ABAP Select data from SAP table FAGL_S_DI_DOCUMENT_ITEM_M into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FAGL_S_DI_DOCUMENT_ITEM_M
*  INTO TABLE @DATA(IT_FAGL_S_DI_DOCUMENT_ITEM_M2).
*--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_FAGL_S_DI_DOCUMENT_ITEM_M INDEX 1 INTO DATA(WA_FAGL_S_DI_DOCUMENT_ITEM_M2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FAGL_S_DI_DOCUMENT_ITEM_M>-RLDNR = 1.
<FAGL_S_DI_DOCUMENT_ITEM_M>-RLDNR_T = 1.
<FAGL_S_DI_DOCUMENT_ITEM_M>-BUKRS = 1.
<FAGL_S_DI_DOCUMENT_ITEM_M>-GJAHR = 1.
<FAGL_S_DI_DOCUMENT_ITEM_M>-BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FAGL_S_DI_DOCUMENT_ITEM_M-ISSUE_TYPE, sy-vline,
  WA_FAGL_S_DI_DOCUMENT_ITEM_M-BUZEI, sy-vline,
  WA_FAGL_S_DI_DOCUMENT_ITEM_M-KOART, sy-vline,
  WA_FAGL_S_DI_DOCUMENT_ITEM_M-ACCNR, sy-vline,
  WA_FAGL_S_DI_DOCUMENT_ITEM_M-ACCNR_T, sy-vline,
  WA_FAGL_S_DI_DOCUMENT_ITEM_M-KTOPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FAGL_S_DI_DOCUMENT_ITEM_M 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_FAGL_S_DI_DOCUMENT_ITEM_M 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_FAGL_S_DI_DOCUMENT_ITEM_M INTO WA_FAGL_S_DI_DOCUMENT_ITEM_M.


*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_FAGL_S_DI_DOCUMENT_ITEM_M-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAGL_S_DI_DOCUMENT_ITEM_M-RLDNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AU132, internal->external for field TAMNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FAGL_S_DI_DOCUMENT_ITEM_M-TAMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAGL_S_DI_DOCUMENT_ITEM_M-TAMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field LAMNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FAGL_S_DI_DOCUMENT_ITEM_M-LAMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAGL_S_DI_DOCUMENT_ITEM_M-LAMNT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FAGL_S_DI_DOCUMENT_ITEM_M-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAGL_S_DI_DOCUMENT_ITEM_M-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAGL_S_DI_DOCUMENT_ITEM_M-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAGL_S_DI_DOCUMENT_ITEM_M-KSTAR.
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_FAGL_S_DI_DOCUMENT_ITEM_M_STR, 
RLDNR TYPE STRING,
RLDNR_T TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
ISSUE_TYPE TYPE STRING,
BUZEI TYPE STRING,
KOART TYPE STRING,
ACCNR TYPE STRING,
ACCNR_T TYPE STRING,
KTOPL TYPE STRING,
BSCHL TYPE STRING,
BSCHL_T TYPE STRING,
TAMNT TYPE STRING,
TCURR TYPE STRING,
LAMNT TYPE STRING,
LCURR TYPE STRING,
ZTERM TYPE STRING,
ZFBDT TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
PRCTR TYPE STRING,
SEGMENT TYPE STRING,
GSBER TYPE STRING,
ZUONR TYPE STRING,
VALUT TYPE STRING,
MATNR TYPE STRING,
KSTAR TYPE STRING,
DUMMY_INCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FAGL_S_DI_DOCUMENT_ITEM_M_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_FAGL_S_DI_DOCUMENT_ITEM_M_STR-RLDNR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-RLDNR_T sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-BUKRS sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-GJAHR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-BELNR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-ISSUE_TYPE sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-BUZEI sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-KOART sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-ACCNR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-ACCNR_T sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-KTOPL sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-BSCHL sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-BSCHL_T sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-TAMNT sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-TCURR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-LAMNT sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-LCURR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-ZTERM sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-ZFBDT sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-KOKRS sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-KOSTL sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-AUFNR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-PRCTR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-SEGMENT sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-GSBER sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-ZUONR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-VALUT sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-MATNR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-KSTAR sy-vline 
WA_FAGL_S_DI_DOCUMENT_ITEM_M_STR-DUMMY_INCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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