ABAP MEMORY AND SAP MEMORY

ABAP MEMORY-It uses export and import parameters when an active internal session 

calls another internal session within a single main session .

SAP MEMORY- It uses set and get parameters to pass the data from one main session to another main session. 

*****ABAP MEMORY - with export and import parameters*******

REPORT  YSP_0136.

data : name1(10) type c value 'aaaaaaaaaa'.
export name1 to memory id 'MEM1'.
SUBMIT YSP_0137 AND RETURN.
WRITE 'SSSSSSSS'.
***************************************************
REPORT  YSP_0137                                                    .

DATA : NAME2(10) TYPE C.

IMPORT NAME1 TO NAME2 FROM MEMORY ID 'MEM1'.
WRITE NAME2.

*****ABAP MEMORY - with export and import parameters*******

REPORT ZPGM1.
data : text1 type char20 value 'export and import'.

export text1
       text2 from 'ex and im' to memory id 'MEM'.

SUBMIT ZPGM2 AND RETURN.

REPORT ZPGM2.
DATA : T1 TYPE CHAR20.
DATA : T2 TYPE CHAR20.
IMPORT TEXT1 TO T1 FROM MEMORY ID 'MEM'.
IMPORT TEXT2 TO T2 FROM MEMORY ID 'MEM'.
WRITE :/ T1.
WRITE :/ T2.

*************OUTPUT **************
export and import
ex and im 

****ABAP MEMORY - with export and import parameters*******

data : t1 type char15 value  'ex and im'.

export t1 to memory id 'mem'.
t1 = 'xxxxxxxxxx'.
write :/ sy-subrc , t1.
import t1 from memory id 'mem'. " or free memory.
write :/ sy-subrc , t1.
t1 = 'xxxxxxxxxx'.
free memory id 'mem'.
import t1 from memory id 'mem'.
write :/ sy-subrc , t1.

*************output of program ****************

   0  xxxxxxxxxx
   0  ex and im
   4  xxxxxxxxxx

*****ABAP MEMORY - with export and import parameters *******

data : text(10) value '0123456789',
       iden(3) value 'xyz'.

export text to memory id iden.

text = 'xxxxxxxxxx'.

import text from memory id iden.
write :/ sy-subrc, text.

free memory . " free memory id iden.
text = 'xxxxxxxxxx'.
import text from memory id iden.
write :/ sy-subrc, text.

******SAP MEMORY - with set and get parameters********* 

REPORT  YSP_0138                                .

DATA TEXT1(30) TYPE C VALUE 'SET AND GET PARAMETER'.
SET PARAMETER ID 'MEM' FIELD TEXT1.

WRITE : 'SET PARAMETER'.
*************************************************
REPORT  YSP_0139                                .
DATA TEXT2(30) TYPE C .
GET PARAMETER ID 'MEM' FIELD TEXT2.
WRITE : / TEXT2.
WRITE : 'GET PARAMETER'. 

DB TABLE OPERATIONS

This post contains all database table operations- like select, insert, update, modify , collect ,  inner-join, left-outer-join, for all entries ....

******DB TABLE OPERATION-   SELECT - ENDSELECT ******

TYPES : BEGIN OF TAB,
         ROLL_NO TYPE ZEMP-REGD_NO,
         NAME TYPE ZEMP-NAME,
         ADDRESS TYPE ZEMP-ADDRESS,
         STATE TYPE ZEMP-STATE,
         COUNTRY TYPE  ZEMP-COUNTRY,
         END OF TAB.

   DATA : WA_TAB TYPE  TAB.
     SELECT REGD_NO
            NAME
            ADDRESS
            STATE
            COUNTRY FROM ZEMP INTO  WA_TAB.
     WRITE :/ WA_TAB-ROLL_NO,
              WA_TAB-NAME,
              WA_TAB-ADDRESS,
              WA_TAB-STATE,
              WA_TAB-COUNTRY.
  ENDSELECT.

****DB TABLE OPERATION-   SELECT *  STATEMENT********

  TYPES : BEGIN OF TAB.
         INCLUDE STRUCTURE ZEMP.
  TYPES : END OF TAB.

   DATA : IT_TAB TYPE TABLE OF TAB.
   DATA : WA_TAB TYPE  TAB.

   SELECT * FROM ZEMP INTO TABLE IT_TAB.

   LOOP AT IT_TAB INTO WA_TAB.
     WRITE :/ WA_TAB-REGD_NO,
              WA_TAB-NAME,
              WA_TAB-ADDRESS,
              WA_TAB-STATE,
              WA_TAB-COUNTRY,
              WA_TAB-MOBILE_NO,
              WA_TAB-BRANCH,
              WA_TAB-MARK,
              WA_TAB-GRADE.
     ENDLOOP. 

********** single record selection without condition *********
data wa type spfli.
select single carrid connid cityfrom cityto into corresponding fields
                                                    of wa from spfli.

if sy-subrc = 0.
write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
endif. 

********** single record selection with condition *********
data wa type spfli.
select single carrid connid cityfrom cityto into corresponding fields
                                 of wa from spfli where carrid = 'LH'.

if sy-subrc = 0.
write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
endif. 

***** single record selection with condition 'AND'******
data wa type spfli.
select single carrid connid cityfrom cityto into corresponding fields
              of wa from spfli where carrid = 'LH' and connid = '0400'.

if sy-subrc = 0.
write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
endif.

********multiple line selection without condition ***********
data : itab type standard table of spfli,
       wa like line of itab.

  select carrid connid cityfrom cityto into corresponding fields of
                                             table itab from spfli .

  loop at itab into wa.

  write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
  endloop.

********multiple line selection with condition *************
data : itab type standard table of spfli,
       wa like line of itab.

  select carrid connid cityfrom cityto into corresponding fields of
                          table itab from spfli where carrid = 'LH'.

  loop at itab into wa.

  write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
  endloop.

*********multiple line selection with condition 'AND'*****
data : itab type standard table of spfli,
       wa like line of itab.

  select carrid connid cityfrom cityto into corresponding fields of
       table itab from spfli where carrid = 'LH' and connid = '5002'.

  loop at itab into wa.

  write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
  endloop.

******multiple line selection with condition 'OR'*****
data : itab type standard table of spfli,
       wa like line of itab.

  select carrid connid cityfrom cityto into corresponding fields of
          table itab from spfli where carrid = 'LH' or carrid = 'AA'.

  loop at itab into wa.

  write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
  endloop.

******multiple line selection with condition 'OR'and 'AND'*****
data : itab type standard table of spfli,
       wa like line of itab.

  select carrid connid cityfrom cityto into corresponding fields of
  table itab from spfli where carrid = 'LH' or carrid = 'AA' and
                                               connid = '0064'.

  loop at itab into wa.

  write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
  endloop.


*****multiple line selection with condition 'OR'and 'AND'*****
data : itab type standard table of spfli,
       wa like line of itab.

select carrid connid cityfrom cityto into corresponding fields of
     table itab from spfli where carrid = 'LH' and connid = '5002'
                              or carrid = 'AA' and connid = '0064'.

  loop at itab into wa.

  write :/ wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
  endloop.

***reading all columns of a table  using workarea*********
data : wa type spfli.

select * from spfli into wa. " give condition if needed
write :/ sy-dbcnt, wa-carrid, wa-connid.
endselect.

***reading all columns of a table  using internal table*********
data : itab  type table of spfli,
       wa like line of itab.

select * from spfli into table itab. " give condition if needed

if sy-subrc = 0.
loop at itab into wa.
write :/ sy-dbcnt, wa-carrid, wa-connid.
endloop.
endif.

***********single field as target *************

data : avg type p decimals 2,
       total type p decimals 2.

select avg( luggweight ) sum( luggweight )
            into (avg, total) from sbook.

  if sy-subrc = 0.
  write :/ 'average luggweight = ', avg left-justified,
         / 'total luggweight =', total.

  endif.


*********single field as target with condition *********

data : avg type p decimals 2,
       total type p decimals 2.

select avg( luggweight ) sum( luggweight )
         into (avg, total) from sbook where carrid = 'LH'.

  if sy-subrc = 0.
  write :/ 'average luggweight = ', avg left-justified,
         / 'total luggweight =', total.
  endif.

******using aliases to calculate avg and sum ********

data : begin of result,
       average type p decimals 2,
       total   type p decimals 2,
       end of result.

 select avg( luggweight ) as average sum( luggweight ) as total
                                         into result from sbook.

 if sy-subrc = 0.
  write :/ 'average luggweight = ', result-average left-justified,
         / 'total luggweight =', result-total.
 endif.

**********distinct statement ****************

 data : wa type spfli,
        itab like table of wa.

select cityfrom cityto into corresponding fields of table itab from spfli.
select distinct cityfrom cityto into corresponding fields of table itab from spfli.
 

write :/ sy-dbcnt.
 

if sy-subrc = 0.
loop at itab into wa.
write :/  wa-cityfrom, wa-cityto.
endloop.
endif.

*********specifying columns dynamically**************

data : itab type table of  spfli,
        wa like line of itab.

data : line type char72,
       list like table of line.

line = 'CITYFROM '.
append line to list.
line = 'CITYTO '.
append line to list.

select distinct (list) into corresponding fields of table itab from
spfli.

if sy-subrc = 0.
  loop at itab into wa.
    write :/ wa-cityfrom, wa-cityto.
  endloop.
endif.

*******specifying columns(only one) dynamically  *******
PARAMETERS : P_CITYFR TYPE char72. " INPUT- CITYFROM CITYTO

DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.

SELECT DISTINCT (P_CITYFR) INTO CORRESPONDING FIELDS OF TABLE
ITAB FROM SPFLI.

IF SY-SUBRC = 0.
  LOOP AT ITAB INTO WA.
    WRITE :/ WA-CITYFROM , wa-cityto.
  ENDLOOP.
ENDIF.

********SPECIFYING SINGLE FIELD AS TARGET********

DATA : CARR TYPE SPFLI-CARRID,
       CONN TYPE SPFLI-CONNID.

 SELECT CARRID CONNID INTO (CARR,CONN) FROM SPFLI.

 WRITE :/ CARR, CONN.
 ENDSELECT.

****SPECIFYING TARGET SAME AS DBTABLE*****

DATA : SPFLI TYPE SPFLI.

* SELECT * FROM SPFLI INTO SPFLI.
SELECT * FROM SPFLI .
WRITE :/ SPFLI-CARRID, SPFLI-CONNID, SPFLI-CITYFROM, SPFLI-CITYTO.
ENDSELECT.

****SPECIFYING TARGET TABLE  SAME AS DBTABLE*****

DATA : SPFLI TYPE TABLE OF SPFLI,
       WA LIKE LINE OF SPFLI.
SELECT * FROM SPFLI INTO TABLE SPFLI.

LOOP AT SPFLI INTO WA.
WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
ENDLOOP.

**SPECIFYING TABLE NAME STATICALLY AND DYNAMICALLY ******
PARAMETERS : NAME TYPE DD02L-TABNAME.
DATA : ITAB TYPE TABLE OF SPFLI.
DATA : WA LIKE LINE OF ITAB.

SELECT * FROM (NAME) INTO TABLE ITAB. " ONLY WORKS FOR SPFLI TABLE AS
                                       " ITAB IS OF TYPE SPFLI

LOOP AT ITAB INTO WA.
WRITE :/ WA-CARRID, WA-CONNID.
ENDLOOP.

********RESTRICTING NUMBER OF LINES *****************
DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.

 SELECT * FROM SPFLI INTO TABLE ITAB UP TO 20 ROWS.

 LOOP AT ITAB INTO WA.
 WRITE :/ WA-MANDT,
          WA-CARRID,
          WA-CONNID,
          WA-CITYFROM,
          WA-CITYTO.
 ENDLOOP.

*********BYPASSING BUFFER ************

DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.
 SELECT * FROM SPFLI BYPASSING BUFFER INTO TABLE ITAB.
  LOOP AT ITAB INTO WA .
  WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
  ENDLOOP.

***********VALUES IN INTERVALS***************

DATA : ITAB TYPE TABLE OF SFLIGHT,
       WA LIKE LINE OF ITAB.

 SELECT * FROM SFLIGHT INTO TABLE ITAB WHERE SEATSOCC BETWEEN 100 AND
                                                              200.
 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-SEATSMAX, WA-SEATSOCC.
 ENDLOOP.


*******VALUES NOT IN INTERVALS******

DATA : ITAB TYPE TABLE OF SFLIGHT,
       WA LIKE LINE OF ITAB.

 SELECT * FROM SFLIGHT INTO TABLE ITAB WHERE SEATSOCC NOT BETWEEN 100
                                                              AND 200.
 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-SEATSMAX, WA-SEATSOCC.
 ENDLOOP.

*****COMAPIRING STRINGS************

DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.

 SELECT * FROM SPFLI INTO TABLE ITAB WHERE CITYFROM LIKE 'S%'.
                        " CITYFROM STARTS WITH 'S', %-WILDCARD

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP.

  REFRESH ITAB.

 SELECT * FROM SPFLI INTO TABLE ITAB WHERE CITYFROM LIKE '%R%'.
                           " CITYFROM CONTAINS  'R', %-WILDCARD

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP.

  REFRESH ITAB. 

 SELECT * FROM SPFLI INTO TABLE ITAB WHERE CITYFROM LIKE '%O'.
                      " CITYFROM ENDWITH WITH 'O', %-WILDCARD

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP.

 SELECT * FROM SPFLI INTO TABLE ITAB WHERE CITYFROM NOT LIKE '%O'.
                         " CITYFROM NOT ENDS WITH 'O', %-WILDCARD

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP.

  REFRESH ITAB. 

 SELECT * FROM SPFLI INTO TABLE ITAB WHERE CITYFROM  LIKE '_O%'.
                     " CITYFROM SECOND CHARAC IS 'O', %-WILDCARD

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP. 

********CHECKING LIST OF VALUES ****************
DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.

SELECT * FROM SPFLI INTO TABLE ITAB  WHERE CITYTO IN ('TOKYO','ROME').
* SELECT * FROM SPFLI INTO TABLE ITAB  WHERE CITYTO NOT IN ('TOKYO', 'ROME').

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP.

******CHECKING NULL VALUES ************

DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.

SELECT * FROM SPFLI INTO TABLE ITAB  WHERE CITYTO IS  NULL.
* SELECT * FROM SPFLI INTO TABLE ITAB  WHERE CITYTO IS NOT  NULL.

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP. 

*********NEGATING CONDITION **********
DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB.

SELECT * FROM SPFLI INTO TABLE ITAB  WHERE NOT CITYTO = 'SAN FRANCISCO'.

 WRITE :/ 'TOTAL RECORDS PROCESSED =',SY-DBCNT.
 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM, WA-CITYTO.
 ENDLOOP. 

**DB TABLE OPERATION- INSERT FROM WORKAREA TO DB TABLE*** 
   DATA : WA_TAB TYPE ZEMP.

   WA_TAB-REGD_NO = '106'.
   WA_TAB-NAME = 'RAM'.
   WA_TAB-ADDRESS = 'J PUR'.
   WA_TAB-STATE = 'DELHI'.
   WA_TAB-COUNTRY = 'USA'.
   INSERT INTO ZEMP_022 VALUES WA_TAB.

   WA_TAB-REGD_NO = '107'.
   WA_TAB-NAME = 'HARI'.
   WA_TAB-ADDRESS = 'JA PUR'.
   WA_TAB-STATE = 'DELHI'.
   WA_TAB-COUNTRY = 'USA'.
   INSERT INTO ZEMP_022 VALUES WA_TAB.

   IF SY-SUBRC = 0.
     WRITE :/ 'RECORD SUCCESSFULLY INSERTED.'.
   ENDIF. 

*******************************************
TABLES : ZEMP. " THIS STATEMENT ALSO CREATES A WORK AREA WITH SAME NAME AS THE DB TABLE
ZEMP-REGD_NO = '111'.
ZEMP-NAME = 'SSSS'.
ZEMP-ADDRESS = 'BANGA'.
ZEMP-STATE = 'KARN'.
ZEMP-COUNTRY = 'IND'.

INSERT INTO ZEMP VALUES ZEMP.
IF SY-SUBRC = 0.
  WRITE : 'SUCCESSFULLY INSERTED'.
 ENDIF.

*DB TABLE OPERATION- INSERT FROM INTERNAL TABLE TO DB TABLE*

 DATA : IT_TAB TYPE TABLE OF ZEMP,
        WA_TAB TYPE ZEMP.

WA_TAB-REGD_NO = '130'.
WA_TAB-NAME  = 'AJAY'.
WA_TAB-ADDRESS = 'K PUR'.
WA_TAB-STATE = 'DELHI'.
WA_TAB-COUNTRY = 'IND'.
APPEND WA_TAB TO IT_TAB.

WA_TAB-REGD_NO = '131'.
WA_TAB-NAME  = 'BIJAY'.
WA_TAB-ADDRESS = 'KR PUR'.
WA_TAB-STATE = 'UP'.
WA_TAB-COUNTRY = 'IND'.
APPEND WA_TAB TO IT_TAB.

WA_TAB-REGD_NO = '132'.
WA_TAB-NAME  = 'RAK'.
WA_TAB-ADDRESS = 'JAJ'.
WA_TAB-STATE = 'AP'.
WA_TAB-COUNTRY = 'IND'.
APPEND WA_TAB TO IT_TAB.

WA_TAB-REGD_NO = '134'.
WA_TAB-NAME  = 'HARI'.
WA_TAB-ADDRESS = 'MM PUR'.
WA_TAB-STATE = 'BIHAR'.
WA_TAB-COUNTRY = 'IND'.
APPEND WA_TAB TO IT_TAB.

INSERT  ZEMP FROM  TABLE IT_TAB.
IF SY-SUBRC = 0.
  WRITE :/ 'INSERTED'.

ENDIF.

*DB TABLE OPERATION- CLIENT SPECIFIC INSERT INTO DB TABLE*

data: wa_tab type zemp.
wa_tab-mandt = '400'.
wa_tab-regd_no = '152'.
wa_tab-name = 'raj'.
wa_tab-address = 'yash'.
wa_tab-state = 'wb'.
wa_tab-country = 'ind'.

insert into zemp client specified   values wa_tab .
 if sy-subrc = 0.
  write :/ 'client specific record insert successful'

 elseif sy-subrc = 4.
    write :/ 'failed'.
 endif.

 clear wa_tab.
 select single * into wa_tab from zemp client specified where mandt = '400'.
      if sy-subrc = 0.
        write :/ 'selection of record successful'.
        write :/ wa_tab-mandt,
                 wa_tab-regd_no,
                 wa_tab-name,
                 wa_tab-address,
                 wa_tab-state,
                 wa_tab-country.
      elseif sy-subrc = 4.

     endif.  

*****DB TABLE OPERATION- MODIFY STATEMENT**** 

data : wa_tab type zemp.
wa_tab-regd_no = '120'.
wa_tab-name = 'RAM'.
wa_tab-address = 'sale'.
wa_tab-state = 'pensyl'.
wa_tab-country = 'usa'.
modify zemp from wa_tab.
if sy-subrc = 0.
  write :/ 'modification successful'.

endif.

 ****DB TABLE OPERATION- DELETE  STATEMENT****** 

 DATA : WA_TAB TYPE ZEMP.
 DATA : it_TAB TYPE TABLE OF ZEMP.

WA_TAB-REGD_NO = '130'.
WA_TAB-NAME = 'HHHH'.
WA_TAB-ADDRESS = 'CTCT'.
WA_TAB-STATE = 'DELHI'.
WA_TAB-COUNTRY = 'IND'.
append wa_tab to it_tab.

WA_TAB-REGD_NO = '131'.
WA_TAB-NAME = 'HARI'.
WA_TAB-ADDRESS = 'CTCT'.
WA_TAB-STATE = 'DELHI'.
WA_TAB-COUNTRY = 'IND'.
append wa_tab to it_tab.

DELETE  ZEMP from table it_tab.
IF sy-subrc = 0.
write :/ ' records deleted'.
ENDIF.

** INNER JOIN ON SPFLI AND SFLIGHT TABLES**********
PARAMETERS : P_CARRID TYPE SPFLI-CARRID DEFAULT 'AA'.
PARAMETERS : P_CONNID TYPE SPFLI-CONNID DEFAULT '0017'.
TYPES : BEGIN OF TAB,
        CARRID TYPE SPFLI-CARRID,
        CONNID TYPE SPFLI-CONNID,
        COUNTRYFR TYPE SPFLI-COUNTRYFR,
        CITYFROM TYPE SPFLI-CITYFROM,
        AIRPFROM TYPE SPFLI-AIRPFROM,
        COUNTRYTO TYPE SPFLI-COUNTRYTO,
        CITYTO TYPE SPFLI-CITYTO,
        AIRPTO TYPE SPFLI-AIRPTO,
        DISTANCE TYPE SPFLI-DISTANCE,
        FLDATE TYPE SFLIGHT-FLDATE,
        PRICE TYPE SFLIGHT-PRICE,
        SEATSMAX TYPE SFLIGHT-SEATSMAX,
        SEATSOCC TYPE SFLIGHT-SEATSOCC,
      END OF TAB.

DATA : IT_FLIGHT TYPE TABLE OF TAB,
       WA_FLIGHT TYPE TAB.

SELECT SPFLI~CARRID
       SPFLI~CONNID
       SPFLI~COUNTRYFR
       SPFLI~CITYFROM
       SPFLI~AIRPFROM
       SPFLI~COUNTRYTO
       SPFLI~CITYTO
       SPFLI~AIRPTO
       SPFLI~DISTANCE
       SFLIGHT~FLDATE
       SFLIGHT~PRICE
       SFLIGHT~SEATSMAX
       SFLIGHT~SEATSOCC
       INTO TABLE IT_FLIGHT
       FROM SPFLI INNER JOIN SFLIGHT
       ON SPFLI~CARRID = SFLIGHT~CARRID AND SPFLI~CONNID = SFLIGHT~CONNID
       WHERE SPFLI~CARRID = P_CARRID AND SPFLI~CONNID = P_CONNID.

  LOOP AT IT_FLIGHT INTO WA_FLIGHT.
    WRITE :/ SY-TABIX,
             WA_FLIGHT-CARRID,
             WA_FLIGHT-CONNID,
             WA_FLIGHT-COUNTRYFR,
             WA_FLIGHT-CITYFROM ,

             WA_FLIGHT-COUNTRYTO,
             WA_FLIGHT-CITYTO,

             WA_FLIGHT-DISTANCE,
             WA_FLIGHT-FLDATE,
             WA_FLIGHT-PRICE,
             WA_FLIGHT-SEATSMAX,
             WA_FLIGHT-SEATSOCC.
    ENDLOOP. 

*********** LEFT OUTER  JOIN ******************** 

 PARAMETERS : P_CARRID TYPE SPFLI-CARRID DEFAULT 'AA'.
PARAMETERS : P_CONNID TYPE SPFLI-CONNID DEFAULT '0017'.
TYPES : BEGIN OF TAB,
        CARRID TYPE SPFLI-CARRID,
        CONNID TYPE SPFLI-CONNID,
        COUNTRYFR TYPE SPFLI-COUNTRYFR,
        CITYFROM TYPE SPFLI-CITYFROM,
        AIRPFROM TYPE SPFLI-AIRPFROM,
        COUNTRYTO TYPE SPFLI-COUNTRYTO,
        CITYTO TYPE SPFLI-CITYTO,
        AIRPTO TYPE SPFLI-AIRPTO,
        DISTANCE TYPE SPFLI-DISTANCE,
        FLDATE TYPE SFLIGHT-FLDATE,
        PRICE TYPE SFLIGHT-PRICE,
        SEATSMAX TYPE SFLIGHT-SEATSMAX,
        SEATSOCC TYPE SFLIGHT-SEATSOCC,
      END OF TAB.

DATA : IT_FLIGHT TYPE TABLE OF TAB,
       WA_FLIGHT TYPE TAB.

SELECT SPFLI~CARRID
       SPFLI~CONNID
       SPFLI~COUNTRYFR
       SPFLI~CITYFROM
       SPFLI~AIRPFROM
       SPFLI~COUNTRYTO
       SPFLI~CITYTO
       SPFLI~AIRPTO
       SPFLI~DISTANCE
       SFLIGHT~FLDATE
       SFLIGHT~PRICE
       SFLIGHT~SEATSMAX
       SFLIGHT~SEATSOCC
       INTO TABLE IT_FLIGHT
       FROM SPFLI LEFT OUTER JOIN SFLIGHT
       ON SPFLI~CARRID = SFLIGHT~CARRID AND SPFLI~CONNID = SFLIGHT~CONNID
       WHERE SPFLI~CARRID = P_CARRID AND SPFLI~CONNID = P_CONNID.

  LOOP AT IT_FLIGHT INTO WA_FLIGHT.
    WRITE :/ SY-TABIX,
             WA_FLIGHT-CARRID,
             WA_FLIGHT-CONNID,
             WA_FLIGHT-COUNTRYFR,
             WA_FLIGHT-CITYFROM ,

             WA_FLIGHT-COUNTRYTO,
             WA_FLIGHT-CITYTO,

             WA_FLIGHT-DISTANCE,
             WA_FLIGHT-FLDATE,
             WA_FLIGHT-PRICE,
             WA_FLIGHT-SEATSMAX,
             WA_FLIGHT-SEATSOCC.
    ENDLOOP. 

*******INNER JOIN OF THREE TABLES ***********

DATA : BEGIN OF WA,
       CARRID TYPE SPFLI-CARRID,
       CONNID TYPE SPFLI-CONNID,
       FLDATE TYPE SFLIGHT-FLDATE,
       SEATSOCC TYPE SFLIGHT-SEATSOCC,
       BOOKID TYPE SBOOK-BOOKID,
       END OF WA,
      ITAB LIKE SORTED TABLE OF  WA WITH UNIQUE KEY CARRID CONNID FLDATE BOOKID .

SELECT P~CARRID
       P~CONNID
       Q~FLDATE
       Q~SEATSOCC
       R~BOOKID
  INTO TABLE ITAB
  FROM ( ( SPFLI AS P INNER JOIN SFLIGHT AS Q ON P~CARRID = 

                                             Q~CARRID
                                             AND P~CONNID = Q~CONNID )
                      INNER JOIN SBOOK AS R ON  R~CARRID = Q~CARRID
                                            AND R~CONNID = Q~CONNID
                                            AND R~FLDATE = Q~FLDATE )
   WHERE P~CITYFROM = 'NEW YORK' AND P~CITYTO =

                                                          'SAN FRANCISCO'
                                 AND Q~SEATSMAX > Q~SEATSOCC
                                 AND Q~SEATSOCC < 350.
WRITE :/ SY-DBCNT.
LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-FLDATE, WA-SEATSOCC,WA-BOOKID.
ENDLOOP. 

******GROUP BY- SPECIFYING COLUMN STATICALLY********

*group by clause summarizes several lines  into a single line
data : BEGIN OF WA,
       carrid type sflight-carrid,
       minimum type p decimals 2,
       maximum type p decimals 2,
       END OF WA,
       ITAB LIKE TABLE OF WA.

  select carrid
         min( price )
         max( price )
         into   TABLE ITAB "(carrid, minimum,maximum)
         from sflight group by carrid .

     LOOP AT ITAB INTO WA.
    write : /  WA-carrid , WA-minimum , WA-maximum.
    ENDLOOP.
    endselect.

******HAVING CLAUSE WITH GROUP BY********

data : wa type sflight.
select CARRID CONNID into CORRESPONDING FIELDS OF WA from sflight
      where carrid = 'LH' OR CARRID = 'AA' GROUP BY CARRID CONNID
                                    HAVING SUM( SEATSOCC ) > 300.
WRITE :/ WA-CARRID, WA-CONNID.
ENDSELECT.

******SORTING - ORDRE BY COLUMN********

DATA : ITAB TYPE TABLE OF SPFLI,
       WA LIKE LINE OF ITAB. 
* SELECT * FROM SPFLI INTO TABLE  ITAB . 
 SELECT * FROM SPFLI INTO TABLE  ITAB ORDER BY PRIMARY KEY.
* SELECT * FROM SPFLI INTO TABLE ITAB ORDER BY CITYFROM  CITYTO. "DESCENDING.

 LOOP AT ITAB INTO WA.
 WRITE :/ WA-CARRID, WA-CONNID, WA-CITYFROM ,WA-CITYTO.
 ENDLOOP.

**** use of group by and order by clause *********

data : wa type sflight.

select carrid connid planetype seatsmax max( seatsocc )
        into (wa-carrid, wa-connid,wa-planetype, wa-seatsmax, wa-seatsocc)
        from sflight where carrid = 'AF'
        group by carrid connid planetype seatsmax order by carrid connid.
write :/ wa-carrid,
          wa-connid,
          wa-planetype,
          wa-seatsmax,
          wa-seatsocc.
 endselect. 

************(1) Sub Queries  ******************

data : name_tab type table of scarr-carrname,
       name like line of name_tab.

select carrname from scarr into table name_tab
where exists ( select *  from spfli where carrid = scarr~carrid and
                                          cityfrom = 'NEW YORK' ) .

if sy-subrc = 0.
  loop at name_tab into name.
    write :/ name.
  endloop.
endif. 

************(2) Sub Queries************

data : carr_id type spfli-carrid value 'AZ',
       conn_id type spfli-connid value '0555'.

data : city type sgeocity-city,
       lati type p decimals 2,
       longi type p decimals 2.

 select single city latitude longitude into (city , lati, longi)
 from sgeocity where city
 in ( select cityfrom from spfli where carrid = carr_id 

                                                  and connid = conn_id ).

write :/ city, lati, longi.  

SUBROUTINES

In order to modularize the program Subroutines are used. Generally Subroutines are called by using PERFORM keyword and defined within FORM and ENDFORM block. There are three ways of passing the data from the calling part to the called part -1. pass by value  2. pass by reference  3 . pass by value and return .

*Subroutine - pass by value method-> using - using value( )******

TYPES : BEGIN OF LINE,

               NAME(10),

              ADD(10),

             END OF LINE.

DATA : PER1 TYPE LINE.

PER1-NAME = 'AAAA'.

PER1-ADD = 'BBBB'.

PERFORM DISPLAY USING PER1. " calling the subroutine - Display

WRITE :/ PER1-NAME, PER1-ADD.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      <--P_PER1  text

*----------------------------------------------------------------------*

FORM DISPLAY  USING VALUE(P_PER1) TYPE LINE.

  WRITE :/ P_PER1-NAME, P_PER1-ADD.

       P_PER1-NAME = 'CCCC'.

       P_PER1-ADD = 'DDDD'.

  WRITE :/ PER1-NAME, PER1-ADD.

ENDFORM.                    " DISPLAY

****************OUTPUT*****************************

AAAA       BBBB

AAAA       BBBB

AAAA       BBBB

**Subroutine - pass by reference method-> using - using***

TYPES : BEGIN OF LINE,

               NAME(10),

              ADD(10),

            END OF LINE.

DATA : PER1 TYPE LINE.

PER1-NAME = 'AAAA'.

PER1-ADD = 'BBBB'.

PERFORM DISPLAY USING PER1.

WRITE :/ PER1-NAME, PER1-ADD.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      <--P_PER1  text

*----------------------------------------------------------------------*

FORM DISPLAY  USING P_PER1 TYPE LINE.

  WRITE :/ P_PER1-NAME, P_PER1-ADD.

         P_PER1-NAME = 'CCCC'.

        P_PER1-ADD = 'DDDD'.

  WRITE :/ PER1-NAME, PER1-ADD.

ENDFORM.                    " DISPLAY

****************OUTPUT**************

AAAA       BBBB

CCCC       DDDD

CCCC       DDDD

**Subroutine - pass by reference method-> using - changing  *

TYPES : BEGIN OF LINE,

              NAME(10),

              ADD(10),

             END OF LINE.

DATA : PER1 TYPE LINE.

PER1-NAME = 'AAAA'.

PER1-ADD = 'BBBB'.

PERFORM DISPLAY USING PER1.

WRITE :/ PER1-NAME, PER1-ADD.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      <--P_PER1  text

*----------------------------------------------------------------------*

FORM DISPLAY  CHANGING P_PER1 TYPE LINE.

  WRITE :/ P_PER1-NAME, P_PER1-ADD.

P_PER1-NAME = 'CCCC'.

P_PER1-ADD = 'DDDD'.

  WRITE :/ PER1-NAME, PER1-ADD.

ENDFORM.                    " DISPLAY

****************OUTPUT*****************

AAAA       BBBB

CCCC       DDDD

CCCC       DDDD

**Subroutine - pass by value and return  method-> using - changing  value( )**

TYPES : BEGIN OF LINE,

              NAME(10),

             ADD(10),

             END OF LINE.

DATA : PER1 TYPE LINE.

PER1-NAME = 'AAAA'.

PER1-ADD = 'BBBB'.

PERFORM DISPLAY USING PER1.

WRITE :/ PER1-NAME, PER1-ADD.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      <--P_PER1  text

*----------------------------------------------------------------------*

FORM DISPLAY  CHANGING VALUE(P_PER1) TYPE LINE.

  WRITE :/ P_PER1-NAME, P_PER1-ADD.

P_PER1-NAME = 'CCCC'.

P_PER1-ADD = 'DDDD'.

  WRITE :/ PER1-NAME, PER1-ADD.

ENDFORM.                    " DISPLAY

****************OUTPUT******************

AAAA       BBBB

AAAA       BBBB

CCCC       DDDD

*Subroutine - pass by reference method-> changing - using  ***

TYPES : BEGIN OF LINE,
               NAME(10),
              ADD(10),
              END OF LINE.

DATA : PER1 TYPE LINE.
PER1-NAME = 'AAAA'.
PER1-ADD = 'BBBB'.
PERFORM DISPLAY CHANGING PER1.
WRITE :/ PER1-NAME, PER1-ADD.
*&---------------------------------------------------------------------*
*&      Form  DISPLAY
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      <--P_PER1  text
*----------------------------------------------------------------------*
FORM DISPLAY  USING P_PER1 TYPE LINE.
  WRITE :/ P_PER1-NAME, P_PER1-ADD.
P_PER1-NAME = 'CCCC'.
P_PER1-ADD = 'DDDD'.
  WRITE :/ PER1-NAME, PER1-ADD.
ENDFORM.                    " DISPLAY

****************OUTPUT****************
AAAA       BBBB
CCCC       DDDD
CCCC       DDDD

*Subroutine - pass by value method-> changing - using  value( ) *

TYPES : BEGIN OF LINE,
              NAME(10),
             ADD(10),
            END OF LINE.

DATA : PER1 TYPE LINE.
PER1-NAME = 'AAAA'.
PER1-ADD = 'BBBB'.
PERFORM DISPLAY CHANGING PER1.
WRITE :/ PER1-NAME, PER1-ADD.
*&---------------------------------------------------------------------*
*&      Form  DISPLAY
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      <--P_PER1  text
*----------------------------------------------------------------------*
FORM DISPLAY  USING VALUE(P_PER1) TYPE LINE.
  WRITE :/ P_PER1-NAME, P_PER1-ADD.
P_PER1-NAME = 'CCCC'.
P_PER1-ADD = 'DDDD'.
  WRITE :/ PER1-NAME, PER1-ADD.
ENDFORM.                    " DISPLAY

****************OUTPUT*****************
AAAA       BBBB
AAAA       BBBB
AAAA       BBBB

**Subroutine - pass by reference method-> changing - changing **

TYPES : BEGIN OF LINE,
              NAME(10),
             ADD(10),
             END OF LINE.

DATA : PER1 TYPE LINE.
PER1-NAME = 'AAAA'.
PER1-ADD = 'BBBB'.
PERFORM DISPLAY CHANGING PER1.
WRITE :/ PER1-NAME, PER1-ADD.
*&---------------------------------------------------------------------*
*&      Form  DISPLAY
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      <--P_PER1  text
*----------------------------------------------------------------------*
FORM DISPLAY  CHANGING P_PER1 TYPE LINE.
  WRITE :/ P_PER1-NAME, P_PER1-ADD.
P_PER1-NAME = 'CCCC'.
P_PER1-ADD = 'DDDD'.
  WRITE :/ PER1-NAME, PER1-ADD.
ENDFORM.                    " DISPLAY

****************OUTPUT************
AAAA       BBBB
CCCC       DDDD
CCCC       DDDD

*Subroutine - pass by value and return  method-> changing - changing value( ) *

TYPES : BEGIN OF LINE,

              NAME(10),

             ADD(10),

            END OF LINE.

DATA : PER1 TYPE LINE.

PER1-NAME = 'AAAA'.

PER1-ADD = 'BBBB'.

PERFORM DISPLAY CHANGING PER1.

WRITE :/ PER1-NAME, PER1-ADD.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      <--P_PER1  text

*----------------------------------------------------------------------*

FORM DISPLAY  CHANGING VALUE(P_PER1) TYPE LINE.

  WRITE :/ P_PER1-NAME, P_PER1-ADD.

P_PER1-NAME = 'CCCC'.

P_PER1-ADD = 'DDDD'.

  WRITE :/ PER1-NAME, PER1-ADD.

ENDFORM.                    " DISPLAY

****************OUTPUT******************

AAAA       BBBB

AAAA       BBBB

CCCC       DDDD

**Subroutine - both type of parameters in subroutine ****

data : num1 type I,
         NUM2 TYPE I,
         RES TYPE I.
NUM1 = 5.
NUM2 = 8.

PERFORM MUL_DSIP USING NUM1 NUM2 CHANGING RES.
WRITE :/ 'VALUE OF RES = ' , RES.
*&---------------------------------------------------------------------*
*&      Form  MUL_DSIP
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      -->P_NUM1  text
*      -->P_NUM2  text
*      <--P_RES  text
*----------------------------------------------------------------------*
FORM MUL_DSIP  USING    VALUE(P_NUM1)
                                                 VALUE(P_NUM2)
                                                  CHANGING VALUE(P_RES).

  P_RES = P_NUM1 * P_NUM2.

  WRITE :/ 'VALUE OF P_RES = ', P_RES.
  WRITE :/ 'VALUE OF RES = ', RES.

ENDFORM.                    " MUL_DSIP

***********OUTPUT**************
VALUE OF P_RES =          40
VALUE OF RES =           0
VALUE OF RES =          40

**********Subroutine -factorial of a number  **********

PARAMETERS NUM TYPE I.
DATA FACT TYPE I VALUE 0.
PERFORM FACTORIAL USING NUM
                                         CHANGING FACT.
WRITE :/ 'FACTORIAL OF ', NUM,'=', FACT.
*&---------------------------------------------------------------------*
*&      Form  FACTORIAL
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      -->P_NUM  text
*      <--P_FACT  text
*----------------------------------------------------------------------*
FORM FACTORIAL  USING   VALUE(P_NUM)
                                                  CHANGING P_FACT.
P_FACT = 1.
WHILE P_NUM > 1.
  P_FACT = P_FACT * P_NUM.
  P_NUM = P_NUM - 1.
  ENDWHILE.
ENDFORM.                    " FACTORIAL

******************OUTPUT***************
FACTORIAL OF           5  =        120

**********Subroutine -local and global data  **********

DATA TEXT(5) TYPE C VALUE 'ABCDE'.
WRITE :/ TEXT.
PERFORM DISPLAY.
WRITE :/ TEXT.
*&---------------------------------------------------------------------*
*&      Form  DISPLAY
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM DISPLAY .
  DATA TEXT TYPE CHAR5 VALUE 'EDCBA'.
  WRITE :/ TEXT.
ENDFORM.                    " DISPLAY

******************OUTPUT**************
ABCDE
EDCBA
ABCDE

**********Subroutine - with exit statement **********

perform exit_unconditionally.

write :/ 'Get back control again after uncoditionally stop nby exit'.

*&---------------------------------------------------------------------*

*&      Form  EXIT_UNCONDITIONALLY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM EXIT_UNCONDITIONALLY .

write :/ 'one'.

write :/ 'two'.

write :/ 'three'.

write :/ 'four'.

exit.

write :/ 'five'.

ENDFORM.                    " EXIT_UNCONDITIONALLY

****************** OUTPUT **************

one

two

three

four

Get back control again after uncoditionally stop nby exit

**********Subroutine - with check statement **********

DATA : NUM1 TYPE I,

            NUM2 TYPE I,

            RES TYPE P DECIMALS 2.

NUM1 = 10. NUM2 = 3.

perform CHECK_DISPALY USING NUM1 NUM2 CHANGING RES.

NUM1 = 10. NUM2 = 0.

perform CHECK_DISPALY USING NUM1 NUM2 CHANGING RES.

NUM1 = 20. NUM2 = 8.

perform CHECK_DISPALY USING NUM1 NUM2 CHANGING RES.

*&---------------------------------------------------------------------*

*&      Form  CHECK_DISPALY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      -->P_NUM1  text

*      -->P_NUM2  text

*      <--P_RES  text

*----------------------------------------------------------------------*

FORM CHECK_DISPALY  USING    P_NUM1

                                                             P_NUM2

                                            CHANGING P_RES.

CHECK P_NUM2 NE 0.

P_RES = P_NUM1 / P_NUM2.

WRITE :/ 'DIVISION = ', P_RES.

ENDFORM.                    " CHECK_DISPALY

*************OUTPUT****************

DIVISION =              3,33

DIVISION =              2,50

**Subroutine - multiple call of subroutine in a single line ****

DO 2 TIMES.

PERFORM SY-INDEX OF SUBROUT1 SUBROUT2.

ENDDO.

*&---------------------------------------------------------------------*

*&      Form  SUBROUT1

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM SUBROUT1 .

WRITE :/ 'SUBROUTINE 1 OF PROGRAM ZPGM'.

ENDFORM.                    " SUBROUT1

*&---------------------------------------------------------------------*

*&      Form  SUBROUT2

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM SUBROUT2 .

WRITE :/ 'SUBROUTINE 2 OF PROGRAM ZPGM'.

ENDFORM.                    " SUBROUT2

*******************OUTOUT*****************

SUBROUTINE 1 OF PROGRAM ZPGM

SUBROUTINE 2 OF PROGRAM ZPGM

**********Subroutine - nested  subroutine  **********

DATA : NUM1 TYPE I,

             NUM2 TYPE I,

             RES TYPE I.

 NUM1 = 10.

 NUM2 = 3.

perform ADDITION.

*&---------------------------------------------------------------------*

*&      Form  ADDITION

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM ADDITION .

RES = NUM1 + NUM2.

PERFORM DISPLAY.

ENDFORM.                    " ADDITION

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM DISPLAY .

WRITE :/ NUM1 , '+', NUM2 , '=', RES.

ENDFORM.                    " DISPLAY

*******OUTPUT********************

        10  +          3  =         13

**Subroutine - uses of data and static data in subroutine  ****

PERFORM FUNCTION1.

PERFORM FUNCTION1.

SKIP 2.

ULINE.

PERFORM FUNCTION2.

PERFORM FUNCTION2.

*&---------------------------------------------------------------------*

*&      Form  FUNCTION1

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM FUNCTION1 .

DATA : TEXT1 TYPE C LENGTH 5 VALUE 'ABCDE'.

WRITE :/ TEXT1.

TEXT1 = '12345'.

WRITE :/ TEXT1.

ENDFORM.                    " FUNCTION1

*&---------------------------------------------------------------------*

*&      Form  FUNCTION2

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM FUNCTION2 .

STATICS TEXT2 TYPE C LENGTH 5 VALUE 'PQRST'.

WRITE :/ TEXT2.

TEXT2 = '54321'.

WRITE :/ TEXT2.

ENDFORM.                    " FUNCTION2

******************OUTPUT***************

ABCDE

12345

ABCDE

12345

PQRST

54321

54321

54321

*Subroutine - uses of  global and local work area in subroutine  **

TABLES : SFLIGHT.

PERFORM ASSIGN1.

WRITE :/ SFLIGHT-CARRID, SFLIGHT-CONNID.

PERFORM ASSIGN2.

WRITE :/ SFLIGHT-CARRID, SFLIGHT-CONNID.

*&---------------------------------------------------------------------*

*&      Form  ASSIGN1

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM ASSIGN1 .

*TABLES : SFLIGHT. " DECLARATION NOT POSSIBLE ALREDAY EXISTS

  SFLIGHT-CARRID = 'SSS'.

  SFLIGHT-CONNID = '1234'.

  WRITE :/ SFLIGHT-CARRID , SFLIGHT-CONNID.

ENDFORM.                    " ASSIGN1

*&---------------------------------------------------------------------*

*&      Form  ASSIGN2

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM ASSIGN2 .

  LOCAL SFLIGHT.

SFLIGHT-CARRID = 'PPP'.

  SFLIGHT-CONNID = '4321'.

  WRITE :/ SFLIGHT-CARRID , SFLIGHT-CONNID.

ENDFORM.                    " ASSIGN2

******************OUTPUT******************

SSS 1234

SSS 1234

PPP 4321

SSS 1234

*Subroutine - calling a subroutine of other program  ****

REPORT ZPGM.

PERFORM DISPLAY.

*&---------------------------------------------------------------------*

*&      Form  DISPALY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM DISPLAY .

WRITE :/ 'SUBROUTINE OF THE PROGRAM = ', SY-CPROG.

ENDFORM.                    " DISPALY

********CALLING THIS SUBROUTINE FROM ZPGM1 **********

REPORT ZPGM1.

PERFORM DISPLAY(ZPGM) IF FOUND.

*********************OUTPUT OF ZPGM1******************

SUBROUTINE OF THE PROGRAM =  ZPGM1

**Subroutine - dynamic calling a subroutine from  other program  *

REPORT ZPGM.

PERFORM SUBROUT1.

PERFORM SUBROUT2.

*&---------------------------------------------------------------------*

*&      Form  SUBROUT1

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM SUBROUT1 .

WRITE :/ 'SUBROUTINE 1 OF PROGRAM ZPGM'.

ENDFORM.                    " SUBROUT1

*&---------------------------------------------------------------------*

*&      Form  SUBROUT2

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*  -->  p1        text

*  <--  p2        text

*----------------------------------------------------------------------*

FORM SUBROUT2 .

WRITE :/ 'SUBROUTINE 2 OF PROGRAM ZPGM'.

ENDFORM.                    " SUBROUT2

*******************************************************

REPORT ZPGM1.

DATA : PROGRAM_NAME TYPE C LENGTH 5 VALUE 'ZPGM'.

DATA : SUB_NAME TYPE C LENGTH 8 VALUE 'SUBROUT1'.

PERFORM (SUB_NAME) IN PROGRAM (PROGRAM_NAME) IF FOUND.

  SUB_NAME = 'SUBROUT2'.

PERFORM (SUB_NAME) IN PROGRAM (PROGRAM_NAME) IF FOUND.

********************OUTPUT *******************

SUBROUTINE 1 OF PROGRAM ZPGM

SUBROUTINE 2 OF PROGRAM ZPGM

**Subroutine - passing work area to a subroutine and handled by field symbol  **

DATA : BEGIN OF LINE,

           COL1 TYPE C VALUE 'A',

           COL2 TYPE C VALUE 'B',

           END OF LINE.

DATA : COL(4) TYPE C VALUE 'COL1'.

PERFORM DISPLAY USING LINE.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      -->P_LINE  text

*----------------------------------------------------------------------*

FORM DISPLAY  USING    P_LINE . " P_line type any

FIELD-SYMBOLS <FS>.

assign component col of structure p_line to <FS>.

write :/ <FS>.

assign component 2 of structure p_line to <FS>.

write :/ <FS>.

ENDFORM.                    " DISPLAY

*************OUTPUT***********

A

B

**Subroutine - passing work area to a subroutine and handled by field symbol  **

data : begin of line,

          col1 value 'x',

          col2 value 'y',

         end of line.

data : comp(4) type c value 'COL2'.

perform display using line.

*&---------------------------------------------------------------------*

*&      Form  DISPLAY

*&---------------------------------------------------------------------*

*       text

*----------------------------------------------------------------------*

*      -->P_LINE  text

*----------------------------------------------------------------------*

FORM DISPLAY  USING    P_LINE type any.

field-symbols : <fs>.

assign component 1 of structure p_line to <fs>.

write :/ <fs>.

ASSIGN COMPONENT COMP OF STRUCTURE P_LINE TO <FS>.

WRITE /  <FS>.

ENDFORM.                    " DISPLAY

************** OUTPUT ******************

x

y

-------------------------------------------------------------------------------------------------------------