在SQL中创建组作为占位符

Question

我有一个要在SSRS报告中显示的数据集。 这是数据：

Board   TicketGroup TicketType  TicketCnt
Support Closed      Closed      79
Support Closed      FCR         13
Support Open        Open        12
Support Submitted   Submitted   91

我想在条形图中显示数据，如下所示：

我不确定是否可以使用当前查询并配置SSRS报告来显示这样的组。但是，如果我可以创建查询，以便像这样返回组：

Board   TicketGroup TicketType  TicketCnt
    Support Closed      Closed      79
    Support Closed      FCR         13
    Support Closed      Open        0
    Support Closed      Submitted   0
    Support Open        Open        12
    Support Open        Closed      0
    Support Open        FCR         0
    Support Open        Submitted   0
    Support Submitted   Submitted   91
    Support Submitted   Open        0
    Support Submitted   Closed      0
    Support Submitted   FCR         0

使用这些数据，我可以创建一个不显示0值的图表。

Answer 1

您需要一堆cross join来生成董事会，故障单组和故障单类型的所有组合，然后将其与您的桌子联系起来：

select b.board,
    g.ticketGroup,
    t.ticketType,
    coalesce(t2.ticketCnt, 0) as ticketCnt
from (
    select distinct board
    from your_table
    ) b
cross join (
    select distinct ticketGroup
    from your_table
    ) g
cross join (
    select distinct ticketType
    from your_table
    ) t
left join your_table t2 on b.board = t2.board
    and g.ticketGroup = t2.ticketGroup
    and t.ticketType = t2.ticketType;