ABAP Select data from SAP table RN1ME_PL_SELECT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1ME_PL_SELECT 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 RN1ME_PL_SELECT. 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 RN1ME_PL_SELECT 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_RN1ME_PL_SELECT TYPE STANDARD TABLE OF RN1ME_PL_SELECT,
      WA_RN1ME_PL_SELECT TYPE RN1ME_PL_SELECT,
      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: <RN1ME_PL_SELECT> TYPE RN1ME_PL_SELECT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1ME_PL_SELECT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1ME_PL_SELECT
  INTO TABLE IT_RN1ME_PL_SELECT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1ME_PL_SELECT
*  INTO TABLE @DATA(IT_RN1ME_PL_SELECT2).
*--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_RN1ME_PL_SELECT INDEX 1 INTO DATA(WA_RN1ME_PL_SELECT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1ME_PL_SELECT ASSIGNING <RN1ME_PL_SELECT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1ME_PL_SELECT>-EINRI = 1.
<RN1ME_PL_SELECT>-FSOURCE = 1.
<RN1ME_PL_SELECT>-MEDOCDOU = 1.
<RN1ME_PL_SELECT>-MEDOCOU = 1.
<RN1ME_PL_SELECT>-OUPREP = 1.

ENDLOOP.

LOOP AT IT_RN1ME_PL_SELECT INTO WA_RN1ME_PL_SELECT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1ME_PL_SELECT-PBDAD, sy-vline,
  WA_RN1ME_PL_SELECT-PBTAD, sy-vline,
  WA_RN1ME_PL_SELECT-PATNR, sy-vline,
  WA_RN1ME_PL_SELECT-FALNR, sy-vline,
  WA_RN1ME_PL_SELECT-MPRESNR, sy-vline,
  WA_RN1ME_PL_SELECT-MEORDID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1ME_PL_SELECT 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_RN1ME_PL_SELECT 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_RN1ME_PL_SELECT INTO WA_RN1ME_PL_SELECT.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1ME_PL_SELECT-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1ME_PL_SELECT-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1ME_PL_SELECT-EMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1ME_PL_SELECT-EMR.
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_RN1ME_PL_SELECT_STR, 
EINRI TYPE STRING,
FSOURCE TYPE STRING,
MEDOCDOU TYPE STRING,
MEDOCOU TYPE STRING,
OUPREP TYPE STRING,
PBDAD TYPE STRING,
PBTAD TYPE STRING,
PATNR TYPE STRING,
FALNR TYPE STRING,
MPRESNR TYPE STRING,
MEORDID TYPE STRING,
MEEVTID TYPE STRING,
MOTYP TYPE STRING,
MEDGRPID TYPE STRING,
FORTYPE TYPE STRING,
MATNR TYPE STRING,
DRUGID TYPE STRING,
EVTSTATUS TYPE STRING,
CANCELLED TYPE STRING,
LISTTYPE TYPE STRING,
PRINT_IMM TYPE STRING,
EV_PICKED TYPE STRING,
EV_FILLED TYPE STRING,
EV_CLOSED TYPE STRING,
EMR TYPE STRING,
TESTMODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1ME_PL_SELECT_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_RN1ME_PL_SELECT_STR-EINRI sy-vline 
WA_RN1ME_PL_SELECT_STR-FSOURCE sy-vline 
WA_RN1ME_PL_SELECT_STR-MEDOCDOU sy-vline 
WA_RN1ME_PL_SELECT_STR-MEDOCOU sy-vline 
WA_RN1ME_PL_SELECT_STR-OUPREP sy-vline 
WA_RN1ME_PL_SELECT_STR-PBDAD sy-vline 
WA_RN1ME_PL_SELECT_STR-PBTAD sy-vline 
WA_RN1ME_PL_SELECT_STR-PATNR sy-vline 
WA_RN1ME_PL_SELECT_STR-FALNR sy-vline 
WA_RN1ME_PL_SELECT_STR-MPRESNR sy-vline 
WA_RN1ME_PL_SELECT_STR-MEORDID sy-vline 
WA_RN1ME_PL_SELECT_STR-MEEVTID sy-vline 
WA_RN1ME_PL_SELECT_STR-MOTYP sy-vline 
WA_RN1ME_PL_SELECT_STR-MEDGRPID sy-vline 
WA_RN1ME_PL_SELECT_STR-FORTYPE sy-vline 
WA_RN1ME_PL_SELECT_STR-MATNR sy-vline 
WA_RN1ME_PL_SELECT_STR-DRUGID sy-vline 
WA_RN1ME_PL_SELECT_STR-EVTSTATUS sy-vline 
WA_RN1ME_PL_SELECT_STR-CANCELLED sy-vline 
WA_RN1ME_PL_SELECT_STR-LISTTYPE sy-vline 
WA_RN1ME_PL_SELECT_STR-PRINT_IMM sy-vline 
WA_RN1ME_PL_SELECT_STR-EV_PICKED sy-vline 
WA_RN1ME_PL_SELECT_STR-EV_FILLED sy-vline 
WA_RN1ME_PL_SELECT_STR-EV_CLOSED sy-vline 
WA_RN1ME_PL_SELECT_STR-EMR sy-vline 
WA_RN1ME_PL_SELECT_STR-TESTMODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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