第一步，从表中取出汇率数据
SELECT * FROM TCURR WHERE KURST = 'M' AND TCURR = 'CNY' INTO TABLE @DATA(LT_HL) .
SORT LT_HL BY GDATU .
第二步，根据日期和币别读表计算汇率
IF GS_VBRP-WAERK <> 'CNY'.
DATA LV_GDATU TYPE GDATU_INV .
DATA(LV_BUDAT2) = LS_LIKP_HL-WADAT_IST(6) && '01' .
LV_GDATU = 99999999 - LV_BUDAT2 .
READ TABLE LT_HL WITH KEY FCURR = GS_VBRP-WAERK GDATU = LV_GDATU INTO DATA(LS_HL2) .
IF SY-SUBRC = 0.
LV_BUDAT_HL = LS_HL2-UKURS .
ENDIF.
ELSE .
LV_BUDAT_HL = '1' .
ENDIF.
ELSE .
READ TABLE LT_BKPF WITH KEY AWKEY = GS_VBRP-VBELN INTO DATA(LS_BKPF2) .
IF SY-SUBRC = 0.
LV_BUDAT_HL = LS_BKPF2-KURSF .
ENDIF.
ENDIF.