ABAP Select data from SAP table /CUM/BAPI_CU_SERVICE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CUM/BAPI_CU_SERVICE 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 /CUM/BAPI_CU_SERVICE. 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 /CUM/BAPI_CU_SERVICE 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_/CUM/BAPI_CU_SERVICE TYPE STANDARD TABLE OF /CUM/BAPI_CU_SERVICE,
      WA_/CUM/BAPI_CU_SERVICE TYPE /CUM/BAPI_CU_SERVICE,
      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: </CUM/BAPI_CU_SERVICE> TYPE /CUM/BAPI_CU_SERVICE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CUM/BAPI_CU_SERVICE
  INTO TABLE IT_/CUM/BAPI_CU_SERVICE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CUM/BAPI_CU_SERVICE
*  INTO TABLE @DATA(IT_/CUM/BAPI_CU_SERVICE2).
*--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_/CUM/BAPI_CU_SERVICE INDEX 1 INTO DATA(WA_/CUM/BAPI_CU_SERVICE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CUM/BAPI_CU_SERVICE ASSIGNING </CUM/BAPI_CU_SERVICE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CUM/BAPI_CU_SERVICE>-CU_ID = 1.
</CUM/BAPI_CU_SERVICE>-ACTION = 1.
</CUM/BAPI_CU_SERVICE>-ASNUM = 1.
</CUM/BAPI_CU_SERVICE>-MENGE = 1.
</CUM/BAPI_CU_SERVICE>-MEEHT = 1.

ENDLOOP.

LOOP AT IT_/CUM/BAPI_CU_SERVICE INTO WA_/CUM/BAPI_CU_SERVICE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CUM/BAPI_CU_SERVICE-LTEXT, sy-vline,
  WA_/CUM/BAPI_CU_SERVICE-TPREIS, sy-vline,
  WA_/CUM/BAPI_CU_SERVICE-GPREIS, sy-vline,
  WA_/CUM/BAPI_CU_SERVICE-FWAER, sy-vline,
  WA_/CUM/BAPI_CU_SERVICE-KSTAR, sy-vline,
  WA_/CUM/BAPI_CU_SERVICE-CU_ID_LONG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CUM/BAPI_CU_SERVICE 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_/CUM/BAPI_CU_SERVICE 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_/CUM/BAPI_CU_SERVICE INTO WA_/CUM/BAPI_CU_SERVICE.


*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 MATN1, internal->external for field CU_ID
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/BAPI_CU_SERVICE-CU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/BAPI_CU_SERVICE-CU_ID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/BAPI_CU_SERVICE-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/BAPI_CU_SERVICE-MEEHT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field CU_ID_LONG
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/BAPI_CU_SERVICE-CU_ID_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/BAPI_CU_SERVICE-CU_ID_LONG.
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_/CUM/BAPI_CU_SERVICE_STR, 
CU_ID TYPE STRING,
ACTION TYPE STRING,
ASNUM TYPE STRING,
MENGE TYPE STRING,
MEEHT TYPE STRING,
LTEXT TYPE STRING,
TPREIS TYPE STRING,
GPREIS TYPE STRING,
FWAER TYPE STRING,
KSTAR TYPE STRING,
CU_ID_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CUM/BAPI_CU_SERVICE_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_/CUM/BAPI_CU_SERVICE_STR-CU_ID sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-ACTION sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-ASNUM sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-MENGE sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-MEEHT sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-LTEXT sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-TPREIS sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-GPREIS sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-FWAER sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-KSTAR sy-vline 
WA_/CUM/BAPI_CU_SERVICE_STR-CU_ID_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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