ABAP Select data from SAP table RPCPL2D0_PF_GRUNDLAGEN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCPL2D0_PF_GRUNDLAGEN 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 RPCPL2D0_PF_GRUNDLAGEN. 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 RPCPL2D0_PF_GRUNDLAGEN 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_RPCPL2D0_PF_GRUNDLAGEN TYPE STANDARD TABLE OF RPCPL2D0_PF_GRUNDLAGEN,
      WA_RPCPL2D0_PF_GRUNDLAGEN TYPE RPCPL2D0_PF_GRUNDLAGEN,
      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: <RPCPL2D0_PF_GRUNDLAGEN> TYPE RPCPL2D0_PF_GRUNDLAGEN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPCPL2D0_PF_GRUNDLAGEN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPCPL2D0_PF_GRUNDLAGEN
  INTO TABLE IT_RPCPL2D0_PF_GRUNDLAGEN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCPL2D0_PF_GRUNDLAGEN
*  INTO TABLE @DATA(IT_RPCPL2D0_PF_GRUNDLAGEN2).
*--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_RPCPL2D0_PF_GRUNDLAGEN INDEX 1 INTO DATA(WA_RPCPL2D0_PF_GRUNDLAGEN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPCPL2D0_PF_GRUNDLAGEN ASSIGNING <RPCPL2D0_PF_GRUNDLAGEN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCPL2D0_PF_GRUNDLAGEN>-ART = 1.
<RPCPL2D0_PF_GRUNDLAGEN>-SRTZA = 1.
<RPCPL2D0_PF_GRUNDLAGEN>-GDGNL = 1.
<RPCPL2D0_PF_GRUNDLAGEN>-GDGNS = 1.
<RPCPL2D0_PF_GRUNDLAGEN>-GDGML = 1.

ENDLOOP.

LOOP AT IT_RPCPL2D0_PF_GRUNDLAGEN INTO WA_RPCPL2D0_PF_GRUNDLAGEN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCPL2D0_PF_GRUNDLAGEN-GDGMS, sy-vline,
  WA_RPCPL2D0_PF_GRUNDLAGEN-GDGOL, sy-vline,
  WA_RPCPL2D0_PF_GRUNDLAGEN-GDGOS, sy-vline,
  WA_RPCPL2D0_PF_GRUNDLAGEN-GDBNL, sy-vline,
  WA_RPCPL2D0_PF_GRUNDLAGEN-GDBNS, sy-vline,
  WA_RPCPL2D0_PF_GRUNDLAGEN-GDBML, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCPL2D0_PF_GRUNDLAGEN 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_RPCPL2D0_PF_GRUNDLAGEN 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_RPCPL2D0_PF_GRUNDLAGEN INTO WA_RPCPL2D0_PF_GRUNDLAGEN.


*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_RPCPL2D0_PF_GRUNDLAGEN_STR, 
ART TYPE STRING,
SRTZA TYPE STRING,
GDGNL TYPE STRING,
GDGNS TYPE STRING,
GDGML TYPE STRING,
GDGMS TYPE STRING,
GDGOL TYPE STRING,
GDGOS TYPE STRING,
GDBNL TYPE STRING,
GDBNS TYPE STRING,
GDBML TYPE STRING,
GDBMS TYPE STRING,
GDBOL TYPE STRING,
GDBOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCPL2D0_PF_GRUNDLAGEN_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_RPCPL2D0_PF_GRUNDLAGEN_STR-ART sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-SRTZA sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDGNL sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDGNS sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDGML sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDGMS sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDGOL sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDGOS sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDBNL sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDBNS sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDBML sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDBMS sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDBOL sy-vline 
WA_RPCPL2D0_PF_GRUNDLAGEN_STR-GDBOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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