ABAP Select data from SAP table ICNMATSTKACCTDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICNMATSTKACCTDOC
*  INTO TABLE @DATA(IT_ICNMATSTKACCTDOC2).
*--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_ICNMATSTKACCTDOC INDEX 1 INTO DATA(WA_ICNMATSTKACCTDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICNMATSTKACCTDOC>-MANDT = 1.
<ICNMATSTKACCTDOC>-ACCOUNTINGDOCUMENT = 1.
<ICNMATSTKACCTDOC>-FISCALYEAR = 1.
<ICNMATSTKACCTDOC>-ACCOUNTINGDOCUMENTITEM = 1.
<ICNMATSTKACCTDOC>-LEDGER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICNMATSTKACCTDOC-COMPANYCODE, sy-vline,
  WA_ICNMATSTKACCTDOC-COMPANYCODECURRENCY, sy-vline,
  WA_ICNMATSTKACCTDOC-STOCKIDENTIFYINGMATERIAL, sy-vline,
  WA_ICNMATSTKACCTDOC-PLANT, sy-vline,
  WA_ICNMATSTKACCTDOC-INVENTORYVALUATIONTYPE, sy-vline,
  WA_ICNMATSTKACCTDOC-INVENTORYSPECIALSTOCKTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICNMATSTKACCTDOC 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_ICNMATSTKACCTDOC 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_ICNMATSTKACCTDOC INTO WA_ICNMATSTKACCTDOC.


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

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

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

*Conversion exit MATN1, internal->external for field STOCKIDENTIFYINGMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ICNMATSTKACCTDOC-STOCKIDENTIFYINGMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNMATSTKACCTDOC-STOCKIDENTIFYINGMATERIAL.
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_ICNMATSTKACCTDOC_STR, 
MANDT TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
LEDGER TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
STOCKIDENTIFYINGMATERIAL TYPE STRING,
PLANT TYPE STRING,
INVENTORYVALUATIONTYPE TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
DEBITCREDITCODE TYPE STRING,
GOODSMOVEMENTSTKAMTINCCCRCY TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICNMATSTKACCTDOC_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_ICNMATSTKACCTDOC_STR-MANDT sy-vline 
WA_ICNMATSTKACCTDOC_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_ICNMATSTKACCTDOC_STR-FISCALYEAR sy-vline 
WA_ICNMATSTKACCTDOC_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_ICNMATSTKACCTDOC_STR-LEDGER sy-vline 
WA_ICNMATSTKACCTDOC_STR-COMPANYCODE sy-vline 
WA_ICNMATSTKACCTDOC_STR-COMPANYCODECURRENCY sy-vline 
WA_ICNMATSTKACCTDOC_STR-STOCKIDENTIFYINGMATERIAL sy-vline 
WA_ICNMATSTKACCTDOC_STR-PLANT sy-vline 
WA_ICNMATSTKACCTDOC_STR-INVENTORYVALUATIONTYPE sy-vline 
WA_ICNMATSTKACCTDOC_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_ICNMATSTKACCTDOC_STR-DEBITCREDITCODE sy-vline 
WA_ICNMATSTKACCTDOC_STR-GOODSMOVEMENTSTKAMTINCCCRCY sy-vline 
WA_ICNMATSTKACCTDOC_STR-POSTINGDATE sy-vline 
WA_ICNMATSTKACCTDOC_STR-DOCUMENTDATE sy-vline 
WA_ICNMATSTKACCTDOC_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_ICNMATSTKACCTDOC_STR-REFERENCEDOCUMENTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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