1. Unit 8 Search Help 、 Unit 7 Views
BC430 ABAP Dictionary
Unit 8 Search Help 、 Unit 7 Views

2. 1. Search Help

3. Input Help Requirements

4. Search Help
決定由哪個table或 view 找資料
(1)
(2)

5. Search Help

6. Selection Method of a Search Help

7. Description of the Dialog Behavior

8. Interface of a Search Help

9. Search Help IMPORT (IMP)： screen上的值會作為一個限制條件，加入到 search help中
EXPORT (EXP)：
哪些欄位需要
返回值

10. Search Help search help 可放至 1. Table field 2. check table
3. data element

11. Search Help
若有好幾個search help，由左而右決定優先順序 1 2 3

12. Search Help 2. Collective search help：
把幾個 elementary search help 組合在一起

13. View as Selection Method of a Search Help

14. 2. Views

15. Example: Structure of a View

16. (1) Join Condition
多餘的欄位

17. (2) Field Selection (Projection)

18. (3) Selection Condition

19. How are Tables linked to Views?

20. Structure of the View

21. Data Selection with Views (Open SQL)

22. Data Selection with Views
You would get the same result using an Inner Join:
SELECT C~CARRID C~CARRNAME P~CONNID P~CITYFROM P~CITYTO F~FLDATE F~SEATSMAX F~SEATSOCC
INTO TABLE ITAB_FLIGHTS
FROM ( SCARR AS C INNER JOIN SPFLI AS P
ON C~CARRID = P~CARRID )
INNER JOIN SFLIGHT AS F
ON F~CARRID = P~CARRID
AND F~CONNID = P~CONNID
WHERE CITYFROM IN SO_CITYF
AND CITYTO IN SO_CITYT
AND SEATSOCC < F~SEATSMAX
ORDER BY C~CARRID P~CONNID F~FLDATE.

23. Inner and Outer Join

24. The Different Types and Usage of Views
Database View
are implement an inner join
that is, only records of the primary table (selected via the join operation) for which the corresponding records of the secondary tables also exist are fetched.
Maintenance View
are implement an outer join
Data from several tables can be summarized in a maintenance view and maintained collectively via this view.
That is, the data is entered via the view and then distributed to the underlying tables by the system.

25. 2.1 Database Views

26. Dynamic attachment of table fields in database views
You can include entire tables in database views.
In this case all the fields of the included table become fields of the view.
If new fields are included in the table or existing fields are deleted, the view is automatically adjusted to this change.
A new or deleted field is therefore automatically included in the view or deleted from it.

27. Dynamic attachment of table fields in database views

28. 2.2 Maintenance Views
Data that is distributed on more than one table often forms a logical unit (application object)
The user usually is not interested in the technical implementation, such as the distribution of the data on several tables.
You should be able to display, change and create the data of such an application object together.
You can maintain complex application objects in a simple way using a maintenance view.
The data is automatically distributed on the underlying database tables.

29. 2.2 Maintenance Views

30. Maintenance view