Интересно, почему почему даты в поле GDATU хранятся в закодированном виде? И есть ли какие либо ФМ для работы с такими датами?

Inverted Dates

In some cases (for example, when sorting dates in descending order), it is useful to convert a date from format D to an inverted date by using the keyword CONVERT.

CONVERT DATE <d1> INTO INVERTED-DATE <d2>.

Afterwards, you can convert the inverted data back into a normal date using the statement

CONVERT INVERTED-DATE <d1> INTO DATE <d2>.

These statements convert the field <d1> from the formats DATE or INVERTED-DATE to the formats INVERTED-DATE or DATE and assign it to the field <d2>.

For the conversion, ABAP forms the nine's complement.



DATA: ODATE TYPE D VALUE '19955011',
IDATE LIKE ODATE.

DATA FIELD(8).

FIELD = ODATE. WRITE / FIELD.

CONVERT DATE ODATE INTO INVERTED-DATE IDATE.

FIELD = IDATE. WRITE / FIELD.

CONVERT INVERTED-DATE IDATE INTO DATE ODATE.

FIELD = ODATE. WRITE / FIELD.

Output:

80049488

19955011

19955011

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