ABAP Select data from SAP table MDG_BS_MAT_S_PDF_MBEW_DESC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDG_BS_MAT_S_PDF_MBEW_DESC
*  INTO TABLE @DATA(IT_MDG_BS_MAT_S_PDF_MBEW_DESC2).
*--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_MDG_BS_MAT_S_PDF_MBEW_DESC INDEX 1 INTO DATA(WA_MDG_BS_MAT_S_PDF_MBEW_DESC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDG_BS_MAT_S_PDF_MBEW_DESC>-BKLAS = 1.
<MDG_BS_MAT_S_PDF_MBEW_DESC>-BWTAR = 1.
<MDG_BS_MAT_S_PDF_MBEW_DESC>-HKMAT = 1.
<MDG_BS_MAT_S_PDF_MBEW_DESC>-HRKFT = 1.
<MDG_BS_MAT_S_PDF_MBEW_DESC>-KOSGR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDG_BS_MAT_S_PDF_MBEW_DESC-EKALR, sy-vline,
  WA_MDG_BS_MAT_S_PDF_MBEW_DESC-MLAST, sy-vline,
  WA_MDG_BS_MAT_S_PDF_MBEW_DESC-MLMAA, sy-vline,
  WA_MDG_BS_MAT_S_PDF_MBEW_DESC-ABWKZ, sy-vline,
  WA_MDG_BS_MAT_S_PDF_MBEW_DESC-MYPOL, sy-vline,
  WA_MDG_BS_MAT_S_PDF_MBEW_DESC-XLIFO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDG_BS_MAT_S_PDF_MBEW_DESC 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_MDG_BS_MAT_S_PDF_MBEW_DESC 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_MDG_BS_MAT_S_PDF_MBEW_DESC INTO WA_MDG_BS_MAT_S_PDF_MBEW_DESC.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_MDG_BS_MAT_S_PDF_MBEW_DESC_STR, 
BKLAS TYPE STRING,
BWTAR TYPE STRING,
HKMAT TYPE STRING,
HRKFT TYPE STRING,
KOSGR TYPE STRING,
EKALR TYPE STRING,
MLAST TYPE STRING,
MLMAA TYPE STRING,
ABWKZ TYPE STRING,
MYPOL TYPE STRING,
XLIFO TYPE STRING,
BWTTY TYPE STRING,
QKLAS TYPE STRING,
EKLAS TYPE STRING,
MTORG TYPE STRING,
MTUSE TYPE STRING,
OWNPR TYPE STRING,
VPRSV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDG_BS_MAT_S_PDF_MBEW_DESC_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_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-BKLAS sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-BWTAR sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-HKMAT sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-HRKFT sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-KOSGR sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-EKALR sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-MLAST sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-MLMAA sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-ABWKZ sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-MYPOL sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-XLIFO sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-BWTTY sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-QKLAS sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-EKLAS sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-MTORG sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-MTUSE sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-OWNPR sy-vline 
WA_MDG_BS_MAT_S_PDF_MBEW_DESC_STR-VPRSV sy-vline      INTO ld_text SEPARATED BY SPACE.

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