ABAP Select data from SAP table BAPITRVCTT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPITRVCTT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to BAPITRVCTT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the BAPITRVCTT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_BAPITRVCTT TYPE STANDARD TABLE OF BAPITRVCTT,
      WA_BAPITRVCTT TYPE BAPITRVCTT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <BAPITRVCTT> TYPE BAPITRVCTT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPITRVCTT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPITRVCTT
  INTO TABLE IT_BAPITRVCTT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPITRVCTT
*  INTO TABLE @DATA(IT_BAPITRVCTT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_BAPITRVCTT INDEX 1 INTO DATA(WA_BAPITRVCTT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPITRVCTT ASSIGNING <BAPITRVCTT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPITRVCTT>-PERNR = 1.
<BAPITRVCTT>-REINR = 1.
<BAPITRVCTT>-PERIO = 1.
<BAPITRVCTT>-PDVRS = 1.
<BAPITRVCTT>-KATEG = 1.

ENDLOOP.

LOOP AT IT_BAPITRVCTT INTO WA_BAPITRVCTT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPITRVCTT-SPKZL, sy-vline,
  WA_BAPITRVCTT-BETRG, sy-vline,
  WA_BAPITRVCTT-WAERS, sy-vline,
  WA_BAPITRVCTT-BKURS, sy-vline,
  WA_BAPITRVCTT-MWSKZ, sy-vline,
  WA_BAPITRVCTT-BDATU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPITRVCTT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_BAPITRVCTT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_BAPITRVCTT INTO WA_BAPITRVCTT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BAPITRVCTT_STR, 
PERNR TYPE STRING,
REINR TYPE STRING,
PERIO TYPE STRING,
PDVRS TYPE STRING,
KATEG TYPE STRING,
SPKZL TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
BKURS TYPE STRING,
MWSKZ TYPE STRING,
BDATU TYPE STRING,
BZEIT TYPE STRING,
BTEXT TYPE STRING,
ANZFR TYPE STRING,
LNDFR TYPE STRING,
REGIO TYPE STRING,
C_DOC TYPE STRING,
TODO TYPE STRING,
CCOMP TYPE STRING,
C_TXT TYPE STRING,
FRONT TYPE STRING,
CCARD TYPE STRING,
CRUN TYPE STRING,
PAYOT TYPE STRING,
LOC_AMOUNT TYPE STRING,
LOC_CURR TYPE STRING,
CEKEY TYPE STRING,
FIRMA TYPE STRING,
GUID_CCC TYPE STRING,
CCARD_GUID TYPE STRING,
REVERSE_CHARGE_TAX TYPE STRING,
REVERSE_CHARGE_COUNTRY TYPE STRING,
AIR_DEPARTURE TYPE STRING,
AIR_ARRIVAL TYPE STRING,
AIRLINE TYPE STRING,
AIR_CABIN_CLASS TYPE STRING,
AIR_TICKET_NUMBER_OBSOLET TYPE STRING,
CAR_ODOMETER_READING TYPE STRING,
SE_NAME TYPE STRING,
SE_STREET TYPE STRING,
SE_CITY TYPE STRING,
SE_STATE_PROVINCE TYPE STRING,
SE_COUNTRY TYPE STRING,
SE_POSTAL_CODE TYPE STRING,
SE_CUSTOMER_SERVICE_PHONE TYPE STRING,
IMAGE_LINK TYPE STRING,
FROM_CCC TYPE STRING,
FROM_PLAN TYPE STRING,
FROM_MOBILE TYPE STRING,
AIR_TICKET_NUMBER TYPE STRING,
PERIOD TYPE STRING,
REC_NO TYPE STRING,
SCHEM TYPE STRING,
LFDNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPITRVCTT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_BAPITRVCTT_STR-PERNR sy-vline 
WA_BAPITRVCTT_STR-REINR sy-vline 
WA_BAPITRVCTT_STR-PERIO sy-vline 
WA_BAPITRVCTT_STR-PDVRS sy-vline 
WA_BAPITRVCTT_STR-KATEG sy-vline 
WA_BAPITRVCTT_STR-SPKZL sy-vline 
WA_BAPITRVCTT_STR-BETRG sy-vline 
WA_BAPITRVCTT_STR-WAERS sy-vline 
WA_BAPITRVCTT_STR-BKURS sy-vline 
WA_BAPITRVCTT_STR-MWSKZ sy-vline 
WA_BAPITRVCTT_STR-BDATU sy-vline 
WA_BAPITRVCTT_STR-BZEIT sy-vline 
WA_BAPITRVCTT_STR-BTEXT sy-vline 
WA_BAPITRVCTT_STR-ANZFR sy-vline 
WA_BAPITRVCTT_STR-LNDFR sy-vline 
WA_BAPITRVCTT_STR-REGIO sy-vline 
WA_BAPITRVCTT_STR-C_DOC sy-vline 
WA_BAPITRVCTT_STR-TODO sy-vline 
WA_BAPITRVCTT_STR-CCOMP sy-vline 
WA_BAPITRVCTT_STR-C_TXT sy-vline 
WA_BAPITRVCTT_STR-FRONT sy-vline 
WA_BAPITRVCTT_STR-CCARD sy-vline 
WA_BAPITRVCTT_STR-CRUN sy-vline 
WA_BAPITRVCTT_STR-PAYOT sy-vline 
WA_BAPITRVCTT_STR-LOC_AMOUNT sy-vline 
WA_BAPITRVCTT_STR-LOC_CURR sy-vline 
WA_BAPITRVCTT_STR-CEKEY sy-vline 
WA_BAPITRVCTT_STR-FIRMA sy-vline 
WA_BAPITRVCTT_STR-GUID_CCC sy-vline 
WA_BAPITRVCTT_STR-CCARD_GUID sy-vline 
WA_BAPITRVCTT_STR-REVERSE_CHARGE_TAX sy-vline 
WA_BAPITRVCTT_STR-REVERSE_CHARGE_COUNTRY sy-vline 
WA_BAPITRVCTT_STR-AIR_DEPARTURE sy-vline 
WA_BAPITRVCTT_STR-AIR_ARRIVAL sy-vline 
WA_BAPITRVCTT_STR-AIRLINE sy-vline 
WA_BAPITRVCTT_STR-AIR_CABIN_CLASS sy-vline 
WA_BAPITRVCTT_STR-AIR_TICKET_NUMBER_OBSOLET sy-vline 
WA_BAPITRVCTT_STR-CAR_ODOMETER_READING sy-vline 
WA_BAPITRVCTT_STR-SE_NAME sy-vline 
WA_BAPITRVCTT_STR-SE_STREET sy-vline 
WA_BAPITRVCTT_STR-SE_CITY sy-vline 
WA_BAPITRVCTT_STR-SE_STATE_PROVINCE sy-vline 
WA_BAPITRVCTT_STR-SE_COUNTRY sy-vline 
WA_BAPITRVCTT_STR-SE_POSTAL_CODE sy-vline 
WA_BAPITRVCTT_STR-SE_CUSTOMER_SERVICE_PHONE sy-vline 
WA_BAPITRVCTT_STR-IMAGE_LINK sy-vline 
WA_BAPITRVCTT_STR-FROM_CCC sy-vline 
WA_BAPITRVCTT_STR-FROM_PLAN sy-vline 
WA_BAPITRVCTT_STR-FROM_MOBILE sy-vline 
WA_BAPITRVCTT_STR-AIR_TICKET_NUMBER sy-vline 
WA_BAPITRVCTT_STR-PERIOD sy-vline 
WA_BAPITRVCTT_STR-REC_NO sy-vline 
WA_BAPITRVCTT_STR-SCHEM sy-vline 
WA_BAPITRVCTT_STR-LFDNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.