ABAP Select data from SAP table INWACTBYINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INWACTBYINT
*  INTO TABLE @DATA(IT_INWACTBYINT2).
*--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_INWACTBYINT INDEX 1 INTO DATA(WA_INWACTBYINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INWACTBYINT>-MANDT = 1.
<INWACTBYINT>-PROJECTNETWORKINTERNALID = 1.
<INWACTBYINT>-NETWORKACTIVITYINTERNALID = 1.
<INWACTBYINT>-NETWORKACTIVITY = 1.
<INWACTBYINT>-NETWORKACTIVITYDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INWACTBYINT-SUPERIORNTWKACTIVITYINTERNALID, sy-vline,
  WA_INWACTBYINT-WBSELEMENTINTERNALID, sy-vline,
  WA_INWACTBYINT-SUPPLIER, sy-vline,
  WA_INWACTBYINT-NETWORKACTIVITYOBJECT, sy-vline,
  WA_INWACTBYINT-PLANT, sy-vline,
  WA_INWACTBYINT-WORKCENTERINTERNALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INWACTBYINT 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_INWACTBYINT 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_INWACTBYINT INTO WA_INWACTBYINT.


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

*Conversion exit ALPHA, internal->external for field COSTELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_INWACTBYINT-COSTELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INWACTBYINT-COSTELEMENT.
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_INWACTBYINT_STR, 
MANDT TYPE STRING,
PROJECTNETWORKINTERNALID TYPE STRING,
NETWORKACTIVITYINTERNALID TYPE STRING,
NETWORKACTIVITY TYPE STRING,
NETWORKACTIVITYDESCRIPTION TYPE STRING,
SUPERIORNTWKACTIVITYINTERNALID TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
SUPPLIER TYPE STRING,
NETWORKACTIVITYOBJECT TYPE STRING,
PLANT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
COSTCTRACTIVITYTYPE TYPE STRING,
NETWORKACTIVITYCONTROLPROFILE TYPE STRING,
OPERATIONIMPORTANCE TYPE STRING,
EXTERNALPROCESSINGPRICE TYPE STRING,
COSTELEMENT TYPE STRING,
NETWORKACTIVITYCURRENCY TYPE STRING,
ISMARKEDFORDELETION TYPE STRING,
CONTROLLINGAREA TYPE STRING,
NETWORKACTIVITYPRIORITY TYPE STRING,
NETWORKACTIVITYOBJECTCURRENCY TYPE STRING,
COMPANYCODE TYPE STRING,
FACTORYCALENDAR TYPE STRING,
WORKCENTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INWACTBYINT_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_INWACTBYINT_STR-MANDT sy-vline 
WA_INWACTBYINT_STR-PROJECTNETWORKINTERNALID sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYINTERNALID sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITY sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYDESCRIPTION sy-vline 
WA_INWACTBYINT_STR-SUPERIORNTWKACTIVITYINTERNALID sy-vline 
WA_INWACTBYINT_STR-WBSELEMENTINTERNALID sy-vline 
WA_INWACTBYINT_STR-SUPPLIER sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYOBJECT sy-vline 
WA_INWACTBYINT_STR-PLANT sy-vline 
WA_INWACTBYINT_STR-WORKCENTERINTERNALID sy-vline 
WA_INWACTBYINT_STR-COSTCTRACTIVITYTYPE sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYCONTROLPROFILE sy-vline 
WA_INWACTBYINT_STR-OPERATIONIMPORTANCE sy-vline 
WA_INWACTBYINT_STR-EXTERNALPROCESSINGPRICE sy-vline 
WA_INWACTBYINT_STR-COSTELEMENT sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYCURRENCY sy-vline 
WA_INWACTBYINT_STR-ISMARKEDFORDELETION sy-vline 
WA_INWACTBYINT_STR-CONTROLLINGAREA sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYPRIORITY sy-vline 
WA_INWACTBYINT_STR-NETWORKACTIVITYOBJECTCURRENCY sy-vline 
WA_INWACTBYINT_STR-COMPANYCODE sy-vline 
WA_INWACTBYINT_STR-FACTORYCALENDAR sy-vline 
WA_INWACTBYINT_STR-WORKCENTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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