ABAP Select data from SAP table RN1PO_PROCESS_REPRESENTATION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1PO_PROCESS_REPRESENTATION 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 RN1PO_PROCESS_REPRESENTATION. 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 RN1PO_PROCESS_REPRESENTATION 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_RN1PO_PROCESS_REPRESENTATION TYPE STANDARD TABLE OF RN1PO_PROCESS_REPRESENTATION,
      WA_RN1PO_PROCESS_REPRESENTATION TYPE RN1PO_PROCESS_REPRESENTATION,
      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: <RN1PO_PROCESS_REPRESENTATION> TYPE RN1PO_PROCESS_REPRESENTATION.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1PO_PROCESS_REPRESENTATION.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1PO_PROCESS_REPRESENTATION
  INTO TABLE IT_RN1PO_PROCESS_REPRESENTATION.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1PO_PROCESS_REPRESENTATION
*  INTO TABLE @DATA(IT_RN1PO_PROCESS_REPRESENTATION2).
*--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_RN1PO_PROCESS_REPRESENTATION INDEX 1 INTO DATA(WA_RN1PO_PROCESS_REPRESENTATION2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1PO_PROCESS_REPRESENTATION ASSIGNING <RN1PO_PROCESS_REPRESENTATION>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1PO_PROCESS_REPRESENTATION>-POBEZ = 1.
<RN1PO_PROCESS_REPRESENTATION>-PODATE = 1.
<RN1PO_PROCESS_REPRESENTATION>-POTIME = 1.
<RN1PO_PROCESS_REPRESENTATION>-ORGID = 1.
<RN1PO_PROCESS_REPRESENTATION>-ORGKB = 1.

ENDLOOP.

LOOP AT IT_RN1PO_PROCESS_REPRESENTATION INTO WA_RN1PO_PROCESS_REPRESENTATION.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1PO_PROCESS_REPRESENTATION-MITARB, sy-vline,
  WA_RN1PO_PROCESS_REPRESENTATION-MITARBNAM, sy-vline,
  WA_RN1PO_PROCESS_REPRESENTATION-STATU, sy-vline,
  WA_RN1PO_PROCESS_REPRESENTATION-POKLS, sy-vline,
  WA_RN1PO_PROCESS_REPRESENTATION-POKLSICON, sy-vline,
  WA_RN1PO_PROCESS_REPRESENTATION-POKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1PO_PROCESS_REPRESENTATION 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_RN1PO_PROCESS_REPRESENTATION 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_RN1PO_PROCESS_REPRESENTATION INTO WA_RN1PO_PROCESS_REPRESENTATION.


*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 ORGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_PROCESS_REPRESENTATION-ORGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_PROCESS_REPRESENTATION-ORGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POFALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_PROCESS_REPRESENTATION-POFALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_PROCESS_REPRESENTATION-POFALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ROOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_PROCESS_REPRESENTATION-ROOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_PROCESS_REPRESENTATION-ROOM.
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_RN1PO_PROCESS_REPRESENTATION_STR, 
POBEZ TYPE STRING,
PODATE TYPE STRING,
POTIME TYPE STRING,
ORGID TYPE STRING,
ORGKB TYPE STRING,
MITARB TYPE STRING,
MITARBNAM TYPE STRING,
STATU TYPE STRING,
POKLS TYPE STRING,
POKLSICON TYPE STRING,
POKEY TYPE STRING,
POERG TYPE STRING,
POLINK TYPE STRING,
POLINK2 TYPE STRING,
POFALNR TYPE STRING,
PORISK TYPE STRING,
POCXTYPSN1 TYPE STRING,
POCXTYPSN2 TYPE STRING,
POCXTYPSN3 TYPE STRING,
POCXSTANM1 TYPE STRING,
POCXSTANM2 TYPE STRING,
POCXSTANM3 TYPE STRING,
POCXSICON1 TYPE STRING,
POCXSICON2 TYPE STRING,
POCXSICON3 TYPE STRING,
POCXID1 TYPE STRING,
POCXID2 TYPE STRING,
POCXID3 TYPE STRING,
ROOM TYPE STRING,
ROOMKB TYPE STRING,
DBC TYPE STRING,
DBC_ICON TYPE STRING,
AFGESL TYPE STRING,
ENDDT TYPE STRING,
PATIENT_NAME TYPE STRING,
OBJECTTYPE_NAME TYPE STRING,
OBJECTTYPE_ICON TYPE STRING,
WEEK_NAME TYPE STRING,
MONTH_NAME TYPE STRING,
QUARTER_NAME TYPE STRING,
YEAR_NAME TYPE STRING,
PO_TM_TITLE TYPE STRING,
POSYMPTEXT TYPE STRING,
SORT_DATE_01 TYPE STRING,
SORT_TIME_01 TYPE STRING,
SORT_DATE_02 TYPE STRING,
SORT_TIME_02 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1PO_PROCESS_REPRESENTATION_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_RN1PO_PROCESS_REPRESENTATION_STR-POBEZ sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-PODATE sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POTIME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-ORGID sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-ORGKB sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-MITARB sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-MITARBNAM sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-STATU sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POKLS sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POKLSICON sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POKEY sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POERG sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POLINK sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POLINK2 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POFALNR sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-PORISK sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXTYPSN1 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXTYPSN2 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXTYPSN3 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXSTANM1 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXSTANM2 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXSTANM3 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXSICON1 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXSICON2 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXSICON3 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXID1 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXID2 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POCXID3 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-ROOM sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-ROOMKB sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-DBC sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-DBC_ICON sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-AFGESL sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-ENDDT sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-PATIENT_NAME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-OBJECTTYPE_NAME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-OBJECTTYPE_ICON sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-WEEK_NAME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-MONTH_NAME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-QUARTER_NAME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-YEAR_NAME sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-PO_TM_TITLE sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-POSYMPTEXT sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-SORT_DATE_01 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-SORT_TIME_01 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-SORT_DATE_02 sy-vline 
WA_RN1PO_PROCESS_REPRESENTATION_STR-SORT_TIME_02 sy-vline      INTO ld_text SEPARATED BY SPACE.

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