ABAP Select data from SAP table PPOIX_BW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPOIX_BW
*  INTO TABLE @DATA(IT_PPOIX_BW2).
*--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_PPOIX_BW INDEX 1 INTO DATA(WA_PPOIX_BW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPOIX_BW>-MANDT = 1.
<PPOIX_BW>-PERNR = 1.
<PPOIX_BW>-SEQNO = 1.
<PPOIX_BW>-ACTSIGN = 1.
<PPOIX_BW>-RUNID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPOIX_BW-POSTNUM, sy-vline,
  WA_PPOIX_BW-SPPRC, sy-vline,
  WA_PPOIX_BW-RTLINE, sy-vline,
  WA_PPOIX_BW-WPBPREF, sy-vline,
  WA_PPOIX_BW-C0REF, sy-vline,
  WA_PPOIX_BW-C1REF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPOIX_BW 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_PPOIX_BW 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_PPOIX_BW INTO WA_PPOIX_BW.


*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 CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPOIX_BW-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOIX_BW-MEINS.
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_PPOIX_BW_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
SEQNO TYPE STRING,
ACTSIGN TYPE STRING,
RUNID TYPE STRING,
POSTNUM TYPE STRING,
SPPRC TYPE STRING,
RTLINE TYPE STRING,
WPBPREF TYPE STRING,
C0REF TYPE STRING,
C1REF TYPE STRING,
KOART TYPE STRING,
MOMAG TYPE STRING,
KOMOK TYPE STRING,
MCODE TYPE STRING,
TSLIN TYPE STRING,
LGART TYPE STRING,
ANZHL TYPE STRING,
MEINS TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
FUNDREF TYPE STRING,
AUART TYPE STRING,
NOFIN TYPE STRING,
SWPER TYPE STRING,
MO_FIX TYPE STRING,
SWRETROACT TYPE STRING,
NEG_POSTNG TYPE STRING,
SWCODIST TYPE STRING,
HASHCODE TYPE STRING,
HASHSEQNR TYPE STRING,
PPOPX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPOIX_BW_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_PPOIX_BW_STR-MANDT sy-vline 
WA_PPOIX_BW_STR-PERNR sy-vline 
WA_PPOIX_BW_STR-SEQNO sy-vline 
WA_PPOIX_BW_STR-ACTSIGN sy-vline 
WA_PPOIX_BW_STR-RUNID sy-vline 
WA_PPOIX_BW_STR-POSTNUM sy-vline 
WA_PPOIX_BW_STR-SPPRC sy-vline 
WA_PPOIX_BW_STR-RTLINE sy-vline 
WA_PPOIX_BW_STR-WPBPREF sy-vline 
WA_PPOIX_BW_STR-C0REF sy-vline 
WA_PPOIX_BW_STR-C1REF sy-vline 
WA_PPOIX_BW_STR-KOART sy-vline 
WA_PPOIX_BW_STR-MOMAG sy-vline 
WA_PPOIX_BW_STR-KOMOK sy-vline 
WA_PPOIX_BW_STR-MCODE sy-vline 
WA_PPOIX_BW_STR-TSLIN sy-vline 
WA_PPOIX_BW_STR-LGART sy-vline 
WA_PPOIX_BW_STR-ANZHL sy-vline 
WA_PPOIX_BW_STR-MEINS sy-vline 
WA_PPOIX_BW_STR-BETRG sy-vline 
WA_PPOIX_BW_STR-WAERS sy-vline 
WA_PPOIX_BW_STR-FUNDREF sy-vline 
WA_PPOIX_BW_STR-AUART sy-vline 
WA_PPOIX_BW_STR-NOFIN sy-vline 
WA_PPOIX_BW_STR-SWPER sy-vline 
WA_PPOIX_BW_STR-MO_FIX sy-vline 
WA_PPOIX_BW_STR-SWRETROACT sy-vline 
WA_PPOIX_BW_STR-NEG_POSTNG sy-vline 
WA_PPOIX_BW_STR-SWCODIST sy-vline 
WA_PPOIX_BW_STR-HASHCODE sy-vline 
WA_PPOIX_BW_STR-HASHSEQNR sy-vline 
WA_PPOIX_BW_STR-PPOPX sy-vline      INTO ld_text SEPARATED BY SPACE.

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