ABAP/4 ОКМ ДМ экономическая информатика 4GL Теория и практика обработки информации

Компьютерный язык ABAP/4 - ключевые слова

READ - Read a database table

Basic form

READ TABLE dbtab.

Additions

1. ... SEARCH FKEQ
2. ... SEARCH FKGE
3. ... SEARCH GKEQ
4. ... SEARCH GKGE
5. ... WITH KEY key
6. ... VERSION vers

Note

This variant is no longer maintained and should therefore not be used (see also obsolete lanuguage elements ). Please use a SELECT (SINGLE) statement instead.

Effect

Accesses the database table dbtab
The table dbtab must be declared under TABLES in the program. dbtab is a table name which begins with "T" and comprises no more than five characters altogether.
You must fill the argument fields of the table first; then you can use READ TABLE to make direct access to the table entry.

Example

Declare table:


TABLES T006.

Fill argument fields:


MOVE: '001'  TO T006-MANDT,
      'STD'  TO T006-MSEHI.

Access:


READ TABLE T006.

Process fields:


WRITE T006-DIMID.

Addition 1

... SEARCH FKEQ Full Key Equal (Default)

Addition 2

... SEARCH FKGE Full Key Greater or Equal

Addition 3

... SEARCH GKEQ Generic Key Equal

Addition 4

... SEARCH GKGE Generic Key Greater or Equal

Effect

Access table using one of the above search methods.

Note

You can only specify one of the additions 1 - 4

Addition 5

... WITH KEY key

Effect

Access table with the key key .

Addition 6

... VERSION vers

Note

You should use this addition only if absolutely necessary. In some cases, it is possible (and it makes sense) to avoid this READ addition by using a generation program.

Effect

Specifies a dynamically definable table name. The field vers must be a 4-character C field which contains the table name. It is generally declared under PARAMETERS and evaluated at runtime.
The entry read is always made available in the permanently assigned table T...

The return code value of SY-SUBRC specifies whether a suitable entry was found:

SY-SUBRC = 0 Entry found
SY-SUBRC <> 0 Entry not found
If the entry is not found, the system automatically sets the function part of the table entry to SPACE .

Index
© SAP AG 1996

ABAP/4 ОКМ ДМ экономическая информатика 4GL Теория и практика обработки информации

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