ABAP Select data from SAP table DMF_S_MARA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMF_S_MARA
*  INTO TABLE @DATA(IT_DMF_S_MARA2).
*--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_DMF_S_MARA INDEX 1 INTO DATA(WA_DMF_S_MARA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMF_S_MARA>-MATNR = 1.
<DMF_S_MARA>-SATNR = 1.
<DMF_S_MARA>-EAN11 = 1.
<DMF_S_MARA>-MEINS = 1.
<DMF_S_MARA>-MATKL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMF_S_MARA-DATAB, sy-vline,
  WA_DMF_S_MARA-ATTYP, sy-vline,
  WA_DMF_S_MARA-SIZE1, sy-vline,
  WA_DMF_S_MARA-COLOR, sy-vline,
  WA_DMF_S_MARA-BRAND_ID, sy-vline,
  WA_DMF_S_MARA-NTGEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMF_S_MARA 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_DMF_S_MARA 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_DMF_S_MARA INTO WA_DMF_S_MARA.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-EAN11.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ATINN, internal->external for field COLOR_ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-COLOR_ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-COLOR_ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field SIZE1_ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-SIZE1_ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-SIZE1_ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field SIZE2_ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-SIZE2_ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-SIZE2_ATINN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PERKZ, internal->external for field IPRKZ
CALL FUNCTION 'CONVERSION_EXIT_PERKZ_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-IPRKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-IPRKZ.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field DEFAULT_SALES_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_MARA-DEFAULT_SALES_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_MARA-DEFAULT_SALES_UNIT.
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_DMF_S_MARA_STR, 
MATNR TYPE STRING,
SATNR TYPE STRING,
EAN11 TYPE STRING,
MEINS TYPE STRING,
MATKL TYPE STRING,
DATAB TYPE STRING,
ATTYP TYPE STRING,
SIZE1 TYPE STRING,
COLOR TYPE STRING,
BRAND_ID TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
LVORM TYPE STRING,
VPREH TYPE STRING,
INHAL TYPE STRING,
INHME TYPE STRING,
MTART TYPE STRING,
ALLOW_PMAT_IGNO TYPE STRING,
SIZE2 TYPE STRING,
COLOR_ATINN TYPE STRING,
SIZE1_ATINN TYPE STRING,
SIZE2_ATINN TYPE STRING,
PLGTP TYPE STRING,
SAISO TYPE STRING,
COLOR_ATNAM TYPE STRING,
SIZE1_ATNAM TYPE STRING,
SIZE2_ATNAM TYPE STRING,
FASH_GRD TYPE STRING,
FSH_MG_AT1 TYPE STRING,
FSH_MG_AT2 TYPE STRING,
FSH_MG_AT3 TYPE STRING,
BSTME TYPE STRING,
MHDRZ TYPE STRING,
MHDLP TYPE STRING,
IPRKZ TYPE STRING,
VABME TYPE STRING,
DEFAULT_DELIVERY_UNIT TYPE STRING,
DEFAULT_SALES_UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMF_S_MARA_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_DMF_S_MARA_STR-MATNR sy-vline 
WA_DMF_S_MARA_STR-SATNR sy-vline 
WA_DMF_S_MARA_STR-EAN11 sy-vline 
WA_DMF_S_MARA_STR-MEINS sy-vline 
WA_DMF_S_MARA_STR-MATKL sy-vline 
WA_DMF_S_MARA_STR-DATAB sy-vline 
WA_DMF_S_MARA_STR-ATTYP sy-vline 
WA_DMF_S_MARA_STR-SIZE1 sy-vline 
WA_DMF_S_MARA_STR-COLOR sy-vline 
WA_DMF_S_MARA_STR-BRAND_ID sy-vline 
WA_DMF_S_MARA_STR-NTGEW sy-vline 
WA_DMF_S_MARA_STR-GEWEI sy-vline 
WA_DMF_S_MARA_STR-LVORM sy-vline 
WA_DMF_S_MARA_STR-VPREH sy-vline 
WA_DMF_S_MARA_STR-INHAL sy-vline 
WA_DMF_S_MARA_STR-INHME sy-vline 
WA_DMF_S_MARA_STR-MTART sy-vline 
WA_DMF_S_MARA_STR-ALLOW_PMAT_IGNO sy-vline 
WA_DMF_S_MARA_STR-SIZE2 sy-vline 
WA_DMF_S_MARA_STR-COLOR_ATINN sy-vline 
WA_DMF_S_MARA_STR-SIZE1_ATINN sy-vline 
WA_DMF_S_MARA_STR-SIZE2_ATINN sy-vline 
WA_DMF_S_MARA_STR-PLGTP sy-vline 
WA_DMF_S_MARA_STR-SAISO sy-vline 
WA_DMF_S_MARA_STR-COLOR_ATNAM sy-vline 
WA_DMF_S_MARA_STR-SIZE1_ATNAM sy-vline 
WA_DMF_S_MARA_STR-SIZE2_ATNAM sy-vline 
WA_DMF_S_MARA_STR-FASH_GRD sy-vline 
WA_DMF_S_MARA_STR-FSH_MG_AT1 sy-vline 
WA_DMF_S_MARA_STR-FSH_MG_AT2 sy-vline 
WA_DMF_S_MARA_STR-FSH_MG_AT3 sy-vline 
WA_DMF_S_MARA_STR-BSTME sy-vline 
WA_DMF_S_MARA_STR-MHDRZ sy-vline 
WA_DMF_S_MARA_STR-MHDLP sy-vline 
WA_DMF_S_MARA_STR-IPRKZ sy-vline 
WA_DMF_S_MARA_STR-VABME sy-vline 
WA_DMF_S_MARA_STR-DEFAULT_DELIVERY_UNIT sy-vline 
WA_DMF_S_MARA_STR-DEFAULT_SALES_UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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