ABAP Select data from SAP table RCAPTR_TRANSFER_INSTRUCTIONS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCAPTR_TRANSFER_INSTRUCTIONS 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 RCAPTR_TRANSFER_INSTRUCTIONS. 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 RCAPTR_TRANSFER_INSTRUCTIONS 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_RCAPTR_TRANSFER_INSTRUCTIONS TYPE STANDARD TABLE OF RCAPTR_TRANSFER_INSTRUCTIONS,
      WA_RCAPTR_TRANSFER_INSTRUCTIONS TYPE RCAPTR_TRANSFER_INSTRUCTIONS,
      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: <RCAPTR_TRANSFER_INSTRUCTIONS> TYPE RCAPTR_TRANSFER_INSTRUCTIONS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCAPTR_TRANSFER_INSTRUCTIONS
*  INTO TABLE @DATA(IT_RCAPTR_TRANSFER_INSTRUCTIONS2).
*--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_RCAPTR_TRANSFER_INSTRUCTIONS INDEX 1 INTO DATA(WA_RCAPTR_TRANSFER_INSTRUCTIONS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCAPTR_TRANSFER_INSTRUCTIONS>-DVALUTTF = 1.
<RCAPTR_TRANSFER_INSTRUCTIONS>-IULTDVALUTTF = 1.
<RCAPTR_TRANSFER_INSTRUCTIONS>-ICOMTF = 1.
<RCAPTR_TRANSFER_INSTRUCTIONS>-IREDISTF = 1.
<RCAPTR_TRANSFER_INSTRUCTIONS>-IPREDISTF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCAPTR_TRANSFER_INSTRUCTIONS-INEUVALTF, sy-vline,
  WA_RCAPTR_TRANSFER_INSTRUCTIONS-REXCHGRA, sy-vline,
  WA_RCAPTR_TRANSFER_INSTRUCTIONS-DEXCHGRA, sy-vline,
  WA_RCAPTR_TRANSFER_INSTRUCTIONS-INSEREPCF_T, sy-vline,
  WA_RCAPTR_TRANSFER_INSTRUCTIONS-MTEMPLNO, sy-vline,
  WA_RCAPTR_TRANSFER_INSTRUCTIONS-RECAPCONTROL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCAPTR_TRANSFER_INSTRUCTIONS 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_RCAPTR_TRANSFER_INSTRUCTIONS 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_RCAPTR_TRANSFER_INSTRUCTIONS INTO WA_RCAPTR_TRANSFER_INSTRUCTIONS.


*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.

*Conversion exit EXCRT, internal->external for field REXCHGRA
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RCAPTR_TRANSFER_INSTRUCTIONS-REXCHGRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCAPTR_TRANSFER_INSTRUCTIONS-REXCHGRA.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_RCAPTR_TRANSFER_INSTRUCTIONS_STR, 
DVALUTTF TYPE STRING,
IULTDVALUTTF TYPE STRING,
ICOMTF TYPE STRING,
IREDISTF TYPE STRING,
IPREDISTF TYPE STRING,
INEUVALTF TYPE STRING,
REXCHGRA TYPE STRING,
DEXCHGRA TYPE STRING,
INSEREPCF_T TYPE STRING,
MTEMPLNO TYPE STRING,
RECAPCONTROL TYPE STRING,
DIOBCONTROL TYPE STRING,
REDISCONTROL TYPE STRING,
PREDISCONTROL TYPE STRING,
NSEREPCONTROL TYPE STRING,
COMCAPCONTROL TYPE STRING,
SCHEDREPCONTROL TYPE STRING,
UNSCHEDREPCONTR TYPE STRING,
PRATETF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCAPTR_TRANSFER_INSTRUCTIONS_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_RCAPTR_TRANSFER_INSTRUCTIONS_STR-DVALUTTF sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-IULTDVALUTTF sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-ICOMTF sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-IREDISTF sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-IPREDISTF sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-INEUVALTF sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-REXCHGRA sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-DEXCHGRA sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-INSEREPCF_T sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-MTEMPLNO sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-RECAPCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-DIOBCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-REDISCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-PREDISCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-NSEREPCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-COMCAPCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-SCHEDREPCONTROL sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-UNSCHEDREPCONTR sy-vline 
WA_RCAPTR_TRANSFER_INSTRUCTIONS_STR-PRATETF sy-vline      INTO ld_text SEPARATED BY SPACE.

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