ABAP Select data from SAP table CMS_CAG_RBL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMS_CAG_RBL
*  INTO TABLE @DATA(IT_CMS_CAG_RBL2).
*--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_CMS_CAG_RBL INDEX 1 INTO DATA(WA_CMS_CAG_RBL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMS_CAG_RBL>-MANDT = 1.
<CMS_CAG_RBL>-CAG_RBL_GUID = 1.
<CMS_CAG_RBL>-CAG_POR_GUID = 1.
<CMS_CAG_RBL>-CREDITSYSTEM = 1.
<CMS_CAG_RBL>-RBL_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMS_CAG_RBL-VALID_FROM, sy-vline,
  WA_CMS_CAG_RBL-VALID_TO, sy-vline,
  WA_CMS_CAG_RBL-PRIORITY, sy-vline,
  WA_CMS_CAG_RBL-RANKING_CLASS, sy-vline,
  WA_CMS_CAG_RBL-IND_LINK_TYP, sy-vline,
  WA_CMS_CAG_RBL-IND_TRAN_COLL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMS_CAG_RBL 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_CMS_CAG_RBL 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_CMS_CAG_RBL INTO WA_CMS_CAG_RBL.


*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 RBL_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMS_CAG_RBL-RBL_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMS_CAG_RBL-RBL_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CMS_CAG_RBL-VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMS_CAG_RBL-VALID_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CMS_CAG_RBL-VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMS_CAG_RBL-VALID_TO.
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_CMS_CAG_RBL_STR, 
MANDT TYPE STRING,
CAG_RBL_GUID TYPE STRING,
CAG_POR_GUID TYPE STRING,
CREDITSYSTEM TYPE STRING,
RBL_ID TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
PRIORITY TYPE STRING,
RANKING_CLASS TYPE STRING,
IND_LINK_TYP TYPE STRING,
IND_TRAN_COLL TYPE STRING,
RBL_AMT TYPE STRING,
RBL_CURR TYPE STRING,
RBL_PCT TYPE STRING,
RBL_PORTION TYPE STRING,
REF_RBL_AMT TYPE STRING,
REF_RBL_PCT TYPE STRING,
COMPONENT_TYPE TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
SOURCEOFENTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMS_CAG_RBL_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_CMS_CAG_RBL_STR-MANDT sy-vline 
WA_CMS_CAG_RBL_STR-CAG_RBL_GUID sy-vline 
WA_CMS_CAG_RBL_STR-CAG_POR_GUID sy-vline 
WA_CMS_CAG_RBL_STR-CREDITSYSTEM sy-vline 
WA_CMS_CAG_RBL_STR-RBL_ID sy-vline 
WA_CMS_CAG_RBL_STR-VALID_FROM sy-vline 
WA_CMS_CAG_RBL_STR-VALID_TO sy-vline 
WA_CMS_CAG_RBL_STR-PRIORITY sy-vline 
WA_CMS_CAG_RBL_STR-RANKING_CLASS sy-vline 
WA_CMS_CAG_RBL_STR-IND_LINK_TYP sy-vline 
WA_CMS_CAG_RBL_STR-IND_TRAN_COLL sy-vline 
WA_CMS_CAG_RBL_STR-RBL_AMT sy-vline 
WA_CMS_CAG_RBL_STR-RBL_CURR sy-vline 
WA_CMS_CAG_RBL_STR-RBL_PCT sy-vline 
WA_CMS_CAG_RBL_STR-RBL_PORTION sy-vline 
WA_CMS_CAG_RBL_STR-REF_RBL_AMT sy-vline 
WA_CMS_CAG_RBL_STR-REF_RBL_PCT sy-vline 
WA_CMS_CAG_RBL_STR-COMPONENT_TYPE sy-vline 
WA_CMS_CAG_RBL_STR-CREATED_BY sy-vline 
WA_CMS_CAG_RBL_STR-CREATED_AT sy-vline 
WA_CMS_CAG_RBL_STR-CHANGED_BY sy-vline 
WA_CMS_CAG_RBL_STR-CHANGED_AT sy-vline 
WA_CMS_CAG_RBL_STR-SOURCEOFENTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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