ABAP Select data from SAP table WABEK_APOS_ALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WABEK_APOS_ALL
*  INTO TABLE @DATA(IT_WABEK_APOS_ALL2).
*--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_WABEK_APOS_ALL INDEX 1 INTO DATA(WA_WABEK_APOS_ALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WABEK_APOS_ALL>-POSI = 1.
<WABEK_APOS_ALL>-ARTNR = 1.
<WABEK_APOS_ALL>-MEBME = 1.
<WABEK_APOS_ALL>-MAKTX = 1.
<WABEK_APOS_ALL>-PLEKP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WABEK_APOS_ALL-WAEEK, sy-vline,
  WA_WABEK_APOS_ALL-NORMP, sy-vline,
  WA_WABEK_APOS_ALL-PLVKP, sy-vline,
  WA_WABEK_APOS_ALL-WAELA, sy-vline,
  WA_WABEK_APOS_ALL-PMNGU, sy-vline,
  WA_WABEK_APOS_ALL-IMNGU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WABEK_APOS_ALL 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_WABEK_APOS_ALL 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_WABEK_APOS_ALL INTO WA_WABEK_APOS_ALL.


*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_WABEK_APOS_ALL-ARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WABEK_APOS_ALL-ARTNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATN1, internal->external for field BATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WABEK_APOS_ALL-BATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WABEK_APOS_ALL-BATNR.
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_WABEK_APOS_ALL_STR, 
POSI TYPE STRING,
ARTNR TYPE STRING,
MEBME TYPE STRING,
MAKTX TYPE STRING,
PLEKP TYPE STRING,
WAEEK TYPE STRING,
NORMP TYPE STRING,
PLVKP TYPE STRING,
WAELA TYPE STRING,
PMNGU TYPE STRING,
IMNGU TYPE STRING,
MMNGU TYPE STRING,
WMNGE TYPE STRING,
PABBM TYPE STRING,
AAVIZ TYPE STRING,
AUFME TYPE STRING,
ABFDT TYPE STRING,
RUDAB TYPE STRING,
RUDAV TYPE STRING,
BONUS TYPE STRING,
BONUST TYPE STRING,
RGART TYPE STRING,
RGARTT TYPE STRING,
NDISP TYPE STRING,
NDISPT TYPE STRING,
FBDAT TYPE STRING,
SBDAT TYPE STRING,
AKTHE TYPE STRING,
AKTTT TYPE STRING,
AWEFIB TYPE STRING,
AWEFIV TYPE STRING,
DATEK TYPE STRING,
DATNP TYPE STRING,
SATNR TYPE STRING,
ABELN TYPE STRING,
ABELP TYPE STRING,
BATNR TYPE STRING,
BATTX TYPE STRING,
AKLIZ TYPE STRING,
FLDAT TYPE STRING,
SLDAT TYPE STRING,
DATVK TYPE STRING,
DELIVERY_PHASES TYPE STRING,
LONG_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WABEK_APOS_ALL_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_WABEK_APOS_ALL_STR-POSI sy-vline 
WA_WABEK_APOS_ALL_STR-ARTNR sy-vline 
WA_WABEK_APOS_ALL_STR-MEBME sy-vline 
WA_WABEK_APOS_ALL_STR-MAKTX sy-vline 
WA_WABEK_APOS_ALL_STR-PLEKP sy-vline 
WA_WABEK_APOS_ALL_STR-WAEEK sy-vline 
WA_WABEK_APOS_ALL_STR-NORMP sy-vline 
WA_WABEK_APOS_ALL_STR-PLVKP sy-vline 
WA_WABEK_APOS_ALL_STR-WAELA sy-vline 
WA_WABEK_APOS_ALL_STR-PMNGU sy-vline 
WA_WABEK_APOS_ALL_STR-IMNGU sy-vline 
WA_WABEK_APOS_ALL_STR-MMNGU sy-vline 
WA_WABEK_APOS_ALL_STR-WMNGE sy-vline 
WA_WABEK_APOS_ALL_STR-PABBM sy-vline 
WA_WABEK_APOS_ALL_STR-AAVIZ sy-vline 
WA_WABEK_APOS_ALL_STR-AUFME sy-vline 
WA_WABEK_APOS_ALL_STR-ABFDT sy-vline 
WA_WABEK_APOS_ALL_STR-RUDAB sy-vline 
WA_WABEK_APOS_ALL_STR-RUDAV sy-vline 
WA_WABEK_APOS_ALL_STR-BONUS sy-vline 
WA_WABEK_APOS_ALL_STR-BONUST sy-vline 
WA_WABEK_APOS_ALL_STR-RGART sy-vline 
WA_WABEK_APOS_ALL_STR-RGARTT sy-vline 
WA_WABEK_APOS_ALL_STR-NDISP sy-vline 
WA_WABEK_APOS_ALL_STR-NDISPT sy-vline 
WA_WABEK_APOS_ALL_STR-FBDAT sy-vline 
WA_WABEK_APOS_ALL_STR-SBDAT sy-vline 
WA_WABEK_APOS_ALL_STR-AKTHE sy-vline 
WA_WABEK_APOS_ALL_STR-AKTTT sy-vline 
WA_WABEK_APOS_ALL_STR-AWEFIB sy-vline 
WA_WABEK_APOS_ALL_STR-AWEFIV sy-vline 
WA_WABEK_APOS_ALL_STR-DATEK sy-vline 
WA_WABEK_APOS_ALL_STR-DATNP sy-vline 
WA_WABEK_APOS_ALL_STR-SATNR sy-vline 
WA_WABEK_APOS_ALL_STR-ABELN sy-vline 
WA_WABEK_APOS_ALL_STR-ABELP sy-vline 
WA_WABEK_APOS_ALL_STR-BATNR sy-vline 
WA_WABEK_APOS_ALL_STR-BATTX sy-vline 
WA_WABEK_APOS_ALL_STR-AKLIZ sy-vline 
WA_WABEK_APOS_ALL_STR-FLDAT sy-vline 
WA_WABEK_APOS_ALL_STR-SLDAT sy-vline 
WA_WABEK_APOS_ALL_STR-DATVK sy-vline 
WA_WABEK_APOS_ALL_STR-DELIVERY_PHASES sy-vline 
WA_WABEK_APOS_ALL_STR-LONG_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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