ABAP Select data from SAP table FMPPS_IF_DOCUMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMPPS_IF_DOCUMENT
*  INTO TABLE @DATA(IT_FMPPS_IF_DOCUMENT2).
*--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_FMPPS_IF_DOCUMENT INDEX 1 INTO DATA(WA_FMPPS_IF_DOCUMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMPPS_IF_DOCUMENT>-BELNR = 1.
<FMPPS_IF_DOCUMENT>-RFBLNR = 1.
<FMPPS_IF_DOCUMENT>-RFORG = 1.
<FMPPS_IF_DOCUMENT>-RFTYP = 1.
<FMPPS_IF_DOCUMENT>-RFSYS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMPPS_IF_DOCUMENT-BLTYP, sy-vline,
  WA_FMPPS_IF_DOCUMENT-BLDAT, sy-vline,
  WA_FMPPS_IF_DOCUMENT-BUDAT, sy-vline,
  WA_FMPPS_IF_DOCUMENT-BLART, sy-vline,
  WA_FMPPS_IF_DOCUMENT-XBLNR, sy-vline,
  WA_FMPPS_IF_DOCUMENT-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMPPS_IF_DOCUMENT 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_FMPPS_IF_DOCUMENT 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_FMPPS_IF_DOCUMENT INTO WA_FMPPS_IF_DOCUMENT.


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

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

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FMPPS_IF_DOCUMENT-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPPS_IF_DOCUMENT-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOTKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMPPS_IF_DOCUMENT-LOTKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPPS_IF_DOCUMENT-LOTKZ.
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_FMPPS_IF_DOCUMENT_STR, 
BELNR TYPE STRING,
RFBLNR TYPE STRING,
RFORG TYPE STRING,
RFTYP TYPE STRING,
RFSYS TYPE STRING,
BLTYP TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
BLART TYPE STRING,
XBLNR TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
KURSF TYPE STRING,
WWERT TYPE STRING,
COMBUDGET TYPE STRING,
PAYBUDGET TYPE STRING,
LOTKZ TYPE STRING,
KTEXT TYPE STRING,
DOCLOCK TYPE STRING,
PARK_DOC TYPE STRING,
POSITIONS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMPPS_IF_DOCUMENT_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_FMPPS_IF_DOCUMENT_STR-BELNR sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-RFBLNR sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-RFORG sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-RFTYP sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-RFSYS sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-BLTYP sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-BLDAT sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-BUDAT sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-BLART sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-XBLNR sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-WAERS sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-BUKRS sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-KURSF sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-WWERT sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-COMBUDGET sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-PAYBUDGET sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-LOTKZ sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-KTEXT sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-DOCLOCK sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-PARK_DOC sy-vline 
WA_FMPPS_IF_DOCUMENT_STR-POSITIONS sy-vline      INTO ld_text SEPARATED BY SPACE.

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