ABAP Select data from SAP table FMPA_DISPLAY_DOCS_LONG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMPA_DISPLAY_DOCS_LONG
*  INTO TABLE @DATA(IT_FMPA_DISPLAY_DOCS_LONG2).
*--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_FMPA_DISPLAY_DOCS_LONG INDEX 1 INTO DATA(WA_FMPA_DISPLAY_DOCS_LONG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMPA_DISPLAY_DOCS_LONG>-BUKRS = 1.
<FMPA_DISPLAY_DOCS_LONG>-KNBELNR = 1.
<FMPA_DISPLAY_DOCS_LONG>-KNGJAHR = 1.
<FMPA_DISPLAY_DOCS_LONG>-VOBUKRS = 1.
<FMPA_DISPLAY_DOCS_LONG>-VOBELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMPA_DISPLAY_DOCS_LONG-VOGJAHR, sy-vline,
  WA_FMPA_DISPLAY_DOCS_LONG-ZHLDT, sy-vline,
  WA_FMPA_DISPLAY_DOCS_LONG-PERIO, sy-vline,
  WA_FMPA_DISPLAY_DOCS_LONG-TRBTR, sy-vline,
  WA_FMPA_DISPLAY_DOCS_LONG-TWAER, sy-vline,
  WA_FMPA_DISPLAY_DOCS_LONG-FKBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMPA_DISPLAY_DOCS_LONG 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_FMPA_DISPLAY_DOCS_LONG 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_FMPA_DISPLAY_DOCS_LONG INTO WA_FMPA_DISPLAY_DOCS_LONG.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMPA_DISPLAY_DOCS_LONG-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPA_DISPLAY_DOCS_LONG-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_FMPA_DISPLAY_DOCS_LONG_STR, 
BUKRS TYPE STRING,
KNBELNR TYPE STRING,
KNGJAHR TYPE STRING,
VOBUKRS TYPE STRING,
VOBELNR TYPE STRING,
VOGJAHR TYPE STRING,
ZHLDT TYPE STRING,
PERIO TYPE STRING,
TRBTR TYPE STRING,
TWAER TYPE STRING,
FKBTR TYPE STRING,
WAERS TYPE STRING,
GJAHR TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FIPEX TYPE STRING,
FAREA TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
CFLEV TYPE STRING,
STATS TYPE STRING,
PSOBT TYPE STRING,
NOTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMPA_DISPLAY_DOCS_LONG_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_FMPA_DISPLAY_DOCS_LONG_STR-BUKRS sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-KNBELNR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-KNGJAHR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-VOBUKRS sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-VOBELNR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-VOGJAHR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-ZHLDT sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-PERIO sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-TRBTR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-TWAER sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-FKBTR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-WAERS sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-GJAHR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-FISTL sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-FONDS sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-FIPEX sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-FAREA sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-MEASURE sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-GRANT_NBR sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-CFLEV sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-STATS sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-PSOBT sy-vline 
WA_FMPA_DISPLAY_DOCS_LONG_STR-NOTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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