ABAP Select data from SAP table /MDGMM/_S_MM_PP_MARCMRPLS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MDGMM/_S_MM_PP_MARCMRPLS 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 /MDGMM/_S_MM_PP_MARCMRPLS. 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 /MDGMM/_S_MM_PP_MARCMRPLS 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_/MDGMM/_S_MM_PP_MARCMRPLS TYPE STANDARD TABLE OF /MDGMM/_S_MM_PP_MARCMRPLS,
      WA_/MDGMM/_S_MM_PP_MARCMRPLS TYPE /MDGMM/_S_MM_PP_MARCMRPLS,
      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: </MDGMM/_S_MM_PP_MARCMRPLS> TYPE /MDGMM/_S_MM_PP_MARCMRPLS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MDGMM/_S_MM_PP_MARCMRPLS
  INTO TABLE IT_/MDGMM/_S_MM_PP_MARCMRPLS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MDGMM/_S_MM_PP_MARCMRPLS
*  INTO TABLE @DATA(IT_/MDGMM/_S_MM_PP_MARCMRPLS2).
*--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_/MDGMM/_S_MM_PP_MARCMRPLS INDEX 1 INTO DATA(WA_/MDGMM/_S_MM_PP_MARCMRPLS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MDGMM/_S_MM_PP_MARCMRPLS ASSIGNING </MDGMM/_S_MM_PP_MARCMRPLS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MDGMM/_S_MM_PP_MARCMRPLS>-MATERIAL = 1.
</MDGMM/_S_MM_PP_MARCMRPLS>-WERKS = 1.
</MDGMM/_S_MM_PP_MARCMRPLS>-AUSSS = 1.
</MDGMM/_S_MM_PP_MARCMRPLS>-BSTFE = 1.
</MDGMM/_S_MM_PP_MARCMRPLS>-BSTMA = 1.

ENDLOOP.

LOOP AT IT_/MDGMM/_S_MM_PP_MARCMRPLS INTO WA_/MDGMM/_S_MM_PP_MARCMRPLS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MDGMM/_S_MM_PP_MARCMRPLS-BSTMI, sy-vline,
  WA_/MDGMM/_S_MM_PP_MARCMRPLS-BSTRF, sy-vline,
  WA_/MDGMM/_S_MM_PP_MARCMRPLS-DISLS, sy-vline,
  WA_/MDGMM/_S_MM_PP_MARCMRPLS-EISBE, sy-vline,
  WA_/MDGMM/_S_MM_PP_MARCMRPLS-EISLO, sy-vline,
  WA_/MDGMM/_S_MM_PP_MARCMRPLS-LAGMRPLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MDGMM/_S_MM_PP_MARCMRPLS 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_/MDGMM/_S_MM_PP_MARCMRPLS 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_/MDGMM/_S_MM_PP_MARCMRPLS INTO WA_/MDGMM/_S_MM_PP_MARCMRPLS.


*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 MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/MDGMM/_S_MM_PP_MARCMRPLS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDGMM/_S_MM_PP_MARCMRPLS-MATERIAL.
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_/MDGMM/_S_MM_PP_MARCMRPLS_STR, 
MATERIAL TYPE STRING,
WERKS TYPE STRING,
AUSSS TYPE STRING,
BSTFE TYPE STRING,
BSTMA TYPE STRING,
BSTMI TYPE STRING,
BSTRF TYPE STRING,
DISLS TYPE STRING,
EISBE TYPE STRING,
EISLO TYPE STRING,
LAGMRPLS TYPE STRING,
LGRAD TYPE STRING,
LOSFX TYPE STRING,
MABST TYPE STRING,
MEGMRPLS TYPE STRING,
RDPMRPLS TYPE STRING,
RWPMRPLS TYPE STRING,
SHFLG TYPE STRING,
SHPMRPLS TYPE STRING,
SHZET TYPE STRING,
TAKZT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MDGMM/_S_MM_PP_MARCMRPLS_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_/MDGMM/_S_MM_PP_MARCMRPLS_STR-MATERIAL sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-WERKS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-AUSSS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-BSTFE sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-BSTMA sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-BSTMI sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-BSTRF sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-DISLS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-EISBE sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-EISLO sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-LAGMRPLS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-LGRAD sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-LOSFX sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-MABST sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-MEGMRPLS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-RDPMRPLS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-RWPMRPLS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-SHFLG sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-SHPMRPLS sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-SHZET sy-vline 
WA_/MDGMM/_S_MM_PP_MARCMRPLS_STR-TAKZT sy-vline      INTO ld_text SEPARATED BY SPACE.

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