06ABAP流程控制

Page 1 Page 2 IF X=5.IF X=5.WRITE:/The value of X is 5.WRITE:/The value of X is 5.ELSEIF X=6.ELSEIF X=6.WRITE:/The value of X is 6.WRITE:/The value of X is 6.ELSE.ELSE.WRITE:/X is neither 5 nor 6.WRITE:/X is neither 5 nor 6.ENDIF.ENDIF.Page 3 逻辑表达语句的应用逻辑表达语句的应用 :关系表达式关系表达式 逻辑操作逻辑操作 字符串操作字符串操作Page 4 比较关系比较关系 语法语法等于等于=,EQ=,EQ不等于不等于 ,NE,GT,GT大于等于大于等于 =,=,GE=,=,GE小于小于,LT,LT小于等于小于等于 =,=,LE=,=,LEPage 5 ANDANDORORNOTNOTPage 6 If not(X=0)If not(X=0)or not(Y=1 andor not(Y=1 andZ=X or X=3Z=X or X=3and(Z=5)and(Z=5)Page 7 比较关系比较关系语法语法只包含只包含包含任何一个包含任何一个包含字符串包含字符串包含模式包含模式不止包含不止包含不包含任何一个不包含任何一个不包含字符串不包含字符串不包含模式不包含模式COCOCACACSCSCPCPCNCNNANANSNSNPNPPage 8 CASECASESY-UCOMM.SY-UCOMM.WhenSAVE.WhenWhenSRTD.SRTD.WhenPICK.WhenGETD.WhenSRTA.Page 9 DO.DO.WRITE:/Hello WRITE:/Hello world!.world!.ENDDO.ENDDO.J=4.J=4.DO J TIMES.DO J TIMES.WRITE:/Hello WRITE:/Hello world!.world!.ENDDO.ENDDO.Page 10 如果表达式为真如果表达式为真,执行循环执行循环内语句内语句 如果表达式不为真如果表达式不为真,则不执则不执行循环内语句行循环内语句 且控制权跳且控制权跳到到ENDWHILEENDWHILE后后.Page 11 DO 2 TIMES.DO 2 TIMES.WRITE:/SY-INDEX.WRITE:/SY-INDEX.DO 3 TIMES.DO 3 TIMES.WRITE:/,SY-INDEX.WRITE:/,SY-INDEX.ENDDO.ENDDO.ENDDO.ENDDO.Page 12 SELECT SELECT*FROM YCUSTOMER.FROM YCUSTOMER.ON CHANGE OF YCUSTOMER-COUNTRY ON CHANGE OF YCUSTOMER-COUNTRY OR OR YCUSTOMER-STATE.YCUSTOMER-STATE.ENDON.ENDON.ENDSELECT.ENDSELECT.Page 13 DO 10 TIMES.DO 10 TIMES.CHECK SY-INDEX=4.CHECK SY-INDEX=4.WRITE:/SY-INDEX.WRITE:/SY-INDEX.ENDDO.ENDDO.Page 14 IF SY-SUBRC 0.IF SY-SUBRC 0.EXIT.EXIT.ENDIF.ENDIF.Page 15 DO 10 TIMES.DO 10 TIMES.IF SY-INDEX 4.IF SY-INDEX 4.CONTINUE.CONTINUE.ENDIF.ENDIF.WRITE:/SY-INDEX.WRITE:/SY-INDEX.ENDDO.ENDDO.Page 16 演讲完毕，谢谢观看！