ABAP Select data from SAP table FINS_ACDOC_ITEM_SUBST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_ACDOC_ITEM_SUBST
*  INTO TABLE @DATA(IT_FINS_ACDOC_ITEM_SUBST2).
*--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_FINS_ACDOC_ITEM_SUBST INDEX 1 INTO DATA(WA_FINS_ACDOC_ITEM_SUBST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_ACDOC_ITEM_SUBST>-MANDT = 1.
<FINS_ACDOC_ITEM_SUBST>-AWTYP = 1.
<FINS_ACDOC_ITEM_SUBST>-AWREF = 1.
<FINS_ACDOC_ITEM_SUBST>-AWORG = 1.
<FINS_ACDOC_ITEM_SUBST>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINS_ACDOC_ITEM_SUBST-FKBER, sy-vline,
  WA_FINS_ACDOC_ITEM_SUBST-PFKBER, sy-vline,
  WA_FINS_ACDOC_ITEM_SUBST-PRCTR, sy-vline,
  WA_FINS_ACDOC_ITEM_SUBST-PPRCTR, sy-vline,
  WA_FINS_ACDOC_ITEM_SUBST-SEGMENT, sy-vline,
  WA_FINS_ACDOC_ITEM_SUBST-PSEGMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_ACDOC_ITEM_SUBST 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_FINS_ACDOC_ITEM_SUBST 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_FINS_ACDOC_ITEM_SUBST INTO WA_FINS_ACDOC_ITEM_SUBST.


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

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

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

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

*Conversion exit ALPHA, internal->external for field PSEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINS_ACDOC_ITEM_SUBST-PSEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_ACDOC_ITEM_SUBST-PSEGMENT.
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_FINS_ACDOC_ITEM_SUBST_STR, 
MANDT TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
POSNR TYPE STRING,
FKBER TYPE STRING,
PFKBER TYPE STRING,
PRCTR TYPE STRING,
PPRCTR TYPE STRING,
SEGMENT TYPE STRING,
PSEGMENT TYPE STRING,
GSBER TYPE STRING,
PARGB TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
RMVCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_ACDOC_ITEM_SUBST_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_FINS_ACDOC_ITEM_SUBST_STR-MANDT sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-AWTYP sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-AWREF sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-AWORG sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-POSNR sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-FKBER sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-PFKBER sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-PRCTR sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-PPRCTR sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-SEGMENT sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-PSEGMENT sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-GSBER sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-PARGB sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-ZUONR sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-SGTXT sy-vline 
WA_FINS_ACDOC_ITEM_SUBST_STR-RMVCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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