ABAP Select data from SAP table RIHPLKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHPLKO
*  INTO TABLE @DATA(IT_RIHPLKO2).
*--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_RIHPLKO INDEX 1 INTO DATA(WA_RIHPLKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHPLKO>-PLNTY = 1.
<RIHPLKO>-PLNNR = 1.
<RIHPLKO>-PLNAL = 1.
<RIHPLKO>-DATUV = 1.
<RIHPLKO>-TECHV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHPLKO-AENNR, sy-vline,
  WA_RIHPLKO-LOEKZ, sy-vline,
  WA_RIHPLKO-ANDAT, sy-vline,
  WA_RIHPLKO-ANNAM, sy-vline,
  WA_RIHPLKO-AEDAT, sy-vline,
  WA_RIHPLKO-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHPLKO 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_RIHPLKO 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_RIHPLKO INTO WA_RIHPLKO.


*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 PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHPLKO-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHPLKO-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHPLKO-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHPLKO-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHPLKO-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHPLKO-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHPLKO-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHPLKO-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ISTRU
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RIHPLKO-ISTRU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHPLKO-ISTRU.
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_RIHPLKO_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
AENNR TYPE STRING,
LOEKZ TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
VERWE TYPE STRING,
WERKS TYPE STRING,
STATU TYPE STRING,
VAGRP TYPE STRING,
KTEXT TYPE STRING,
KOKRS TYPE STRING,
STRAT TYPE STRING,
TPLNR TYPE STRING,
EQUNR TYPE STRING,
ISTRU TYPE STRING,
ANLZU TYPE STRING,
ARBPL TYPE STRING,
DELKZ TYPE STRING,
SLWBEZ TYPE STRING,
AWERK TYPE STRING,
EXTNUM TYPE STRING,
/CUM/INTCUNR TYPE STRING,
TL_EXTID TYPE STRING,
XHIERTL TYPE STRING,
ADPSP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHPLKO_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_RIHPLKO_STR-PLNTY sy-vline 
WA_RIHPLKO_STR-PLNNR sy-vline 
WA_RIHPLKO_STR-PLNAL sy-vline 
WA_RIHPLKO_STR-DATUV sy-vline 
WA_RIHPLKO_STR-TECHV sy-vline 
WA_RIHPLKO_STR-AENNR sy-vline 
WA_RIHPLKO_STR-LOEKZ sy-vline 
WA_RIHPLKO_STR-ANDAT sy-vline 
WA_RIHPLKO_STR-ANNAM sy-vline 
WA_RIHPLKO_STR-AEDAT sy-vline 
WA_RIHPLKO_STR-AENAM sy-vline 
WA_RIHPLKO_STR-VERWE sy-vline 
WA_RIHPLKO_STR-WERKS sy-vline 
WA_RIHPLKO_STR-STATU sy-vline 
WA_RIHPLKO_STR-VAGRP sy-vline 
WA_RIHPLKO_STR-KTEXT sy-vline 
WA_RIHPLKO_STR-KOKRS sy-vline 
WA_RIHPLKO_STR-STRAT sy-vline 
WA_RIHPLKO_STR-TPLNR sy-vline 
WA_RIHPLKO_STR-EQUNR sy-vline 
WA_RIHPLKO_STR-ISTRU sy-vline 
WA_RIHPLKO_STR-ANLZU sy-vline 
WA_RIHPLKO_STR-ARBPL sy-vline 
WA_RIHPLKO_STR-DELKZ sy-vline 
WA_RIHPLKO_STR-SLWBEZ sy-vline 
WA_RIHPLKO_STR-AWERK sy-vline 
WA_RIHPLKO_STR-EXTNUM sy-vline 
WA_RIHPLKO_STR-/CUM/INTCUNR sy-vline 
WA_RIHPLKO_STR-TL_EXTID sy-vline 
WA_RIHPLKO_STR-XHIERTL sy-vline 
WA_RIHPLKO_STR-ADPSP sy-vline      INTO ld_text SEPARATED BY SPACE.

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