ABAP Select data from SAP table CRMS4S_SOM_PROD_API_DISC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMS4S_SOM_PROD_API_DISC 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 CRMS4S_SOM_PROD_API_DISC. 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 CRMS4S_SOM_PROD_API_DISC 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_CRMS4S_SOM_PROD_API_DISC TYPE STANDARD TABLE OF CRMS4S_SOM_PROD_API_DISC,
      WA_CRMS4S_SOM_PROD_API_DISC TYPE CRMS4S_SOM_PROD_API_DISC,
      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: <CRMS4S_SOM_PROD_API_DISC> TYPE CRMS4S_SOM_PROD_API_DISC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CRMS4S_SOM_PROD_API_DISC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CRMS4S_SOM_PROD_API_DISC
  INTO TABLE IT_CRMS4S_SOM_PROD_API_DISC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMS4S_SOM_PROD_API_DISC
*  INTO TABLE @DATA(IT_CRMS4S_SOM_PROD_API_DISC2).
*--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_CRMS4S_SOM_PROD_API_DISC INDEX 1 INTO DATA(WA_CRMS4S_SOM_PROD_API_DISC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CRMS4S_SOM_PROD_API_DISC ASSIGNING <CRMS4S_SOM_PROD_API_DISC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMS4S_SOM_PROD_API_DISC>-SUBSCRPNPRODCHRGANDDISCUUID = 1.
<CRMS4S_SOM_PROD_API_DISC>-CABLLBLEITMDISCOUNTKEY = 1.
<CRMS4S_SOM_PROD_API_DISC>-SUBSCRPNPRODDISCOUNTVALDFRMDTE = 1.
<CRMS4S_SOM_PROD_API_DISC>-SUBSCRPNPRODDISCVALIDTODATE = 1.
<CRMS4S_SOM_PROD_API_DISC>-SUBSCRPNCONTRACTRELEVANTTYPE = 1.

ENDLOOP.

LOOP AT IT_CRMS4S_SOM_PROD_API_DISC INTO WA_CRMS4S_SOM_PROD_API_DISC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMS4S_SOM_PROD_API_DISC-SUBSCRPNPRODCHRGORDISCHASDURN, sy-vline,
  WA_CRMS4S_SOM_PROD_API_DISC-SUBSCRPNPRODCHRGORDISCDURN, sy-vline,
  WA_CRMS4S_SOM_PROD_API_DISC-DURATIONUNIT, sy-vline,
  WA_CRMS4S_SOM_PROD_API_DISC-SUBSCRPNCHRGANDDISCACTVTNCNDN, sy-vline,
  WA_CRMS4S_SOM_PROD_API_DISC-BRFFUNCNAME, sy-vline,
  WA_CRMS4S_SOM_PROD_API_DISC-CHARACTERISTIC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMS4S_SOM_PROD_API_DISC 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_CRMS4S_SOM_PROD_API_DISC 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_CRMS4S_SOM_PROD_API_DISC INTO WA_CRMS4S_SOM_PROD_API_DISC.


*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_CRMS4S_SOM_PROD_API_DISC_STR, 
SUBSCRPNPRODCHRGANDDISCUUID TYPE STRING,
CABLLBLEITMDISCOUNTKEY TYPE STRING,
SUBSCRPNPRODDISCOUNTVALDFRMDTE TYPE STRING,
SUBSCRPNPRODDISCVALIDTODATE TYPE STRING,
SUBSCRPNCONTRACTRELEVANTTYPE TYPE STRING,
SUBSCRPNPRODCHRGORDISCHASDURN TYPE STRING,
SUBSCRPNPRODCHRGORDISCDURN TYPE STRING,
DURATIONUNIT TYPE STRING,
SUBSCRPNCHRGANDDISCACTVTNCNDN TYPE STRING,
BRFFUNCNAME TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARACTERISTICVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMS4S_SOM_PROD_API_DISC_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_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNPRODCHRGANDDISCUUID sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-CABLLBLEITMDISCOUNTKEY sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNPRODDISCOUNTVALDFRMDTE sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNPRODDISCVALIDTODATE sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNCONTRACTRELEVANTTYPE sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNPRODCHRGORDISCHASDURN sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNPRODCHRGORDISCDURN sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-DURATIONUNIT sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-SUBSCRPNCHRGANDDISCACTVTNCNDN sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-BRFFUNCNAME sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-CHARACTERISTIC sy-vline 
WA_CRMS4S_SOM_PROD_API_DISC_STR-CHARACTERISTICVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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