ABAP Select data from SAP table EHFNDS_API_SUBSTANCE_GRPASSGMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_API_SUBSTANCE_GRPASSGMT
*  INTO TABLE @DATA(IT_EHFNDS_API_SUBSTANCE_GRPASSGMT2).
*--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_EHFNDS_API_SUBSTANCE_GRPASSGMT INDEX 1 INTO DATA(WA_EHFNDS_API_SUBSTANCE_GRPASSGMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_API_SUBSTANCE_GRPASSGMT>-SENDER_TECHNICAL_ID = 1.
<EHFNDS_API_SUBSTANCE_GRPASSGMT>-KEY = 1.
<EHFNDS_API_SUBSTANCE_GRPASSGMT>-PARENT_KEY = 1.
<EHFNDS_API_SUBSTANCE_GRPASSGMT>-ROOT_KEY = 1.
<EHFNDS_API_SUBSTANCE_GRPASSGMT>-CMPLRQVERSUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-SUBSTANCELISTUUID, sy-vline,
  WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-LISTEDSUBSTANCEGROUPUUID, sy-vline,
  WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-LISTEDSUBSTANCEGROUP, sy-vline,
  WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-LISTEDSUBSTANCE, sy-vline,
  WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-ACTIVEUUID, sy-vline,
  WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-HASACTIVEENTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_API_SUBSTANCE_GRPASSGMT 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_EHFNDS_API_SUBSTANCE_GRPASSGMT 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_EHFNDS_API_SUBSTANCE_GRPASSGMT INTO WA_EHFNDS_API_SUBSTANCE_GRPASSGMT.


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

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

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_API_SUBSTANCE_GRPASSGMT-LANGUAGE.
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_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR, 
SENDER_TECHNICAL_ID TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
CMPLRQVERSUUID TYPE STRING,
SUBSTANCELISTUUID TYPE STRING,
LISTEDSUBSTANCEGROUPUUID TYPE STRING,
LISTEDSUBSTANCEGROUP TYPE STRING,
LISTEDSUBSTANCE TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,
CHANGE_MODE TYPE STRING,
SPECIFICATION TYPE STRING,
COMPLREQ_ID TYPE STRING,
LANGUAGE TYPE STRING,
LIST_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_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_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-SENDER_TECHNICAL_ID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-KEY sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-PARENT_KEY sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-ROOT_KEY sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-CMPLRQVERSUUID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-SUBSTANCELISTUUID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-LISTEDSUBSTANCEGROUPUUID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-LISTEDSUBSTANCEGROUP sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-LISTEDSUBSTANCE sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-ACTIVEUUID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-HASACTIVEENTITY sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-ISACTIVEENTITY sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-CHANGE_MODE sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-SPECIFICATION sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-COMPLREQ_ID sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-LANGUAGE sy-vline 
WA_EHFNDS_API_SUBSTANCE_GRPASSGMT_STR-LIST_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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