ABAP Select data from SAP table FMRPF_SEL_SCREEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMRPF_SEL_SCREEN
*  INTO TABLE @DATA(IT_FMRPF_SEL_SCREEN2).
*--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_FMRPF_SEL_SCREEN INDEX 1 INTO DATA(WA_FMRPF_SEL_SCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMRPF_SEL_SCREEN>-FIKRS = 1.
<FMRPF_SEL_SCREEN>-RLDNR = 1.
<FMRPF_SEL_SCREEN>-GJAHR = 1.
<FMRPF_SEL_SCREEN>-PERIO = 1.
<FMRPF_SEL_SCREEN>-ZHLDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMRPF_SEL_SCREEN-FONDS, sy-vline,
  WA_FMRPF_SEL_SCREEN-FISTL, sy-vline,
  WA_FMRPF_SEL_SCREEN-FIPEX, sy-vline,
  WA_FMRPF_SEL_SCREEN-FAREA, sy-vline,
  WA_FMRPF_SEL_SCREEN-MEASURE, sy-vline,
  WA_FMRPF_SEL_SCREEN-USERDIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMRPF_SEL_SCREEN 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_FMRPF_SEL_SCREEN 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_FMRPF_SEL_SCREEN INTO WA_FMRPF_SEL_SCREEN.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMRPF_SEL_SCREEN-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRPF_SEL_SCREEN-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMRPF_SEL_SCREEN-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRPF_SEL_SCREEN-FIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMRPF_SEL_SCREEN-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRPF_SEL_SCREEN-GRANT_NBR.
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_FMRPF_SEL_SCREEN_STR, 
FIKRS TYPE STRING,
RLDNR TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
ZHLDT TYPE STRING,
FONDS TYPE STRING,
FISTL TYPE STRING,
FIPEX TYPE STRING,
FAREA TYPE STRING,
MEASURE TYPE STRING,
USERDIM TYPE STRING,
BUDGET_PD TYPE STRING,
GRANT_NBR TYPE STRING,
BTART TYPE STRING,
WRTTP TYPE STRING,
VRGNG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMRPF_SEL_SCREEN_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_FMRPF_SEL_SCREEN_STR-FIKRS sy-vline 
WA_FMRPF_SEL_SCREEN_STR-RLDNR sy-vline 
WA_FMRPF_SEL_SCREEN_STR-GJAHR sy-vline 
WA_FMRPF_SEL_SCREEN_STR-PERIO sy-vline 
WA_FMRPF_SEL_SCREEN_STR-ZHLDT sy-vline 
WA_FMRPF_SEL_SCREEN_STR-FONDS sy-vline 
WA_FMRPF_SEL_SCREEN_STR-FISTL sy-vline 
WA_FMRPF_SEL_SCREEN_STR-FIPEX sy-vline 
WA_FMRPF_SEL_SCREEN_STR-FAREA sy-vline 
WA_FMRPF_SEL_SCREEN_STR-MEASURE sy-vline 
WA_FMRPF_SEL_SCREEN_STR-USERDIM sy-vline 
WA_FMRPF_SEL_SCREEN_STR-BUDGET_PD sy-vline 
WA_FMRPF_SEL_SCREEN_STR-GRANT_NBR sy-vline 
WA_FMRPF_SEL_SCREEN_STR-BTART sy-vline 
WA_FMRPF_SEL_SCREEN_STR-WRTTP sy-vline 
WA_FMRPF_SEL_SCREEN_STR-VRGNG sy-vline      INTO ld_text SEPARATED BY SPACE.

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