ABAP Select data from SAP table RPPNT_LI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPPNT_LI
*  INTO TABLE @DATA(IT_RPPNT_LI2).
*--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_RPPNT_LI INDEX 1 INTO DATA(WA_RPPNT_LI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPPNT_LI>-MANDT = 1.
<RPPNT_LI>-RPGUID = 1.
<RPPNT_LI>-RPNAME = 1.
<RPPNT_LI>-APPLOBJ_TYPE = 1.
<RPPNT_LI>-CREADAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPPNT_LI-CREABY, sy-vline,
  WA_RPPNT_LI-CHNGDAT, sy-vline,
  WA_RPPNT_LI-CHNGBY, sy-vline,
  WA_RPPNT_LI-LOGSYS, sy-vline,
  WA_RPPNT_LI-OTYPE, sy-vline,
  WA_RPPNT_LI-PGUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPPNT_LI 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_RPPNT_LI 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_RPPNT_LI INTO WA_RPPNT_LI.


*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 ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPPNT_LI-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPPNT_LI-LOGSYS.
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_RPPNT_LI_STR, 
MANDT TYPE STRING,
RPGUID TYPE STRING,
RPNAME TYPE STRING,
APPLOBJ_TYPE TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
LOGSYS TYPE STRING,
OTYPE TYPE STRING,
PGUID TYPE STRING,
RPPOSITION TYPE STRING,
RPTYPE TYPE STRING,
DELFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPPNT_LI_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_RPPNT_LI_STR-MANDT sy-vline 
WA_RPPNT_LI_STR-RPGUID sy-vline 
WA_RPPNT_LI_STR-RPNAME sy-vline 
WA_RPPNT_LI_STR-APPLOBJ_TYPE sy-vline 
WA_RPPNT_LI_STR-CREADAT sy-vline 
WA_RPPNT_LI_STR-CREABY sy-vline 
WA_RPPNT_LI_STR-CHNGDAT sy-vline 
WA_RPPNT_LI_STR-CHNGBY sy-vline 
WA_RPPNT_LI_STR-LOGSYS sy-vline 
WA_RPPNT_LI_STR-OTYPE sy-vline 
WA_RPPNT_LI_STR-PGUID sy-vline 
WA_RPPNT_LI_STR-RPPOSITION sy-vline 
WA_RPPNT_LI_STR-RPTYPE sy-vline 
WA_RPPNT_LI_STR-DELFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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