ABAP Select data from SAP table FPE3_REF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FPE3_REF 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 FPE3_REF. 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 FPE3_REF 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_FPE3_REF TYPE STANDARD TABLE OF FPE3_REF,
      WA_FPE3_REF TYPE FPE3_REF,
      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: <FPE3_REF> TYPE FPE3_REF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FPE3_REF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FPE3_REF
  INTO TABLE IT_FPE3_REF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FPE3_REF
*  INTO TABLE @DATA(IT_FPE3_REF2).
*--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_FPE3_REF INDEX 1 INTO DATA(WA_FPE3_REF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FPE3_REF ASSIGNING <FPE3_REF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FPE3_REF>-STABP = 1.
<FPE3_REF>-HERKF = 1.
<FPE3_REF>-HTEXT = 1.
<FPE3_REF>-OPBEL = 1.
<FPE3_REF>-BUDAT = 1.

ENDLOOP.

LOOP AT IT_FPE3_REF INTO WA_FPE3_REF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FPE3_REF-AUGBT, sy-vline,
  WA_FPE3_REF-AUGWA, sy-vline,
  WA_FPE3_REF-PRCID, sy-vline,
  WA_FPE3_REF-ERNAM, sy-vline,
  WA_FPE3_REF-CPUDT, sy-vline,
  WA_FPE3_REF-CPUTM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FPE3_REF 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_FPE3_REF 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_FPE3_REF INTO WA_FPE3_REF.


*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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FPE3_REF-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FPE3_REF-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NRZAS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FPE3_REF-NRZAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FPE3_REF-NRZAS.
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_FPE3_REF_STR, 
STABP TYPE STRING,
HERKF TYPE STRING,
HTEXT TYPE STRING,
OPBEL TYPE STRING,
BUDAT TYPE STRING,
AUGBT TYPE STRING,
AUGWA TYPE STRING,
PRCID TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
RTEXT TYPE STRING,
NRZAS TYPE STRING,
IBAN TYPE STRING,
SWIFT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FPE3_REF_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_FPE3_REF_STR-STABP sy-vline 
WA_FPE3_REF_STR-HERKF sy-vline 
WA_FPE3_REF_STR-HTEXT sy-vline 
WA_FPE3_REF_STR-OPBEL sy-vline 
WA_FPE3_REF_STR-BUDAT sy-vline 
WA_FPE3_REF_STR-AUGBT sy-vline 
WA_FPE3_REF_STR-AUGWA sy-vline 
WA_FPE3_REF_STR-PRCID sy-vline 
WA_FPE3_REF_STR-ERNAM sy-vline 
WA_FPE3_REF_STR-CPUDT sy-vline 
WA_FPE3_REF_STR-CPUTM sy-vline 
WA_FPE3_REF_STR-BANKS sy-vline 
WA_FPE3_REF_STR-BANKL sy-vline 
WA_FPE3_REF_STR-BANKN sy-vline 
WA_FPE3_REF_STR-RTEXT sy-vline 
WA_FPE3_REF_STR-NRZAS sy-vline 
WA_FPE3_REF_STR-IBAN sy-vline 
WA_FPE3_REF_STR-SWIFT sy-vline      INTO ld_text SEPARATED BY SPACE.

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