Question

I pull from three tables: A, B and C.

B and C reference A using a foreign key, so there is a 1-n relationship between A and B, and between A and C. Furthermore, there can be multiple matching records in A. So the data could look something like this:

A(1) --> B(1), B(2), ... B(n)
       --> C(1), C(2), ... C(n)

A(2) --> B(1), B(2), B(3), ... B(n)
       --> C(1), C(2), C(3), ... C(n)
.
.
.
A (n) --> B(1), B(2), B(3), ... B(n)
       --> C(1), C(2), C(3), ... C(n)

I want records from A as the outermost group, then from B as inner groups at the same level, one after another. So the report should look something like this:

Table A Record 1

  (Data distributed out into several rows)

  Table B Record 1
  Table B Record 2 ...
  Table B Record n

  Table C Record 1
  Table C Record 2 ...
  Table C Record n

Creating three groups will not work because they are always nested, so I cannot display B and C at the same level. (C will get nested inside B.) I cannot create 2 subreports for B and C because the entire thing is a subreport

How can I proceed?

Answer 1

加入并联合你的表并使用第二级的组，只打印所需的组。

TableA left outer join TableB
union all
TableA left outer join TableC

会产生类似

的记录

A(1), B(1)
A(1), B(2)
A(1), B(3)
A(1), C(1)
A(1), C(2)
A(2), B(1)
A(2), B(2)
A(2), C(1)

在同一级别为B和C创建一个论坛，并在没有记录时禁止它们（例如B.Id is null）

Group for A
    Group for B
    Group for C

Multiple groupings at the same level

1 个答案: