ABAP Select data from SAP table OUTTAB_WAKPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OUTTAB_WAKPD
*  INTO TABLE @DATA(IT_OUTTAB_WAKPD2).
*--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_OUTTAB_WAKPD INDEX 1 INTO DATA(WA_OUTTAB_WAKPD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OUTTAB_WAKPD>-ARTNR = 1.
<OUTTAB_WAKPD>-MEBME = 1.
<OUTTAB_WAKPD>-PABBM = 1.
<OUTTAB_WAKPD>-PLVKP = 1.
<OUTTAB_WAKPD>-WAELA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OUTTAB_WAKPD-MAKTX, sy-vline,
  WA_OUTTAB_WAKPD-MIAMG, sy-vline,
  WA_OUTTAB_WAKPD-AUFME, sy-vline,
  WA_OUTTAB_WAKPD-MEAUF, sy-vline,
  WA_OUTTAB_WAKPD-VREGE, sy-vline,
  WA_OUTTAB_WAKPD-ASTRA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OUTTAB_WAKPD 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_OUTTAB_WAKPD 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_OUTTAB_WAKPD INTO WA_OUTTAB_WAKPD.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field PMATA
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OUTTAB_WAKPD-PMATA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OUTTAB_WAKPD-PMATA.
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_OUTTAB_WAKPD_STR, 
ARTNR TYPE STRING,
MEBME TYPE STRING,
PABBM TYPE STRING,
PLVKP TYPE STRING,
WAELA TYPE STRING,
MAKTX TYPE STRING,
MIAMG TYPE STRING,
AUFME TYPE STRING,
MEAUF TYPE STRING,
VREGE TYPE STRING,
ASTRA TYPE STRING,
APSTP TYPE STRING,
AKTHE TYPE STRING,
BEKTY TYPE STRING,
NVKP TYPE STRING,
EKWVK TYPE STRING,
PLEKP TYPE STRING,
WAEEK TYPE STRING,
MEBPR TYPE STRING,
PMATA TYPE STRING,
VKKPS TYPE STRING,
EKKPS TYPE STRING,
PUMVP TYPE STRING,
PUMEP TYPE STRING,
PUMNP TYPE STRING,
PUMRE TYPE STRING,
PUMLO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OUTTAB_WAKPD_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_OUTTAB_WAKPD_STR-ARTNR sy-vline 
WA_OUTTAB_WAKPD_STR-MEBME sy-vline 
WA_OUTTAB_WAKPD_STR-PABBM sy-vline 
WA_OUTTAB_WAKPD_STR-PLVKP sy-vline 
WA_OUTTAB_WAKPD_STR-WAELA sy-vline 
WA_OUTTAB_WAKPD_STR-MAKTX sy-vline 
WA_OUTTAB_WAKPD_STR-MIAMG sy-vline 
WA_OUTTAB_WAKPD_STR-AUFME sy-vline 
WA_OUTTAB_WAKPD_STR-MEAUF sy-vline 
WA_OUTTAB_WAKPD_STR-VREGE sy-vline 
WA_OUTTAB_WAKPD_STR-ASTRA sy-vline 
WA_OUTTAB_WAKPD_STR-APSTP sy-vline 
WA_OUTTAB_WAKPD_STR-AKTHE sy-vline 
WA_OUTTAB_WAKPD_STR-BEKTY sy-vline 
WA_OUTTAB_WAKPD_STR-NVKP sy-vline 
WA_OUTTAB_WAKPD_STR-EKWVK sy-vline 
WA_OUTTAB_WAKPD_STR-PLEKP sy-vline 
WA_OUTTAB_WAKPD_STR-WAEEK sy-vline 
WA_OUTTAB_WAKPD_STR-MEBPR sy-vline 
WA_OUTTAB_WAKPD_STR-PMATA sy-vline 
WA_OUTTAB_WAKPD_STR-VKKPS sy-vline 
WA_OUTTAB_WAKPD_STR-EKKPS sy-vline 
WA_OUTTAB_WAKPD_STR-PUMVP sy-vline 
WA_OUTTAB_WAKPD_STR-PUMEP sy-vline 
WA_OUTTAB_WAKPD_STR-PUMNP sy-vline 
WA_OUTTAB_WAKPD_STR-PUMRE sy-vline 
WA_OUTTAB_WAKPD_STR-PUMLO sy-vline      INTO ld_text SEPARATED BY SPACE.

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