ABAP Select data from SAP table PP0N into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PP0N 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 PP0N. 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 PP0N 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_PP0N TYPE STANDARD TABLE OF PP0N,
      WA_PP0N TYPE PP0N,
      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: <PP0N> TYPE PP0N.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PP0N.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PP0N
  INTO TABLE IT_PP0N.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PP0N
*  INTO TABLE @DATA(IT_PP0N2).
*--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_PP0N INDEX 1 INTO DATA(WA_PP0N2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PP0N ASSIGNING <PP0N>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PP0N>-PLVAR = 1.
<PP0N>-VERSN = 1.
<PP0N>-BEGDA = 1.
<PP0N>-ENDDA = 1.
<PP0N>-VNAME = 1.

ENDLOOP.

LOOP AT IT_PP0N INTO WA_PP0N.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PP0N-ACTIV, sy-vline,
  WA_PP0N-DEPTH, sy-vline,
  WA_PP0N-ABART, sy-vline,
  WA_PP0N-CURCY, sy-vline,
  WA_PP0N-CURTP, sy-vline,
  WA_PP0N-CURDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PP0N 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_PP0N 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_PP0N INTO WA_PP0N.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PP0N_STR, 
PLVAR TYPE STRING,
VERSN TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VNAME TYPE STRING,
ACTIV TYPE STRING,
DEPTH TYPE STRING,
ABART TYPE STRING,
CURCY TYPE STRING,
CURTP TYPE STRING,
CURDT TYPE STRING,
SUBTY TYPE STRING,
SHFLG TYPE STRING,
VIEW_OBJ TYPE STRING,
VIEW_POS TYPE STRING,
VIEW_PER TYPE STRING,
PROJ_FLG TYPE STRING,
PREL_FLG TYPE STRING,
PAYR_FLG TYPE STRING,
PY_BEGDA TYPE STRING,
PY_ENDDA TYPE STRING,
PCSAVE TYPE STRING,
VTEXT TYPE STRING,
PWD TYPE STRING,
CALCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PP0N_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_PP0N_STR-PLVAR sy-vline 
WA_PP0N_STR-VERSN sy-vline 
WA_PP0N_STR-BEGDA sy-vline 
WA_PP0N_STR-ENDDA sy-vline 
WA_PP0N_STR-VNAME sy-vline 
WA_PP0N_STR-ACTIV sy-vline 
WA_PP0N_STR-DEPTH sy-vline 
WA_PP0N_STR-ABART sy-vline 
WA_PP0N_STR-CURCY sy-vline 
WA_PP0N_STR-CURTP sy-vline 
WA_PP0N_STR-CURDT sy-vline 
WA_PP0N_STR-SUBTY sy-vline 
WA_PP0N_STR-SHFLG sy-vline 
WA_PP0N_STR-VIEW_OBJ sy-vline 
WA_PP0N_STR-VIEW_POS sy-vline 
WA_PP0N_STR-VIEW_PER sy-vline 
WA_PP0N_STR-PROJ_FLG sy-vline 
WA_PP0N_STR-PREL_FLG sy-vline 
WA_PP0N_STR-PAYR_FLG sy-vline 
WA_PP0N_STR-PY_BEGDA sy-vline 
WA_PP0N_STR-PY_ENDDA sy-vline 
WA_PP0N_STR-PCSAVE sy-vline 
WA_PP0N_STR-VTEXT sy-vline 
WA_PP0N_STR-PWD sy-vline 
WA_PP0N_STR-CALCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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