ABAP Select data from SAP table RDM_S_BBY_CROSS_CHECK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDM_S_BBY_CROSS_CHECK
*  INTO TABLE @DATA(IT_RDM_S_BBY_CROSS_CHECK2).
*--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_RDM_S_BBY_CROSS_CHECK INDEX 1 INTO DATA(WA_RDM_S_BBY_CROSS_CHECK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDM_S_BBY_CROSS_CHECK>-MATNR = 1.
<RDM_S_BBY_CROSS_CHECK>-MAKTX = 1.
<RDM_S_BBY_CROSS_CHECK>-BBYNR = 1.
<RDM_S_BBY_CROSS_CHECK>-BBYTEXT = 1.
<RDM_S_BBY_CROSS_CHECK>-BUY_GET_IND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDM_S_BBY_CROSS_CHECK-MLTPL_ARTICLE, sy-vline,
  WA_RDM_S_BBY_CROSS_CHECK-STATUS, sy-vline,
  WA_RDM_S_BBY_CROSS_CHECK-DATAB, sy-vline,
  WA_RDM_S_BBY_CROSS_CHECK-DATBI, sy-vline,
  WA_RDM_S_BBY_CROSS_CHECK-VKORG, sy-vline,
  WA_RDM_S_BBY_CROSS_CHECK-VKORG_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDM_S_BBY_CROSS_CHECK 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_RDM_S_BBY_CROSS_CHECK 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_RDM_S_BBY_CROSS_CHECK INTO WA_RDM_S_BBY_CROSS_CHECK.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RDM_S_BBY_CROSS_CHECK-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDM_S_BBY_CROSS_CHECK-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field OFFER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDM_S_BBY_CROSS_CHECK-OFFER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDM_S_BBY_CROSS_CHECK-OFFER_ID.
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_RDM_S_BBY_CROSS_CHECK_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
BBYNR TYPE STRING,
BBYTEXT TYPE STRING,
BUY_GET_IND TYPE STRING,
MLTPL_ARTICLE TYPE STRING,
STATUS TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
VKORG TYPE STRING,
VKORG_TEXT TYPE STRING,
VTWEG TYPE STRING,
VTWEG_TEXT TYPE STRING,
PLTYP TYPE STRING,
PTEXT TYPE STRING,
WERKS TYPE STRING,
TXTMD TYPE STRING,
ORG_LEVEL TYPE STRING,
CRAPPL TYPE STRING,
MQUAN TYPE STRING,
VRKME TYPE STRING,
MATTYPE TYPE STRING,
IDENT TYPE STRING,
REWARD_TOTAL TYPE STRING,
DISCTYPE TYPE STRING,
BBYVAL TYPE STRING,
BBYCUR TYPE STRING,
AKTNR TYPE STRING,
AKTKT TYPE STRING,
OFFER_ID TYPE STRING,
MATKL TYPE STRING,
STATUS_TXT TYPE STRING,
COLOR TYPE STRING,
CELL TYPE STRING,
BBY_TO_BE_CHECKED TYPE STRING,
CRNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDM_S_BBY_CROSS_CHECK_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_RDM_S_BBY_CROSS_CHECK_STR-MATNR sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-MAKTX sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-BBYNR sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-BBYTEXT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-BUY_GET_IND sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-MLTPL_ARTICLE sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-STATUS sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-DATAB sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-DATBI sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-VKORG sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-VKORG_TEXT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-VTWEG sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-VTWEG_TEXT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-PLTYP sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-PTEXT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-WERKS sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-TXTMD sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-ORG_LEVEL sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-CRAPPL sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-MQUAN sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-VRKME sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-MATTYPE sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-IDENT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-REWARD_TOTAL sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-DISCTYPE sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-BBYVAL sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-BBYCUR sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-AKTNR sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-AKTKT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-OFFER_ID sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-MATKL sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-STATUS_TXT sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-COLOR sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-CELL sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-BBY_TO_BE_CHECKED sy-vline 
WA_RDM_S_BBY_CROSS_CHECK_STR-CRNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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