNT(o1.ORDER_KEY) as TOTAL_AREA1

from    users u1,
        ORDERS o1,
        WORKFLOW_WORKITEM ww1,
        domains dm  

where
        o1.ORDER_KEY = ww1.ENTITY_KEY_NUM
        AND ww1.ENTITY_NAME = 'Order'
        AND ww1.ASSIGNED_TO = U1.ID
        and ww1.DOMAIN_ID=dm.ID
    AND dm.CODE='AREA1'

GROUP BY 
        u1.FIRST_NAME,
        u1.LAST_NAME,
        u1.id,
        ww1.DOMAIN_ID,
        dm.DESCRIPTION
       ) j4
on 
j4.ID = u.ID

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基本上，您希望添加以下内容：

o1.DATE between :param_from and :param_to

在每个“订单”子查询中<代码>：符号是oracle参数的标准，但参数的绑定方式取决于执行查询所使用的环境。因此，请写下您使用的环境/工具

您可以尝试简化查询（我希望我没有犯任何语法错误，我是在记事本中写的…）：

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非常感谢您的回复。我正在使用dbvisualizer执行sql。我明白你的意思了，好吧，我明天回到办公室后会对此进行破解，并进行后续更新。在这个网站的变量部分，你可以找到关于如何在dbvisualizer中绑定参数的描述：它说你应该使用

${notation}$

，所以您的参数行应该是这样的：

o1.DATE介于to_DATE（${param_from}$，'YYYY-MM-DD'）和to_DATE（${param_to}$，'yyyyy-MM-DD'）

（我建议使用

to_DATE

函数，这样您就可以明确指定日期格式）。

select 
    ASSIGNED_USER, 
    UID, 
    count(AREA1) TOTAL_AREA1, 
    count(1) TOTAL,
    count(OPENED) TOTAL_OPENED,
    count (RETURNED) TOTAL_RETURNED
from
    (
    select 
        u1.id UID,
        u1.FIRST_NAME || ' ' || u1.LAST_NAME as ASSIGNED_USER,
        case when dm.CODE='AREA1' then 1 else null end AREA1,
        case when ww1.STATUS_CODE='S_ORD_CA_021' then 1 else null end OPENED,
        case when ww1.STATUS_CODE in 
          ('S_ORD_CA_015', 'S_ORD_CA_016', 'S_ORD_CA_017','S_ORD_CA_018') then 1
            else null end RETURNED
    from users u1
        left outer join WORKFLOW_WORKITEM ww1 on AND ww1.ASSIGNED_TO = U1.ID
            AND ww1.ENTITY_NAME = 'Order'
        left outer join orders o1 on o1.ORDER_KEY = ww1.ENTITY_KEY_NUM
        left outer join domains dm on ww1.DOMAIN_ID=dm.ID
    where 
        o1.DATE between :param_from and :param_to
        -- you can add any other conditions that may 
        -- cut number of selected records
        -- to minimum required to get expected results
    )
group by UID, ASSIGNED_USER;