ABAP Select data from SAP table FIAR_ISSUED_DOCUMENT_DETAILS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAR_ISSUED_DOCUMENT_DETAILS
*  INTO TABLE @DATA(IT_FIAR_ISSUED_DOCUMENT_DETAILS2).
*--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_FIAR_ISSUED_DOCUMENT_DETAILS INDEX 1 INTO DATA(WA_FIAR_ISSUED_DOCUMENT_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAR_ISSUED_DOCUMENT_DETAILS>-BUKRS = 1.
<FIAR_ISSUED_DOCUMENT_DETAILS>-DOC_NUM = 1.
<FIAR_ISSUED_DOCUMENT_DETAILS>-GJAHR = 1.
<FIAR_ISSUED_DOCUMENT_DETAILS>-DOC_TYP_ISSUE = 1.
<FIAR_ISSUED_DOCUMENT_DETAILS>-FIS_CNTRL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAR_ISSUED_DOCUMENT_DETAILS-DOC_DATE, sy-vline,
  WA_FIAR_ISSUED_DOCUMENT_DETAILS-BRANCH_ISSUED, sy-vline,
  WA_FIAR_ISSUED_DOCUMENT_DETAILS-OFC_DOC_NUM_ISS, sy-vline,
  WA_FIAR_ISSUED_DOCUMENT_DETAILS-OFC_DOC_NUM_UPTO_ISS, sy-vline,
  WA_FIAR_ISSUED_DOCUMENT_DETAILS-QUANTITY, sy-vline,
  WA_FIAR_ISSUED_DOCUMENT_DETAILS-UNIT_MEASURE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAR_ISSUED_DOCUMENT_DETAILS 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_FIAR_ISSUED_DOCUMENT_DETAILS 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_FIAR_ISSUED_DOCUMENT_DETAILS INTO WA_FIAR_ISSUED_DOCUMENT_DETAILS.


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

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

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

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

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

*Conversion exit AU132, internal->external for field SUB_TOT_REC
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FIAR_ISSUED_DOCUMENT_DETAILS-SUB_TOT_REC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAR_ISSUED_DOCUMENT_DETAILS-SUB_TOT_REC.
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_FIAR_ISSUED_DOCUMENT_DETAILS_STR, 
BUKRS TYPE STRING,
DOC_NUM TYPE STRING,
GJAHR TYPE STRING,
DOC_TYP_ISSUE TYPE STRING,
FIS_CNTRL TYPE STRING,
DOC_DATE TYPE STRING,
BRANCH_ISSUED TYPE STRING,
OFC_DOC_NUM_ISS TYPE STRING,
OFC_DOC_NUM_UPTO_ISS TYPE STRING,
QUANTITY TYPE STRING,
UNIT_MEASURE TYPE STRING,
UNIT_PRICE TYPE STRING,
DIS_AMNT TYPE STRING,
ADJ_AMNT TYPE STRING,
SUB_TOT_REC TYPE STRING,
VAT_RATE TYPE STRING,
TAX_IND TYPE STRING,
VOID_IND TYPE STRING,
FREE_DESIGN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAR_ISSUED_DOCUMENT_DETAILS_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_FIAR_ISSUED_DOCUMENT_DETAILS_STR-BUKRS sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-DOC_NUM sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-GJAHR sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-DOC_TYP_ISSUE sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-FIS_CNTRL sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-DOC_DATE sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-BRANCH_ISSUED sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-OFC_DOC_NUM_ISS sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-OFC_DOC_NUM_UPTO_ISS sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-QUANTITY sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-UNIT_MEASURE sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-UNIT_PRICE sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-DIS_AMNT sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-ADJ_AMNT sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-SUB_TOT_REC sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-VAT_RATE sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-TAX_IND sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-VOID_IND sy-vline 
WA_FIAR_ISSUED_DOCUMENT_DETAILS_STR-FREE_DESIGN sy-vline      INTO ld_text SEPARATED BY SPACE.

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