ABAP Select data from SAP table IFMRKEVWN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMRKEVWN
*  INTO TABLE @DATA(IT_IFMRKEVWN2).
*--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_IFMRKEVWN INDEX 1 INTO DATA(WA_IFMRKEVWN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMRKEVWN>-HHSTELLE = 1.
<IFMRKEVWN>-NR_BEZEICH = 1.
<IFMRKEVWN>-GRUPP_NR = 1.
<IFMRKEVWN>-BEZEICH = 1.
<IFMRKEVWN>-BESCHREIB1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMRKEVWN-BESCHREIB2, sy-vline,
  WA_IFMRKEVWN-FICTR, sy-vline,
  WA_IFMRKEVWN-FOND, sy-vline,
  WA_IFMRKEVWN-WAERS, sy-vline,
  WA_IFMRKEVWN-HSART, sy-vline,
  WA_IFMRKEVWN-POTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMRKEVWN 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_IFMRKEVWN 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_IFMRKEVWN INTO WA_IFMRKEVWN.


*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 FIPEX, internal->external for field HHSTELLE
CALL FUNCTION 'CONVERSION_EXIT_FIPEX_OUTPUT'
  EXPORTING
    input =                      WA_IFMRKEVWN-HHSTELLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRKEVWN-HHSTELLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPUP
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_IFMRKEVWN-FIPUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRKEVWN-FIPUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FIPEX, internal->external for field BUDKZ
CALL FUNCTION 'CONVERSION_EXIT_FIPEX_OUTPUT'
  EXPORTING
    input =                      WA_IFMRKEVWN-BUDKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRKEVWN-BUDKZ.
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_IFMRKEVWN_STR, 
HHSTELLE TYPE STRING,
NR_BEZEICH TYPE STRING,
GRUPP_NR TYPE STRING,
BEZEICH TYPE STRING,
BESCHREIB1 TYPE STRING,
BESCHREIB2 TYPE STRING,
FICTR TYPE STRING,
FOND TYPE STRING,
WAERS TYPE STRING,
HSART TYPE STRING,
POTYP TYPE STRING,
HIE_ID TYPE STRING,
PLEVL TYPE STRING,
FIPUP TYPE STRING,
HSTTEXT1 TYPE STRING,
HSTTEXT2 TYPE STRING,
HSTTEXT3 TYPE STRING,
ZB_PLJ_O TYPE STRING,
ZB_PLJ_N TYPE STRING,
ZB_PLJ_S TYPE STRING,
OB_LFDJ TYPE STRING,
ZB_LFDJ_O TYPE STRING,
ZB_LFDJ_N TYPE STRING,
ZB_LFDJ_S TYPE STRING,
RE_VOR TYPE STRING,
RE_3 TYPE STRING,
RE_4 TYPE STRING,
BEZIRK TYPE STRING,
EFICTR TYPE STRING,
BUDKZ TYPE STRING,
BSAMT TYPE STRING,
BTAMT TYPE STRING,
ERL_TEXT TYPE STRING,
FLG_SUMME TYPE STRING,
EINZELPLT1 TYPE STRING,
EINZELPLT2 TYPE STRING,
ABSCHNT1 TYPE STRING,
ABSCHNT2 TYPE STRING,
UABSCHT1 TYPE STRING,
UABSCHT2 TYPE STRING,
UABSCHT3 TYPE STRING,
XSNROL TYPE STRING,
PRAEFIX TYPE STRING,
GLD TYPE STRING,
EPL TYPE STRING,
ABSCHN TYPE STRING,
UABSCH TYPE STRING,
GRUPPE TYPE STRING,
HGR TYPE STRING,
GRP TYPE STRING,
UGR TYPE STRING,
MASS TYPE STRING,
HMASS TYPE STRING,
MASSN TYPE STRING,
UMASS TYPE STRING,
OBJ TYPE STRING,
PRUEFZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMRKEVWN_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_IFMRKEVWN_STR-HHSTELLE sy-vline 
WA_IFMRKEVWN_STR-NR_BEZEICH sy-vline 
WA_IFMRKEVWN_STR-GRUPP_NR sy-vline 
WA_IFMRKEVWN_STR-BEZEICH sy-vline 
WA_IFMRKEVWN_STR-BESCHREIB1 sy-vline 
WA_IFMRKEVWN_STR-BESCHREIB2 sy-vline 
WA_IFMRKEVWN_STR-FICTR sy-vline 
WA_IFMRKEVWN_STR-FOND sy-vline 
WA_IFMRKEVWN_STR-WAERS sy-vline 
WA_IFMRKEVWN_STR-HSART sy-vline 
WA_IFMRKEVWN_STR-POTYP sy-vline 
WA_IFMRKEVWN_STR-HIE_ID sy-vline 
WA_IFMRKEVWN_STR-PLEVL sy-vline 
WA_IFMRKEVWN_STR-FIPUP sy-vline 
WA_IFMRKEVWN_STR-HSTTEXT1 sy-vline 
WA_IFMRKEVWN_STR-HSTTEXT2 sy-vline 
WA_IFMRKEVWN_STR-HSTTEXT3 sy-vline 
WA_IFMRKEVWN_STR-ZB_PLJ_O sy-vline 
WA_IFMRKEVWN_STR-ZB_PLJ_N sy-vline 
WA_IFMRKEVWN_STR-ZB_PLJ_S sy-vline 
WA_IFMRKEVWN_STR-OB_LFDJ sy-vline 
WA_IFMRKEVWN_STR-ZB_LFDJ_O sy-vline 
WA_IFMRKEVWN_STR-ZB_LFDJ_N sy-vline 
WA_IFMRKEVWN_STR-ZB_LFDJ_S sy-vline 
WA_IFMRKEVWN_STR-RE_VOR sy-vline 
WA_IFMRKEVWN_STR-RE_3 sy-vline 
WA_IFMRKEVWN_STR-RE_4 sy-vline 
WA_IFMRKEVWN_STR-BEZIRK sy-vline 
WA_IFMRKEVWN_STR-EFICTR sy-vline 
WA_IFMRKEVWN_STR-BUDKZ sy-vline 
WA_IFMRKEVWN_STR-BSAMT sy-vline 
WA_IFMRKEVWN_STR-BTAMT sy-vline 
WA_IFMRKEVWN_STR-ERL_TEXT sy-vline 
WA_IFMRKEVWN_STR-FLG_SUMME sy-vline 
WA_IFMRKEVWN_STR-EINZELPLT1 sy-vline 
WA_IFMRKEVWN_STR-EINZELPLT2 sy-vline 
WA_IFMRKEVWN_STR-ABSCHNT1 sy-vline 
WA_IFMRKEVWN_STR-ABSCHNT2 sy-vline 
WA_IFMRKEVWN_STR-UABSCHT1 sy-vline 
WA_IFMRKEVWN_STR-UABSCHT2 sy-vline 
WA_IFMRKEVWN_STR-UABSCHT3 sy-vline 
WA_IFMRKEVWN_STR-XSNROL sy-vline 
WA_IFMRKEVWN_STR-PRAEFIX sy-vline 
WA_IFMRKEVWN_STR-GLD sy-vline 
WA_IFMRKEVWN_STR-EPL sy-vline 
WA_IFMRKEVWN_STR-ABSCHN sy-vline 
WA_IFMRKEVWN_STR-UABSCH sy-vline 
WA_IFMRKEVWN_STR-GRUPPE sy-vline 
WA_IFMRKEVWN_STR-HGR sy-vline 
WA_IFMRKEVWN_STR-GRP sy-vline 
WA_IFMRKEVWN_STR-UGR sy-vline 
WA_IFMRKEVWN_STR-MASS sy-vline 
WA_IFMRKEVWN_STR-HMASS sy-vline 
WA_IFMRKEVWN_STR-MASSN sy-vline 
WA_IFMRKEVWN_STR-UMASS sy-vline 
WA_IFMRKEVWN_STR-OBJ sy-vline 
WA_IFMRKEVWN_STR-PRUEFZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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