ABAP Select data from SAP table IRUFSTMMATDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRUFSTMMATDOC
*  INTO TABLE @DATA(IT_IRUFSTMMATDOC2).
*--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_IRUFSTMMATDOC INDEX 1 INTO DATA(WA_IRUFSTMMATDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRUFSTMMATDOC>-MANDT = 1.
<IRUFSTMMATDOC>-STATRYRPTGENTITY = 1.
<IRUFSTMMATDOC>-STATRYRPTCATEGORY = 1.
<IRUFSTMMATDOC>-STATRYRPTRUNID = 1.
<IRUFSTMMATDOC>-MATERIALDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRUFSTMMATDOC-MATERIALDOCUMENTYEAR, sy-vline,
  WA_IRUFSTMMATDOC-MATERIALDOCUMENTITEM, sy-vline,
  WA_IRUFSTMMATDOC-MATERIAL, sy-vline,
  WA_IRUFSTMMATDOC-VALUATIONAREA, sy-vline,
  WA_IRUFSTMMATDOC-INVENTORYVALUATIONTYPE, sy-vline,
  WA_IRUFSTMMATDOC-PLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRUFSTMMATDOC 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_IRUFSTMMATDOC 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_IRUFSTMMATDOC INTO WA_IRUFSTMMATDOC.


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

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

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

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IRUFSTMMATDOC-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRUFSTMMATDOC-MATERIALBASEUNIT.
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_IRUFSTMMATDOC_STR, 
MANDT TYPE STRING,
STATRYRPTGENTITY TYPE STRING,
STATRYRPTCATEGORY TYPE STRING,
STATRYRPTRUNID TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
MATERIALDOCUMENTITEM TYPE STRING,
MATERIAL TYPE STRING,
VALUATIONAREA TYPE STRING,
INVENTORYVALUATIONTYPE TYPE STRING,
PLANT TYPE STRING,
TOTALAMOUNTINLOCALCURRENCY TYPE STRING,
CURRENCY TYPE STRING,
QUANTITY TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
POSTINGDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRUFSTMMATDOC_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_IRUFSTMMATDOC_STR-MANDT sy-vline 
WA_IRUFSTMMATDOC_STR-STATRYRPTGENTITY sy-vline 
WA_IRUFSTMMATDOC_STR-STATRYRPTCATEGORY sy-vline 
WA_IRUFSTMMATDOC_STR-STATRYRPTRUNID sy-vline 
WA_IRUFSTMMATDOC_STR-MATERIALDOCUMENT sy-vline 
WA_IRUFSTMMATDOC_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_IRUFSTMMATDOC_STR-MATERIALDOCUMENTITEM sy-vline 
WA_IRUFSTMMATDOC_STR-MATERIAL sy-vline 
WA_IRUFSTMMATDOC_STR-VALUATIONAREA sy-vline 
WA_IRUFSTMMATDOC_STR-INVENTORYVALUATIONTYPE sy-vline 
WA_IRUFSTMMATDOC_STR-PLANT sy-vline 
WA_IRUFSTMMATDOC_STR-TOTALAMOUNTINLOCALCURRENCY sy-vline 
WA_IRUFSTMMATDOC_STR-CURRENCY sy-vline 
WA_IRUFSTMMATDOC_STR-QUANTITY sy-vline 
WA_IRUFSTMMATDOC_STR-MATERIALBASEUNIT sy-vline 
WA_IRUFSTMMATDOC_STR-POSTINGDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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