ABAP Select data from SAP table INWACTUSFIELD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INWACTUSFIELD
*  INTO TABLE @DATA(IT_INWACTUSFIELD2).
*--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_INWACTUSFIELD INDEX 1 INTO DATA(WA_INWACTUSFIELD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INWACTUSFIELD>-MANDT = 1.
<INWACTUSFIELD>-PROJECTNETWORKINTERNALID = 1.
<INWACTUSFIELD>-NETWORKACTIVITYINTERNALID = 1.
<INWACTUSFIELD>-JOINTVENTURE = 1.
<INWACTUSFIELD>-JOINTVENTURESUBCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INWACTUSFIELD-JOINTVENTURECLASS, sy-vline,
  WA_INWACTUSFIELD-JOINTVENTUREOBJECTTYPE, sy-vline,
  WA_INWACTUSFIELD-JNTVENTUREORIGLCOSTOBJECTTYPE, sy-vline,
  WA_INWACTUSFIELD-FREEDEFINEDINDICATOR2, sy-vline,
  WA_INWACTUSFIELD-FREEDEFINEDINDICATOR1, sy-vline,
  WA_INWACTUSFIELD-FREEDEFINEDDATE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INWACTUSFIELD 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_INWACTUSFIELD 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_INWACTUSFIELD INTO WA_INWACTUSFIELD.


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

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

*Conversion exit CUNIT, internal->external for field FREEDEFINEDQUANTITY2UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_INWACTUSFIELD-FREEDEFINEDQUANTITY2UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INWACTUSFIELD-FREEDEFINEDQUANTITY2UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FREEDEFINEDQUANTITY1UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_INWACTUSFIELD-FREEDEFINEDQUANTITY1UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INWACTUSFIELD-FREEDEFINEDQUANTITY1UNIT.
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_INWACTUSFIELD_STR, 
MANDT TYPE STRING,
PROJECTNETWORKINTERNALID TYPE STRING,
NETWORKACTIVITYINTERNALID TYPE STRING,
JOINTVENTURE TYPE STRING,
JOINTVENTURESUBCLASS TYPE STRING,
JOINTVENTURECLASS TYPE STRING,
JOINTVENTUREOBJECTTYPE TYPE STRING,
JNTVENTUREORIGLCOSTOBJECTTYPE TYPE STRING,
FREEDEFINEDINDICATOR2 TYPE STRING,
FREEDEFINEDINDICATOR1 TYPE STRING,
FREEDEFINEDDATE2 TYPE STRING,
FREEDEFINEDDATE1 TYPE STRING,
FREEDEFINEDAMOUNT2 TYPE STRING,
FREEDEFINEDAMOUNT1 TYPE STRING,
FREEDEFINEDQUANTITY2 TYPE STRING,
FREEDEFINEDQUANTITY1 TYPE STRING,
FREEDEFINEDATTRIBUTE04 TYPE STRING,
FREEDEFINEDATTRIBUTE03 TYPE STRING,
FREEDEFINEDATTRIBUTE02 TYPE STRING,
FREEDEFINEDATTRIBUTE01 TYPE STRING,
FREEDEFINEDAMOUNT1CURRENCY TYPE STRING,
FREEDEFINEDAMOUNT2CURRENCY TYPE STRING,
FREEDEFINEDQUANTITY2UNIT TYPE STRING,
FREEDEFINEDQUANTITY1UNIT TYPE STRING,
FREEDEFINEDTABLEFIELDSEMANTIC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INWACTUSFIELD_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_INWACTUSFIELD_STR-MANDT sy-vline 
WA_INWACTUSFIELD_STR-PROJECTNETWORKINTERNALID sy-vline 
WA_INWACTUSFIELD_STR-NETWORKACTIVITYINTERNALID sy-vline 
WA_INWACTUSFIELD_STR-JOINTVENTURE sy-vline 
WA_INWACTUSFIELD_STR-JOINTVENTURESUBCLASS sy-vline 
WA_INWACTUSFIELD_STR-JOINTVENTURECLASS sy-vline 
WA_INWACTUSFIELD_STR-JOINTVENTUREOBJECTTYPE sy-vline 
WA_INWACTUSFIELD_STR-JNTVENTUREORIGLCOSTOBJECTTYPE sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDINDICATOR2 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDINDICATOR1 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDDATE2 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDDATE1 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDAMOUNT2 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDAMOUNT1 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDQUANTITY2 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDQUANTITY1 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDATTRIBUTE04 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDATTRIBUTE03 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDATTRIBUTE02 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDATTRIBUTE01 sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDAMOUNT1CURRENCY sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDAMOUNT2CURRENCY sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDQUANTITY2UNIT sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDQUANTITY1UNIT sy-vline 
WA_INWACTUSFIELD_STR-FREEDEFINEDTABLEFIELDSEMANTIC sy-vline      INTO ld_text SEPARATED BY SPACE.

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