ABAP Select data from SAP table MDALV_MD73_PBKD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MDALV_MD73_PBKD 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 MDALV_MD73_PBKD. 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 MDALV_MD73_PBKD 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_MDALV_MD73_PBKD TYPE STANDARD TABLE OF MDALV_MD73_PBKD,
      WA_MDALV_MD73_PBKD TYPE MDALV_MD73_PBKD,
      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: <MDALV_MD73_PBKD> TYPE MDALV_MD73_PBKD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MDALV_MD73_PBKD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MDALV_MD73_PBKD
  INTO TABLE IT_MDALV_MD73_PBKD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDALV_MD73_PBKD
*  INTO TABLE @DATA(IT_MDALV_MD73_PBKD2).
*--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_MDALV_MD73_PBKD INDEX 1 INTO DATA(WA_MDALV_MD73_PBKD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MDALV_MD73_PBKD ASSIGNING <MDALV_MD73_PBKD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDALV_MD73_PBKD>-BDZEI = 1.
<MDALV_MD73_PBKD>-PDATU = 1.
<MDALV_MD73_PBKD>-ENTLU = 1.
<MDALV_MD73_PBKD>-EDATU = 1.
<MDALV_MD73_PBKD>-PLNMG = 1.

ENDLOOP.

LOOP AT IT_MDALV_MD73_PBKD INTO WA_MDALV_MD73_PBKD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDALV_MD73_PBKD-ENTMG, sy-vline,
  WA_MDALV_MD73_PBKD-VRMNG, sy-vline,
  WA_MDALV_MD73_PBKD-TXTET, sy-vline,
  WA_MDALV_MD73_PBKD-MEINS, sy-vline,
  WA_MDALV_MD73_PBKD-EDATU_KD, sy-vline,
  WA_MDALV_MD73_PBKD-PDATU_KD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDALV_MD73_PBKD 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_MDALV_MD73_PBKD 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_MDALV_MD73_PBKD INTO WA_MDALV_MD73_PBKD.


*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 CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MDALV_MD73_PBKD-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDALV_MD73_PBKD-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field VPMAT_KD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MDALV_MD73_PBKD-VPMAT_KD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDALV_MD73_PBKD-VPMAT_KD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF_KD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDALV_MD73_PBKD-KDAUF_KD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDALV_MD73_PBKD-KDAUF_KD.
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_MDALV_MD73_PBKD_STR, 
BDZEI TYPE STRING,
PDATU TYPE STRING,
ENTLU TYPE STRING,
EDATU TYPE STRING,
PLNMG TYPE STRING,
ENTMG TYPE STRING,
VRMNG TYPE STRING,
TXTET TYPE STRING,
MEINS TYPE STRING,
EDATU_KD TYPE STRING,
PDATU_KD TYPE STRING,
DELB0_KD TYPE STRING,
EXTRA_KD TYPE STRING,
VPMAT_KD TYPE STRING,
VPWRK_KD TYPE STRING,
VRMNG_KD TYPE STRING,
RSNUM_KD TYPE STRING,
RSPOS_KD TYPE STRING,
KDAUF_KD TYPE STRING,
KDPOS_KD TYPE STRING,
SORT2_KD TYPE STRING,
DAT00_KD TYPE STRING,
UMREF_KD TYPE STRING,
KDURP_KD TYPE STRING,
BDART_KD TYPE STRING,
POSNR_KD TYPE STRING,
SGT_RCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDALV_MD73_PBKD_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_MDALV_MD73_PBKD_STR-BDZEI sy-vline 
WA_MDALV_MD73_PBKD_STR-PDATU sy-vline 
WA_MDALV_MD73_PBKD_STR-ENTLU sy-vline 
WA_MDALV_MD73_PBKD_STR-EDATU sy-vline 
WA_MDALV_MD73_PBKD_STR-PLNMG sy-vline 
WA_MDALV_MD73_PBKD_STR-ENTMG sy-vline 
WA_MDALV_MD73_PBKD_STR-VRMNG sy-vline 
WA_MDALV_MD73_PBKD_STR-TXTET sy-vline 
WA_MDALV_MD73_PBKD_STR-MEINS sy-vline 
WA_MDALV_MD73_PBKD_STR-EDATU_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-PDATU_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-DELB0_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-EXTRA_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-VPMAT_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-VPWRK_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-VRMNG_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-RSNUM_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-RSPOS_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-KDAUF_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-KDPOS_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-SORT2_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-DAT00_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-UMREF_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-KDURP_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-BDART_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-POSNR_KD sy-vline 
WA_MDALV_MD73_PBKD_STR-SGT_RCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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