ABAP Select data from SAP table WMDF_INFOSTR2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WMDF_INFOSTR2 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 WMDF_INFOSTR2. 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 WMDF_INFOSTR2 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_WMDF_INFOSTR2 TYPE STANDARD TABLE OF WMDF_INFOSTR2,
      WA_WMDF_INFOSTR2 TYPE WMDF_INFOSTR2,
      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: <WMDF_INFOSTR2> TYPE WMDF_INFOSTR2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WMDF_INFOSTR2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WMDF_INFOSTR2
  INTO TABLE IT_WMDF_INFOSTR2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WMDF_INFOSTR2
*  INTO TABLE @DATA(IT_WMDF_INFOSTR22).
*--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_WMDF_INFOSTR2 INDEX 1 INTO DATA(WA_WMDF_INFOSTR22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WMDF_INFOSTR2 ASSIGNING <WMDF_INFOSTR2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WMDF_INFOSTR2>-ARTNR = 1.
<WMDF_INFOSTR2>-VKORG = 1.
<WMDF_INFOSTR2>-VTWEG = 1.
<WMDF_INFOSTR2>-WERKS = 1.
<WMDF_INFOSTR2>-SPWOC = 1.

ENDLOOP.

LOOP AT IT_WMDF_INFOSTR2 INTO WA_WMDF_INFOSTR2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WMDF_INFOSTR2-UMSMNG, sy-vline,
  WA_WMDF_INFOSTR2-UNITA, sy-vline,
  WA_WMDF_INFOSTR2-UMSGVO, sy-vline,
  WA_WMDF_INFOSTR2-RETCU, sy-vline,
  WA_WMDF_INFOSTR2-BVLMNG, sy-vline,
  WA_WMDF_INFOSTR2-WESMNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WMDF_INFOSTR2 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_WMDF_INFOSTR2 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_WMDF_INFOSTR2 INTO WA_WMDF_INFOSTR2.


*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 MATN1, internal->external for field ARTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WMDF_INFOSTR2-ARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WMDF_INFOSTR2-ARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPWOC
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_WMDF_INFOSTR2-SPWOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WMDF_INFOSTR2-SPWOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITA
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WMDF_INFOSTR2-UNITA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WMDF_INFOSTR2-UNITA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WMDF_INFOSTR2-UNITB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WMDF_INFOSTR2-UNITB.
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_WMDF_INFOSTR2_STR, 
ARTNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WERKS TYPE STRING,
SPWOC TYPE STRING,
UMSMNG TYPE STRING,
UNITA TYPE STRING,
UMSGVO TYPE STRING,
RETCU TYPE STRING,
BVLMNG TYPE STRING,
WESMNG TYPE STRING,
UNITB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WMDF_INFOSTR2_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_WMDF_INFOSTR2_STR-ARTNR sy-vline 
WA_WMDF_INFOSTR2_STR-VKORG sy-vline 
WA_WMDF_INFOSTR2_STR-VTWEG sy-vline 
WA_WMDF_INFOSTR2_STR-WERKS sy-vline 
WA_WMDF_INFOSTR2_STR-SPWOC sy-vline 
WA_WMDF_INFOSTR2_STR-UMSMNG sy-vline 
WA_WMDF_INFOSTR2_STR-UNITA sy-vline 
WA_WMDF_INFOSTR2_STR-UMSGVO sy-vline 
WA_WMDF_INFOSTR2_STR-RETCU sy-vline 
WA_WMDF_INFOSTR2_STR-BVLMNG sy-vline 
WA_WMDF_INFOSTR2_STR-WESMNG sy-vline 
WA_WMDF_INFOSTR2_STR-UNITB sy-vline      INTO ld_text SEPARATED BY SPACE.

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