ABAP Select data from SAP table RCBDP_LWDGSELIOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCBDP_LWDGSELIOT
*  INTO TABLE @DATA(IT_RCBDP_LWDGSELIOT2).
*--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_RCBDP_LWDGSELIOT INDEX 1 INTO DATA(WA_RCBDP_LWDGSELIOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCBDP_LWDGSELIOT>-MARKFLG = 1.
<RCBDP_LWDGSELIOT>-SELEFLG = 1.
<RCBDP_LWDGSELIOT>-LINENO = 1.
<RCBDP_LWDGSELIOT>-LINEMOD = 1.
<RCBDP_LWDGSELIOT>-CHCOFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCBDP_LWDGSELIOT-LOCKMOD, sy-vline,
  WA_RCBDP_LWDGSELIOT-INTRFLG, sy-vline,
  WA_RCBDP_LWDGSELIOT-MANDT, sy-vline,
  WA_RCBDP_LWDGSELIOT-RECN, sy-vline,
  WA_RCBDP_LWDGSELIOT-ACTN, sy-vline,
  WA_RCBDP_LWDGSELIOT-RECNROOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCBDP_LWDGSELIOT 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_RCBDP_LWDGSELIOT 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_RCBDP_LWDGSELIOT INTO WA_RCBDP_LWDGSELIOT.


*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 ALPHA, internal->external for field RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-RECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-ACTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-ACTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECNROOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-RECNROOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-RECNROOT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECNROOT_ORIG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-RECNROOT_ORIG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-RECNROOT_ORIG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LS_UN_SUB_RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-LS_UN_SUB_RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-LS_UN_SUB_RECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPEC1, internal->external for field LS_UN_SUB_SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-LS_UN_SUB_SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-LS_UN_SUB_SUBID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UN_VAL_RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-UN_VAL_RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-UN_VAL_RECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UN_VAL_ACTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCBDP_LWDGSELIOT-UN_VAL_ACTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDP_LWDGSELIOT-UN_VAL_ACTN.
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_RCBDP_LWDGSELIOT_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
RECNROOT TYPE STRING,
RECNROOT_ORIG TYPE STRING,
INSTR_ENCL TYPE STRING,
LWDG TYPE STRING,
COUNT_DGREL TYPE STRING,
LS_UN_SUB_RECN TYPE STRING,
LS_UN_SUB_SUBID TYPE STRING,
UN_VAL_RECN TYPE STRING,
UN_VAL_ACTN TYPE STRING,
TKUI TYPE STRING,
DGNU TYPE STRING,
DGNA TYPE STRING,
DPOT TYPE STRING,
LDBC TYPE STRING,
PGRO TYPE STRING,
DGCL TYPE STRING,
DGTA TYPE STRING,
NHM TYPE STRING,
NHME TYPE STRING,
WOS TYPE STRING,
MREL TYPE STRING,
WOSD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCBDP_LWDGSELIOT_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_RCBDP_LWDGSELIOT_STR-MARKFLG sy-vline 
WA_RCBDP_LWDGSELIOT_STR-SELEFLG sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LINENO sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LINEMOD sy-vline 
WA_RCBDP_LWDGSELIOT_STR-CHCOFLG sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LOCKMOD sy-vline 
WA_RCBDP_LWDGSELIOT_STR-INTRFLG sy-vline 
WA_RCBDP_LWDGSELIOT_STR-MANDT sy-vline 
WA_RCBDP_LWDGSELIOT_STR-RECN sy-vline 
WA_RCBDP_LWDGSELIOT_STR-ACTN sy-vline 
WA_RCBDP_LWDGSELIOT_STR-RECNROOT sy-vline 
WA_RCBDP_LWDGSELIOT_STR-RECNROOT_ORIG sy-vline 
WA_RCBDP_LWDGSELIOT_STR-INSTR_ENCL sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LWDG sy-vline 
WA_RCBDP_LWDGSELIOT_STR-COUNT_DGREL sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LS_UN_SUB_RECN sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LS_UN_SUB_SUBID sy-vline 
WA_RCBDP_LWDGSELIOT_STR-UN_VAL_RECN sy-vline 
WA_RCBDP_LWDGSELIOT_STR-UN_VAL_ACTN sy-vline 
WA_RCBDP_LWDGSELIOT_STR-TKUI sy-vline 
WA_RCBDP_LWDGSELIOT_STR-DGNU sy-vline 
WA_RCBDP_LWDGSELIOT_STR-DGNA sy-vline 
WA_RCBDP_LWDGSELIOT_STR-DPOT sy-vline 
WA_RCBDP_LWDGSELIOT_STR-LDBC sy-vline 
WA_RCBDP_LWDGSELIOT_STR-PGRO sy-vline 
WA_RCBDP_LWDGSELIOT_STR-DGCL sy-vline 
WA_RCBDP_LWDGSELIOT_STR-DGTA sy-vline 
WA_RCBDP_LWDGSELIOT_STR-NHM sy-vline 
WA_RCBDP_LWDGSELIOT_STR-NHME sy-vline 
WA_RCBDP_LWDGSELIOT_STR-WOS sy-vline 
WA_RCBDP_LWDGSELIOT_STR-MREL sy-vline 
WA_RCBDP_LWDGSELIOT_STR-WOSD sy-vline      INTO ld_text SEPARATED BY SPACE.

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