ABAP Select data from SAP table WES_S_FILTER_ARTNR_WAKP_DS_PRO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WES_S_FILTER_ARTNR_WAKP_DS_PRO
*  INTO TABLE @DATA(IT_WES_S_FILTER_ARTNR_WAKP_DS_PRO2).
*--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_WES_S_FILTER_ARTNR_WAKP_DS_PRO INDEX 1 INTO DATA(WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WES_S_FILTER_ARTNR_WAKP_DS_PRO>-AKTNR = 1.
<WES_S_FILTER_ARTNR_WAKP_DS_PRO>-ARTNR = 1.
<WES_S_FILTER_ARTNR_WAKP_DS_PRO>-MEBME = 1.
<WES_S_FILTER_ARTNR_WAKP_DS_PRO>-SATNR = 1.
<WES_S_FILTER_ARTNR_WAKP_DS_PRO>-MATKL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-AKTHE, sy-vline,
  WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-BZQFI, sy-vline,
  WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-AKBSP, sy-vline,
  WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-EKORG, sy-vline,
  WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-EKGRP, sy-vline,
  WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-VKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO 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_WES_S_FILTER_ARTNR_WAKP_DS_PRO 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_WES_S_FILTER_ARTNR_WAKP_DS_PRO INTO WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO.


*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 ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-AKTNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO-SATNR.
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_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR, 
AKTNR TYPE STRING,
ARTNR TYPE STRING,
MEBME TYPE STRING,
SATNR TYPE STRING,
MATKL TYPE STRING,
AKTHE TYPE STRING,
BZQFI TYPE STRING,
AKBSP TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
FBDAT TYPE STRING,
SBDAT TYPE STRING,
FLDAT TYPE STRING,
SLDAT TYPE STRING,
BEDAT TYPE STRING,
EKKPS TYPE STRING,
VKKPS TYPE STRING,
VZKPS TYPE STRING,
REB_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_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_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-AKTNR sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-ARTNR sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-MEBME sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-SATNR sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-MATKL sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-AKTHE sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-BZQFI sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-AKBSP sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-EKORG sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-EKGRP sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-VKORG sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-VTWEG sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-FBDAT sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-SBDAT sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-FLDAT sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-SLDAT sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-BEDAT sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-EKKPS sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-VKKPS sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-VZKPS sy-vline 
WA_WES_S_FILTER_ARTNR_WAKP_DS_PRO_STR-REB_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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