In ABAP code, a count (*) it is determined whether there is a field value in the table, it is not added into the.
The following code example, in determining whether the purchase order EKKO present, so little definition of a variable. . . Lazy one word. . . .
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REPORT ztest_countlines.
PARAMETERS:p_ebeln TYPE ekko-ebeln.
SELECT COUNT(*)
FROM ekko
WHERE ebeln = p_ebeln.
IF sy-subrc = 0.
WRITE: '存在'.
ELSE.
WRITE:'不存在'.
ENDIF.
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the above.