ABAP Select data from SAP table WANARI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WANARI
*  INTO TABLE @DATA(IT_WANARI2).
*--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_WANARI INDEX 1 INTO DATA(WA_WANARI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WANARI>-AKTNR = 1.
<WANARI>-ARTNR = 1.
<WANARI>-MEBME = 1.
<WANARI>-KUNNR = 1.
<WANARI>-WERK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WANARI-WRKTY, sy-vline,
  WA_WANARI-WALNR, sy-vline,
  WA_WANARI-BEKTY, sy-vline,
  WA_WANARI-VKORG, sy-vline,
  WA_WANARI-VTWEG, sy-vline,
  WA_WANARI-RUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WANARI 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_WANARI 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_WANARI INTO WA_WANARI.


*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_WANARI-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WANARI-AKTNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WANARI-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WANARI-KUNNR.
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_WANARI_STR, 
AKTNR TYPE STRING,
ARTNR TYPE STRING,
MEBME TYPE STRING,
KUNNR TYPE STRING,
WERK TYPE STRING,
WRKTY TYPE STRING,
WALNR TYPE STRING,
BEKTY TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
RUDAT TYPE STRING,
BEDET TYPE STRING,
BESTG TYPE STRING,
AENDG TYPE STRING,
MAHNG TYPE STRING,
BEKAN TYPE STRING,
BEDEX TYPE STRING,
RUDAX TYPE STRING,
AENDX TYPE STRING,
BESTX TYPE STRING,
AUGEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WANARI_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_WANARI_STR-AKTNR sy-vline 
WA_WANARI_STR-ARTNR sy-vline 
WA_WANARI_STR-MEBME sy-vline 
WA_WANARI_STR-KUNNR sy-vline 
WA_WANARI_STR-WERK sy-vline 
WA_WANARI_STR-WRKTY sy-vline 
WA_WANARI_STR-WALNR sy-vline 
WA_WANARI_STR-BEKTY sy-vline 
WA_WANARI_STR-VKORG sy-vline 
WA_WANARI_STR-VTWEG sy-vline 
WA_WANARI_STR-RUDAT sy-vline 
WA_WANARI_STR-BEDET sy-vline 
WA_WANARI_STR-BESTG sy-vline 
WA_WANARI_STR-AENDG sy-vline 
WA_WANARI_STR-MAHNG sy-vline 
WA_WANARI_STR-BEKAN sy-vline 
WA_WANARI_STR-BEDEX sy-vline 
WA_WANARI_STR-RUDAX sy-vline 
WA_WANARI_STR-AENDX sy-vline 
WA_WANARI_STR-BESTX sy-vline 
WA_WANARI_STR-AUGEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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