ABAP Select data from SAP table RN2ET_FPUSH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2ET_FPUSH 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 RN2ET_FPUSH. 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 RN2ET_FPUSH 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_RN2ET_FPUSH TYPE STANDARD TABLE OF RN2ET_FPUSH,
      WA_RN2ET_FPUSH TYPE RN2ET_FPUSH,
      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: <RN2ET_FPUSH> TYPE RN2ET_FPUSH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2ET_FPUSH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2ET_FPUSH
  INTO TABLE IT_RN2ET_FPUSH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2ET_FPUSH
*  INTO TABLE @DATA(IT_RN2ET_FPUSH2).
*--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_RN2ET_FPUSH INDEX 1 INTO DATA(WA_RN2ET_FPUSH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2ET_FPUSH ASSIGNING <RN2ET_FPUSH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2ET_FPUSH>-MANDT = 1.
<RN2ET_FPUSH>-EINRI = 1.
<RN2ET_FPUSH>-DTID = 1.
<RN2ET_FPUSH>-DTVERS = 1.
<RN2ET_FPUSH>-ETID = 1.

ENDLOOP.

LOOP AT IT_RN2ET_FPUSH INTO WA_RN2ET_FPUSH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2ET_FPUSH-PFADLEVEL, sy-vline,
  WA_RN2ET_FPUSH-DEPFAD, sy-vline,
  WA_RN2ET_FPUSH-DEID, sy-vline,
  WA_RN2ET_FPUSH-DYNPR, sy-vline,
  WA_RN2ET_FPUSH-STRUC, sy-vline,
  WA_RN2ET_FPUSH-STRUCTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2ET_FPUSH 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_RN2ET_FPUSH 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_RN2ET_FPUSH INTO WA_RN2ET_FPUSH.


*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_RN2ET_FPUSH-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2ET_FPUSH-EINRI.
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_RN2ET_FPUSH_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
DTID TYPE STRING,
DTVERS TYPE STRING,
ETID TYPE STRING,
PFADLEVEL TYPE STRING,
DEPFAD TYPE STRING,
DEID TYPE STRING,
DYNPR TYPE STRING,
STRUC TYPE STRING,
STRUCTYP TYPE STRING,
DETYP TYPE STRING,
BREITE TYPE STRING,
SCRY TYPE STRING,
SCRX TYPE STRING,
ALIAS1 TYPE STRING,
DYNFNLANG TYPE STRING,
DYNNUM TYPE STRING,
IFNAME TYPE STRING,
TXTLEN TYPE STRING,
DETEXT TYPE STRING,
DIOPT1 TYPE STRING,
DIOPT2 TYPE STRING,
DIOPT3 TYPE STRING,
DIOPT4 TYPE STRING,
DIOPT5 TYPE STRING,
VARLOOP TYPE STRING,
FUNKTION1 TYPE STRING,
FKTPUSH TYPE STRING,
MODPUSH TYPE STRING,
ICON_TEXT TYPE STRING,
ICON_NAME TYPE STRING,
ICON_SIZE TYPE STRING,
ERUSR TYPE STRING,
ERDAT TYPE STRING,
UPUSR TYPE STRING,
UPDAT TYPE STRING,
STATUS TYPE STRING,
LNGTOTAL TYPE STRING,
DIOPT6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2ET_FPUSH_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_RN2ET_FPUSH_STR-MANDT sy-vline 
WA_RN2ET_FPUSH_STR-EINRI sy-vline 
WA_RN2ET_FPUSH_STR-DTID sy-vline 
WA_RN2ET_FPUSH_STR-DTVERS sy-vline 
WA_RN2ET_FPUSH_STR-ETID sy-vline 
WA_RN2ET_FPUSH_STR-PFADLEVEL sy-vline 
WA_RN2ET_FPUSH_STR-DEPFAD sy-vline 
WA_RN2ET_FPUSH_STR-DEID sy-vline 
WA_RN2ET_FPUSH_STR-DYNPR sy-vline 
WA_RN2ET_FPUSH_STR-STRUC sy-vline 
WA_RN2ET_FPUSH_STR-STRUCTYP sy-vline 
WA_RN2ET_FPUSH_STR-DETYP sy-vline 
WA_RN2ET_FPUSH_STR-BREITE sy-vline 
WA_RN2ET_FPUSH_STR-SCRY sy-vline 
WA_RN2ET_FPUSH_STR-SCRX sy-vline 
WA_RN2ET_FPUSH_STR-ALIAS1 sy-vline 
WA_RN2ET_FPUSH_STR-DYNFNLANG sy-vline 
WA_RN2ET_FPUSH_STR-DYNNUM sy-vline 
WA_RN2ET_FPUSH_STR-IFNAME sy-vline 
WA_RN2ET_FPUSH_STR-TXTLEN sy-vline 
WA_RN2ET_FPUSH_STR-DETEXT sy-vline 
WA_RN2ET_FPUSH_STR-DIOPT1 sy-vline 
WA_RN2ET_FPUSH_STR-DIOPT2 sy-vline 
WA_RN2ET_FPUSH_STR-DIOPT3 sy-vline 
WA_RN2ET_FPUSH_STR-DIOPT4 sy-vline 
WA_RN2ET_FPUSH_STR-DIOPT5 sy-vline 
WA_RN2ET_FPUSH_STR-VARLOOP sy-vline 
WA_RN2ET_FPUSH_STR-FUNKTION1 sy-vline 
WA_RN2ET_FPUSH_STR-FKTPUSH sy-vline 
WA_RN2ET_FPUSH_STR-MODPUSH sy-vline 
WA_RN2ET_FPUSH_STR-ICON_TEXT sy-vline 
WA_RN2ET_FPUSH_STR-ICON_NAME sy-vline 
WA_RN2ET_FPUSH_STR-ICON_SIZE sy-vline 
WA_RN2ET_FPUSH_STR-ERUSR sy-vline 
WA_RN2ET_FPUSH_STR-ERDAT sy-vline 
WA_RN2ET_FPUSH_STR-UPUSR sy-vline 
WA_RN2ET_FPUSH_STR-UPDAT sy-vline 
WA_RN2ET_FPUSH_STR-STATUS sy-vline 
WA_RN2ET_FPUSH_STR-LNGTOTAL sy-vline 
WA_RN2ET_FPUSH_STR-DIOPT6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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