ABAP Select data from SAP table /SAPAPO/DP440M into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/DP440M 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 /SAPAPO/DP440M. 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 /SAPAPO/DP440M 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_/SAPAPO/DP440M TYPE STANDARD TABLE OF /SAPAPO/DP440M,
      WA_/SAPAPO/DP440M TYPE /SAPAPO/DP440M,
      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: </SAPAPO/DP440M> TYPE /SAPAPO/DP440M.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/DP440M.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/DP440M
  INTO TABLE IT_/SAPAPO/DP440M.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/DP440M
*  INTO TABLE @DATA(IT_/SAPAPO/DP440M2).
*--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_/SAPAPO/DP440M INDEX 1 INTO DATA(WA_/SAPAPO/DP440M2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/DP440M ASSIGNING </SAPAPO/DP440M>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/DP440M>-MANDT = 1.
</SAPAPO/DP440M>-MLRPF = 1.
</SAPAPO/DP440M>-PAREAID = 1.
</SAPAPO/DP440M>-GUID = 1.
</SAPAPO/DP440M>-PFITX = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/DP440M INTO WA_/SAPAPO/DP440M.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/DP440M-KENNZ, sy-vline,
  WA_/SAPAPO/DP440M-VRSIO, sy-vline,
  WA_/SAPAPO/DP440M-VRSIOID, sy-vline,
  WA_/SAPAPO/DP440M-NUMVAR, sy-vline,
  WA_/SAPAPO/DP440M-BOUNDPF, sy-vline,
  WA_/SAPAPO/DP440M-ERROR_METHOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/DP440M 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_/SAPAPO/DP440M 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_/SAPAPO/DP440M INTO WA_/SAPAPO/DP440M.


*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 PARE2, internal->external for field PAREAID
CALL FUNCTION 'CONVERSION_EXIT_PARE2_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DP440M-PAREAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DP440M-PAREAID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VRSIO, internal->external for field VRSIOID
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DP440M-VRSIOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DP440M-VRSIOID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VRSIO, internal->external for field SH_VRSIOID
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DP440M-SH_VRSIOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DP440M-SH_VRSIOID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VRSIO, internal->external for field POS_VRSIOID
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DP440M-POS_VRSIOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DP440M-POS_VRSIOID.
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_/SAPAPO/DP440M_STR, 
MANDT TYPE STRING,
MLRPF TYPE STRING,
PAREAID TYPE STRING,
GUID TYPE STRING,
PFITX TYPE STRING,
KENNZ TYPE STRING,
VRSIO TYPE STRING,
VRSIOID TYPE STRING,
NUMVAR TYPE STRING,
BOUNDPF TYPE STRING,
ERROR_METHOD TYPE STRING,
SIGMA TYPE STRING,
SH_KF TYPE STRING,
SH_VRSIO TYPE STRING,
SH_VRSIOID TYPE STRING,
POS_KF TYPE STRING,
POS_VRSIO TYPE STRING,
POS_VRSIOID TYPE STRING,
PRSTR TYPE STRING,
ALPHA TYPE STRING,
BETA1 TYPE STRING,
GAMMA TYPE STRING,
PERIO TYPE STRING,
FLUX_KF TYPE STRING,
DEL_LEAD_ZEROS TYPE STRING,
SH_BOUNDPF TYPE STRING,
MLR_METHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/DP440M_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_/SAPAPO/DP440M_STR-MANDT sy-vline 
WA_/SAPAPO/DP440M_STR-MLRPF sy-vline 
WA_/SAPAPO/DP440M_STR-PAREAID sy-vline 
WA_/SAPAPO/DP440M_STR-GUID sy-vline 
WA_/SAPAPO/DP440M_STR-PFITX sy-vline 
WA_/SAPAPO/DP440M_STR-KENNZ sy-vline 
WA_/SAPAPO/DP440M_STR-VRSIO sy-vline 
WA_/SAPAPO/DP440M_STR-VRSIOID sy-vline 
WA_/SAPAPO/DP440M_STR-NUMVAR sy-vline 
WA_/SAPAPO/DP440M_STR-BOUNDPF sy-vline 
WA_/SAPAPO/DP440M_STR-ERROR_METHOD sy-vline 
WA_/SAPAPO/DP440M_STR-SIGMA sy-vline 
WA_/SAPAPO/DP440M_STR-SH_KF sy-vline 
WA_/SAPAPO/DP440M_STR-SH_VRSIO sy-vline 
WA_/SAPAPO/DP440M_STR-SH_VRSIOID sy-vline 
WA_/SAPAPO/DP440M_STR-POS_KF sy-vline 
WA_/SAPAPO/DP440M_STR-POS_VRSIO sy-vline 
WA_/SAPAPO/DP440M_STR-POS_VRSIOID sy-vline 
WA_/SAPAPO/DP440M_STR-PRSTR sy-vline 
WA_/SAPAPO/DP440M_STR-ALPHA sy-vline 
WA_/SAPAPO/DP440M_STR-BETA1 sy-vline 
WA_/SAPAPO/DP440M_STR-GAMMA sy-vline 
WA_/SAPAPO/DP440M_STR-PERIO sy-vline 
WA_/SAPAPO/DP440M_STR-FLUX_KF sy-vline 
WA_/SAPAPO/DP440M_STR-DEL_LEAD_ZEROS sy-vline 
WA_/SAPAPO/DP440M_STR-SH_BOUNDPF sy-vline 
WA_/SAPAPO/DP440M_STR-MLR_METHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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