ABAP Select data from SAP table WRFMATCOPYDESCRIPTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRFMATCOPYDESCRIPTION
*  INTO TABLE @DATA(IT_WRFMATCOPYDESCRIPTION2).
*--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_WRFMATCOPYDESCRIPTION INDEX 1 INTO DATA(WA_WRFMATCOPYDESCRIPTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRFMATCOPYDESCRIPTION>-FUNCTION = 1.
<WRFMATCOPYDESCRIPTION>-MATERIAL = 1.
<WRFMATCOPYDESCRIPTION>-INT_NUMBER = 1.
<WRFMATCOPYDESCRIPTION>-REF_MATL_COPY = 1.
<WRFMATCOPYDESCRIPTION>-REF_VAR_COPY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRFMATCOPYDESCRIPTION-REF_CHAR_COPY, sy-vline,
  WA_WRFMATCOPYDESCRIPTION-GEN_KEY_LIST, sy-vline,
  WA_WRFMATCOPYDESCRIPTION-KEYLIST_ALL, sy-vline,
  WA_WRFMATCOPYDESCRIPTION-KEYLIST_MVKE, sy-vline,
  WA_WRFMATCOPYDESCRIPTION-KEYLIST_MARC, sy-vline,
  WA_WRFMATCOPYDESCRIPTION-KEYLIST_MBEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRFMATCOPYDESCRIPTION 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_WRFMATCOPYDESCRIPTION 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_WRFMATCOPYDESCRIPTION INTO WA_WRFMATCOPYDESCRIPTION.


*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_WRFMATCOPYDESCRIPTION-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRFMATCOPYDESCRIPTION-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNL, internal->external for field MATERIAL_EXTERNAL
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_WRFMATCOPYDESCRIPTION-MATERIAL_EXTERNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRFMATCOPYDESCRIPTION-MATERIAL_EXTERNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATERIAL_VERSION
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_WRFMATCOPYDESCRIPTION-MATERIAL_VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRFMATCOPYDESCRIPTION-MATERIAL_VERSION.
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_WRFMATCOPYDESCRIPTION_STR, 
FUNCTION TYPE STRING,
MATERIAL TYPE STRING,
INT_NUMBER TYPE STRING,
REF_MATL_COPY TYPE STRING,
REF_VAR_COPY TYPE STRING,
REF_CHAR_COPY TYPE STRING,
GEN_KEY_LIST TYPE STRING,
KEYLIST_ALL TYPE STRING,
KEYLIST_MVKE TYPE STRING,
KEYLIST_MARC TYPE STRING,
KEYLIST_MBEW TYPE STRING,
KEYLIST_MARD TYPE STRING,
KEYLIST_MLGN TYPE STRING,
KEYLIST_MLGT TYPE STRING,
COPY_ALL_MAT TYPE STRING,
COPY_MARA TYPE STRING,
COPY_MAW1 TYPE STRING,
COPY_MLAN TYPE STRING,
COPY_MAKT TYPE STRING,
COPY_MARM TYPE STRING,
COPY_MAMT TYPE STRING,
COPY_MALG TYPE STRING,
COPY_MVKE TYPE STRING,
COPY_MARC TYPE STRING,
COPY_MBEW TYPE STRING,
COPY_MPOP TYPE STRING,
COPY_MPRW TYPE STRING,
COPY_MARD TYPE STRING,
COPY_MLGN TYPE STRING,
COPY_MLGT TYPE STRING,
COPY_WLK2 TYPE STRING,
COPY_LTXT_GRUN TYPE STRING,
COPY_LTXT_BEST TYPE STRING,
COPY_LTXT_PRUE TYPE STRING,
COPY_LTXT_IVER TYPE STRING,
COPY_INFO_CHAR TYPE STRING,
COPY_ALL_OTHER TYPE STRING,
COPY_WLK1 TYPE STRING,
COPY_WTADDI TYPE STRING,
COPY_EORD TYPE STRING,
COPY_EINA TYPE STRING,
COPY_PB00 TYPE STRING,
COPY_WRPP TYPE STRING,
COPY_WRPL TYPE STRING,
COPY_WYT2M TYPE STRING,
COPY_CALP TYPE STRING,
COPY_MAST TYPE STRING,
COPY_MATGRP TYPE STRING,
COPY_FOLUP TYPE STRING,
SAPGUI_PROGRESS TYPE STRING,
HIER_ID TYPE STRING,
NODE_ID TYPE STRING,
OPTIMIZE_PLANT TYPE STRING,
MATERIAL_EXTERNAL TYPE STRING,
MATERIAL_GUID TYPE STRING,
MATERIAL_VERSION TYPE STRING,
COPY_FSH_SEASONS_MAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRFMATCOPYDESCRIPTION_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_WRFMATCOPYDESCRIPTION_STR-FUNCTION sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-MATERIAL sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-INT_NUMBER sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-REF_MATL_COPY sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-REF_VAR_COPY sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-REF_CHAR_COPY sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-GEN_KEY_LIST sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_ALL sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_MVKE sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_MARC sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_MBEW sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_MARD sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_MLGN sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-KEYLIST_MLGT sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_ALL_MAT sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MARA sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MAW1 sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MLAN sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MAKT sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MARM sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MAMT sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MALG sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MVKE sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MARC sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MBEW sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MPOP sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MPRW sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MARD sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MLGN sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MLGT sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_WLK2 sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_LTXT_GRUN sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_LTXT_BEST sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_LTXT_PRUE sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_LTXT_IVER sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_INFO_CHAR sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_ALL_OTHER sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_WLK1 sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_WTADDI sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_EORD sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_EINA sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_PB00 sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_WRPP sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_WRPL sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_WYT2M sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_CALP sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MAST sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_MATGRP sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_FOLUP sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-SAPGUI_PROGRESS sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-HIER_ID sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-NODE_ID sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-OPTIMIZE_PLANT sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-MATERIAL_EXTERNAL sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-MATERIAL_GUID sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-MATERIAL_VERSION sy-vline 
WA_WRFMATCOPYDESCRIPTION_STR-COPY_FSH_SEASONS_MAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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