ABAP Select data from SAP table FMPP_ALV_REF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMPP_ALV_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 FMPP_ALV_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 FMPP_ALV_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_FMPP_ALV_REF TYPE STANDARD TABLE OF FMPP_ALV_REF,
      WA_FMPP_ALV_REF TYPE FMPP_ALV_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: <FMPP_ALV_REF> TYPE FMPP_ALV_REF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMPP_ALV_REF
*  INTO TABLE @DATA(IT_FMPP_ALV_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_FMPP_ALV_REF INDEX 1 INTO DATA(WA_FMPP_ALV_REF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMPP_ALV_REF>-MANDT = 1.
<FMPP_ALV_REF>-BUKRS = 1.
<FMPP_ALV_REF>-BELNR = 1.
<FMPP_ALV_REF>-GJAHR = 1.
<FMPP_ALV_REF>-BUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMPP_ALV_REF-SPL_NO, sy-vline,
  WA_FMPP_ALV_REF-FIPOS, sy-vline,
  WA_FMPP_ALV_REF-FISTL, sy-vline,
  WA_FMPP_ALV_REF-GEBER, sy-vline,
  WA_FMPP_ALV_REF-GRANT_NBR, sy-vline,
  WA_FMPP_ALV_REF-GSBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMPP_ALV_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_FMPP_ALV_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_FMPP_ALV_REF INTO WA_FMPP_ALV_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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMPP_ALV_REF-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPP_ALV_REF-BELNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_FMPP_ALV_REF-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPP_ALV_REF-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMPP_ALV_REF-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPP_ALV_REF-SEGMENT.
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_FMPP_ALV_REF_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
SPL_NO TYPE STRING,
FIPOS TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
SEGMENT TYPE STRING,
BUDGET_PD TYPE STRING,
PP_ID TYPE STRING,
PP_ID_T TYPE STRING,
USNAM TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
XLPAY TYPE STRING,
SHKZG TYPE STRING,
ORBTR TYPE STRING,
ENBTR TYPE STRING,
RMBTR TYPE STRING,
WAERS TYPE STRING,
ZLSPR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMPP_ALV_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_FMPP_ALV_REF_STR-MANDT sy-vline 
WA_FMPP_ALV_REF_STR-BUKRS sy-vline 
WA_FMPP_ALV_REF_STR-BELNR sy-vline 
WA_FMPP_ALV_REF_STR-GJAHR sy-vline 
WA_FMPP_ALV_REF_STR-BUZEI sy-vline 
WA_FMPP_ALV_REF_STR-SPL_NO sy-vline 
WA_FMPP_ALV_REF_STR-FIPOS sy-vline 
WA_FMPP_ALV_REF_STR-FISTL sy-vline 
WA_FMPP_ALV_REF_STR-GEBER sy-vline 
WA_FMPP_ALV_REF_STR-GRANT_NBR sy-vline 
WA_FMPP_ALV_REF_STR-GSBER sy-vline 
WA_FMPP_ALV_REF_STR-PRCTR sy-vline 
WA_FMPP_ALV_REF_STR-SEGMENT sy-vline 
WA_FMPP_ALV_REF_STR-BUDGET_PD sy-vline 
WA_FMPP_ALV_REF_STR-PP_ID sy-vline 
WA_FMPP_ALV_REF_STR-PP_ID_T sy-vline 
WA_FMPP_ALV_REF_STR-USNAM sy-vline 
WA_FMPP_ALV_REF_STR-BLDAT sy-vline 
WA_FMPP_ALV_REF_STR-BUDAT sy-vline 
WA_FMPP_ALV_REF_STR-XLPAY sy-vline 
WA_FMPP_ALV_REF_STR-SHKZG sy-vline 
WA_FMPP_ALV_REF_STR-ORBTR sy-vline 
WA_FMPP_ALV_REF_STR-ENBTR sy-vline 
WA_FMPP_ALV_REF_STR-RMBTR sy-vline 
WA_FMPP_ALV_REF_STR-WAERS sy-vline 
WA_FMPP_ALV_REF_STR-ZLSPR sy-vline      INTO ld_text SEPARATED BY SPACE.

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