ABAP Select data from SAP table FCOMS_GROUP_AT_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOMS_GROUP_AT_ATTR
*  INTO TABLE @DATA(IT_FCOMS_GROUP_AT_ATTR2).
*--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_FCOMS_GROUP_AT_ATTR INDEX 1 INTO DATA(WA_FCOMS_GROUP_AT_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOMS_GROUP_AT_ATTR>-MANDT = 1.
<FCOMS_GROUP_AT_ATTR>-UUID = 1.
<FCOMS_GROUP_AT_ATTR>-HLEVEL = 1.
<FCOMS_GROUP_AT_ATTR>-SETID = 1.
<FCOMS_GROUP_AT_ATTR>-SHORTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOMS_GROUP_AT_ATTR-CLASS, sy-vline,
  WA_FCOMS_GROUP_AT_ATTR-TYPE, sy-vline,
  WA_FCOMS_GROUP_AT_ATTR-BEZEI, sy-vline,
  WA_FCOMS_GROUP_AT_ATTR-DESCRIPT, sy-vline,
  WA_FCOMS_GROUP_AT_ATTR-ICON, sy-vline,
  WA_FCOMS_GROUP_AT_ATTR-AUTHGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOMS_GROUP_AT_ATTR 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_FCOMS_GROUP_AT_ATTR 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_FCOMS_GROUP_AT_ATTR INTO WA_FCOMS_GROUP_AT_ATTR.


*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 ISOLA, internal->external for field OLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_GROUP_AT_ATTR-OLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_GROUP_AT_ATTR-OLANGU.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field TARKZ_I
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_GROUP_AT_ATTR-TARKZ_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_GROUP_AT_ATTR-TARKZ_I.
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_FCOMS_GROUP_AT_ATTR_STR, 
MANDT TYPE STRING,
UUID TYPE STRING,
HLEVEL TYPE STRING,
SETID TYPE STRING,
SHORTNAME TYPE STRING,
CLASS TYPE STRING,
TYPE TYPE STRING,
BEZEI TYPE STRING,
DESCRIPT TYPE STRING,
ICON TYPE STRING,
AUTHGR TYPE STRING,
PRTCLASS TYPE STRING,
RVALUE TYPE STRING,
OLANGU TYPE STRING,
VFROM TYPE STRING,
VFROM_T TYPE STRING,
VTO TYPE STRING,
VTO_T TYPE STRING,
CD_CC_REF TYPE STRING,
XDYNAMIC TYPE STRING,
STANDARD TYPE STRING,
CREUSER TYPE STRING,
CREDATE TYPE STRING,
CRETIME TYPE STRING,
UPDUSER TYPE STRING,
UPDDATE TYPE STRING,
UPDTIME TYPE STRING,
KOKRS TYPE STRING,
LSTAR TYPE STRING,
DATBI TYPE STRING,
DATAB TYPE STRING,
KTEXT TYPE STRING,
LTEXT TYPE STRING,
ERSDA TYPE STRING,
USNAM TYPE STRING,
SPRKZ TYPE STRING,
LEINH TYPE STRING,
KSTTY TYPE STRING,
AUSEH TYPE STRING,
AUSFK TYPE STRING,
VKSTA TYPE STRING,
LATYP TYPE STRING,
LATYPI TYPE STRING,
TARKZ TYPE STRING,
TARKZ_I TYPE STRING,
YRATE TYPE STRING,
FIXVO TYPE STRING,
MANIST TYPE STRING,
MANPLAN TYPE STRING,
MCTXT TYPE STRING,
VKSTA_TEXT TYPE STRING,
LATYP_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOMS_GROUP_AT_ATTR_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_FCOMS_GROUP_AT_ATTR_STR-MANDT sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-UUID sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-HLEVEL sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-SETID sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-SHORTNAME sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-CLASS sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-TYPE sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-BEZEI sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-DESCRIPT sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-ICON sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-AUTHGR sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-PRTCLASS sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-RVALUE sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-OLANGU sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-VFROM sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-VFROM_T sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-VTO sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-VTO_T sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-CD_CC_REF sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-XDYNAMIC sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-STANDARD sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-CREUSER sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-CREDATE sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-CRETIME sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-UPDUSER sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-UPDDATE sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-UPDTIME sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-KOKRS sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-LSTAR sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-DATBI sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-DATAB sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-KTEXT sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-LTEXT sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-ERSDA sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-USNAM sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-SPRKZ sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-LEINH sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-KSTTY sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-AUSEH sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-AUSFK sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-VKSTA sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-LATYP sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-LATYPI sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-TARKZ sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-TARKZ_I sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-YRATE sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-FIXVO sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-MANIST sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-MANPLAN sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-MCTXT sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-VKSTA_TEXT sy-vline 
WA_FCOMS_GROUP_AT_ATTR_STR-LATYP_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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