ABAP Select data from SAP table MDG_BS_MAT_S_MAT_PDF 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_MAT_PDF 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_MAT_PDF. 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_MAT_PDF 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_MAT_PDF TYPE STANDARD TABLE OF MDG_BS_MAT_S_MAT_PDF,
      WA_MDG_BS_MAT_S_MAT_PDF TYPE MDG_BS_MAT_S_MAT_PDF,
      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_MAT_PDF> TYPE MDG_BS_MAT_S_MAT_PDF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDG_BS_MAT_S_MAT_PDF
*  INTO TABLE @DATA(IT_MDG_BS_MAT_S_MAT_PDF2).
*--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_MAT_PDF INDEX 1 INTO DATA(WA_MDG_BS_MAT_S_MAT_PDF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDG_BS_MAT_S_MAT_PDF>-MARA_TAB = 1.
<MDG_BS_MAT_S_MAT_PDF>-MARA_X_TAB = 1.
<MDG_BS_MAT_S_MAT_PDF>-MAKT_TAB = 1.
<MDG_BS_MAT_S_MAT_PDF>-MAKT_X_TAB = 1.
<MDG_BS_MAT_S_MAT_PDF>-MARC_TAB = 1.

ENDLOOP.

LOOP AT IT_MDG_BS_MAT_S_MAT_PDF INTO WA_MDG_BS_MAT_S_MAT_PDF.
*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_MAT_PDF-MARC_X_TAB, sy-vline,
  WA_MDG_BS_MAT_S_MAT_PDF-MARD_TAB, sy-vline,
  WA_MDG_BS_MAT_S_MAT_PDF-MARD_X_TAB, sy-vline,
  WA_MDG_BS_MAT_S_MAT_PDF-MARM_TAB, sy-vline,
  WA_MDG_BS_MAT_S_MAT_PDF-MARM_X_TAB, sy-vline,
  WA_MDG_BS_MAT_S_MAT_PDF-MEAN_TAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDG_BS_MAT_S_MAT_PDF 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_MAT_PDF 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_MAT_PDF INTO WA_MDG_BS_MAT_S_MAT_PDF.


*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 CURRENT_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MDG_BS_MAT_S_MAT_PDF-CURRENT_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDG_BS_MAT_S_MAT_PDF-CURRENT_MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDG_BS_MAT_S_MAT_PDF-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDG_BS_MAT_S_MAT_PDF-DOKNR.
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_MDG_BS_MAT_S_MAT_PDF_STR, 
MARA_TAB TYPE STRING,
MARA_X_TAB TYPE STRING,
MAKT_TAB TYPE STRING,
MAKT_X_TAB TYPE STRING,
MARC_TAB TYPE STRING,
MARC_X_TAB TYPE STRING,
MARD_TAB TYPE STRING,
MARD_X_TAB TYPE STRING,
MARM_TAB TYPE STRING,
MARM_X_TAB TYPE STRING,
MEAN_TAB TYPE STRING,
MEAN_X_TAB TYPE STRING,
MLAN_PURCHASE_TAB TYPE STRING,
MLAN_PURCHASE_X_TAB TYPE STRING,
MLAN_SALES_TAB TYPE STRING,
MLAN_SALES_X_TAB TYPE STRING,
MBEW_TAB TYPE STRING,
MBEW_X_TAB TYPE STRING,
MLGN_TAB TYPE STRING,
MLGN_X_TAB TYPE STRING,
MLGT_TAB TYPE STRING,
MLGT_X_TAB TYPE STRING,
MPGD_TAB TYPE STRING,
MPGD_X_TAB TYPE STRING,
MPOP_TAB TYPE STRING,
MPOP_X_TAB TYPE STRING,
MVKE_TAB TYPE STRING,
MVKE_X_TAB TYPE STRING,
NOTES_TAB TYPE STRING,
NOTES_X_TAB TYPE STRING,
SALES_NOTES_TAB TYPE STRING,
SALES_NOTES_X_TAB TYPE STRING,
CLASSIFICATION_TAB TYPE STRING,
BSCDATTXT_TAB TYPE STRING,
QINSPTXT_TAB TYPE STRING,
PURCHTXT_TAB TYPE STRING,
INTCMNT_TAB TYPE STRING,
CLF_ERROR TYPE STRING,
CREQUEST TYPE STRING,
PLANT_NOTES_TAB TYPE STRING,
PLANT_NOTES_X_TAB TYPE STRING,
HEADER TYPE STRING,
TEXT TYPE STRING,
CURRENT_BUKRS TYPE STRING,
CURRENT_BWKEY TYPE STRING,
CURRENT_BWTAR TYPE STRING,
CURRENT_LGNUM TYPE STRING,
CURRENT_LGORT TYPE STRING,
CURRENT_LGTYP TYPE STRING,
CURRENT_MATNR TYPE STRING,
CURRENT_VAL_AREA TYPE STRING,
CURRENT_VKORG TYPE STRING,
CURRENT_VTWEG TYPE STRING,
CURRENT_WERKS TYPE STRING,
CURRENT_DOC TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DOKOB TYPE STRING,
OBZAE TYPE STRING,
OBJKY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDG_BS_MAT_S_MAT_PDF_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_MAT_PDF_STR-MARA_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARA_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MAKT_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MAKT_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARC_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARC_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARD_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARD_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARM_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MARM_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MEAN_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MEAN_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLAN_PURCHASE_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLAN_PURCHASE_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLAN_SALES_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLAN_SALES_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MBEW_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MBEW_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLGN_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLGN_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLGT_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MLGT_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MPGD_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MPGD_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MPOP_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MPOP_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MVKE_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-MVKE_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-NOTES_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-NOTES_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-SALES_NOTES_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-SALES_NOTES_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CLASSIFICATION_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-BSCDATTXT_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-QINSPTXT_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-PURCHTXT_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-INTCMNT_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CLF_ERROR sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CREQUEST sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-PLANT_NOTES_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-PLANT_NOTES_X_TAB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-HEADER sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-TEXT sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_BUKRS sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_BWKEY sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_BWTAR sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_LGNUM sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_LGORT sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_LGTYP sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_MATNR sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_VAL_AREA sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_VKORG sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_VTWEG sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_WERKS sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-CURRENT_DOC sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-DOKAR sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-DOKNR sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-DOKVR sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-DOKTL sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-DOKOB sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-OBZAE sy-vline 
WA_MDG_BS_MAT_S_MAT_PDF_STR-OBJKY sy-vline      INTO ld_text SEPARATED BY SPACE.

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