ABAP Select data from SAP table MARKDOWN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MARKDOWN
*  INTO TABLE @DATA(IT_MARKDOWN2).
*--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_MARKDOWN INDEX 1 INTO DATA(WA_MARKDOWN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MARKDOWN>-ARTNR = 1.
<MARKDOWN>-MATKL = 1.
<MARKDOWN>-ARTBZ = 1.
<MARKDOWN>-RETOH = 1.
<MARKDOWN>-RETCU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MARKDOWN-UNIOH, sy-vline,
  WA_MARKDOWN-ORDOH, sy-vline,
  WA_MARKDOWN-UNITA, sy-vline,
  WA_MARKDOWN-VKORG, sy-vline,
  WA_MARKDOWN-VTWEG, sy-vline,
  WA_MARKDOWN-MARKD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MARKDOWN 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_MARKDOWN 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_MARKDOWN INTO WA_MARKDOWN.


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

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

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

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MARKDOWN-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MARKDOWN-VRKME.
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_MARKDOWN_STR, 
ARTNR TYPE STRING,
MATKL TYPE STRING,
ARTBZ TYPE STRING,
RETOH TYPE STRING,
RETCU TYPE STRING,
UNIOH TYPE STRING,
ORDOH TYPE STRING,
UNITA TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
MARKD TYPE STRING,
REFPE TYPE STRING,
REFUM TYPE STRING,
REFMG TYPE STRING,
PLAPE TYPE STRING,
UMSCU TYPE STRING,
PLAUM TYPE STRING,
UNITP TYPE STRING,
PLAMG TYPE STRING,
PLRAT TYPE STRING,
ACTUM TYPE STRING,
ACTMG TYPE STRING,
PRICE TYPE STRING,
ACTIV TYPE STRING,
DATEF TYPE STRING,
DATEE TYPE STRING,
PROFI TYPE STRING,
PROMO TYPE STRING,
SEASO TYPE STRING,
STORG TYPE STRING,
OFFST TYPE STRING,
MARKU TYPE STRING,
STORE TYPE STRING,
MARGIN TYPE STRING,
MARGINV TYPE STRING,
WEEOH TYPE STRING,
SALEA TYPE STRING,
GDRCV TYPE STRING,
SVARI TYPE STRING,
SVINF TYPE STRING,
SVARITXT TYPE STRING,
ISTXT TYPE STRING,
NUMKI TYPE STRING,
NUMKE TYPE STRING,
ANZWRK TYPE STRING,
ABWPSALW TYPE STRING,
ABWPSALC TYPE STRING,
ABWSPWRT TYPE STRING,
ABWMAHIT TYPE STRING,
ABWPRESW TYPE STRING,
ABWPSALA TYPE STRING,
ABWMDQTE TYPE STRING,
UMSGVO TYPE STRING,
GRPTXT TYPE STRING,
CURVP TYPE STRING,
VRKME TYPE STRING,
MPRTX TYPE STRING,
VKMETX TYPE STRING,
BEMETX TYPE STRING,
DATAB TYPE STRING,
KZ_STOCK TYPE STRING,
KZ_BTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MARKDOWN_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_MARKDOWN_STR-ARTNR sy-vline 
WA_MARKDOWN_STR-MATKL sy-vline 
WA_MARKDOWN_STR-ARTBZ sy-vline 
WA_MARKDOWN_STR-RETOH sy-vline 
WA_MARKDOWN_STR-RETCU sy-vline 
WA_MARKDOWN_STR-UNIOH sy-vline 
WA_MARKDOWN_STR-ORDOH sy-vline 
WA_MARKDOWN_STR-UNITA sy-vline 
WA_MARKDOWN_STR-VKORG sy-vline 
WA_MARKDOWN_STR-VTWEG sy-vline 
WA_MARKDOWN_STR-MARKD sy-vline 
WA_MARKDOWN_STR-REFPE sy-vline 
WA_MARKDOWN_STR-REFUM sy-vline 
WA_MARKDOWN_STR-REFMG sy-vline 
WA_MARKDOWN_STR-PLAPE sy-vline 
WA_MARKDOWN_STR-UMSCU sy-vline 
WA_MARKDOWN_STR-PLAUM sy-vline 
WA_MARKDOWN_STR-UNITP sy-vline 
WA_MARKDOWN_STR-PLAMG sy-vline 
WA_MARKDOWN_STR-PLRAT sy-vline 
WA_MARKDOWN_STR-ACTUM sy-vline 
WA_MARKDOWN_STR-ACTMG sy-vline 
WA_MARKDOWN_STR-PRICE sy-vline 
WA_MARKDOWN_STR-ACTIV sy-vline 
WA_MARKDOWN_STR-DATEF sy-vline 
WA_MARKDOWN_STR-DATEE sy-vline 
WA_MARKDOWN_STR-PROFI sy-vline 
WA_MARKDOWN_STR-PROMO sy-vline 
WA_MARKDOWN_STR-SEASO sy-vline 
WA_MARKDOWN_STR-STORG sy-vline 
WA_MARKDOWN_STR-OFFST sy-vline 
WA_MARKDOWN_STR-MARKU sy-vline 
WA_MARKDOWN_STR-STORE sy-vline 
WA_MARKDOWN_STR-MARGIN sy-vline 
WA_MARKDOWN_STR-MARGINV sy-vline 
WA_MARKDOWN_STR-WEEOH sy-vline 
WA_MARKDOWN_STR-SALEA sy-vline 
WA_MARKDOWN_STR-GDRCV sy-vline 
WA_MARKDOWN_STR-SVARI sy-vline 
WA_MARKDOWN_STR-SVINF sy-vline 
WA_MARKDOWN_STR-SVARITXT sy-vline 
WA_MARKDOWN_STR-ISTXT sy-vline 
WA_MARKDOWN_STR-NUMKI sy-vline 
WA_MARKDOWN_STR-NUMKE sy-vline 
WA_MARKDOWN_STR-ANZWRK sy-vline 
WA_MARKDOWN_STR-ABWPSALW sy-vline 
WA_MARKDOWN_STR-ABWPSALC sy-vline 
WA_MARKDOWN_STR-ABWSPWRT sy-vline 
WA_MARKDOWN_STR-ABWMAHIT sy-vline 
WA_MARKDOWN_STR-ABWPRESW sy-vline 
WA_MARKDOWN_STR-ABWPSALA sy-vline 
WA_MARKDOWN_STR-ABWMDQTE sy-vline 
WA_MARKDOWN_STR-UMSGVO sy-vline 
WA_MARKDOWN_STR-GRPTXT sy-vline 
WA_MARKDOWN_STR-CURVP sy-vline 
WA_MARKDOWN_STR-VRKME sy-vline 
WA_MARKDOWN_STR-MPRTX sy-vline 
WA_MARKDOWN_STR-VKMETX sy-vline 
WA_MARKDOWN_STR-BEMETX sy-vline 
WA_MARKDOWN_STR-DATAB sy-vline 
WA_MARKDOWN_STR-KZ_STOCK sy-vline 
WA_MARKDOWN_STR-KZ_BTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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