ABAP Select data from SAP table ISTRACKTOOLUSAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISTRACKTOOLUSAGE
*  INTO TABLE @DATA(IT_ISTRACKTOOLUSAGE2).
*--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_ISTRACKTOOLUSAGE INDEX 1 INTO DATA(WA_ISTRACKTOOLUSAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISTRACKTOOLUSAGE>-KEY = 1.
<ISTRACKTOOLUSAGE>-PARENT_KEY = 1.
<ISTRACKTOOLUSAGE>-ROOT_KEY = 1.
<ISTRACKTOOLUSAGE>-EQUIPMENT = 1.
<ISTRACKTOOLUSAGE>-MAINTOBJECTINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISTRACKTOOLUSAGE-EQUIPMENTCATEGORY, sy-vline,
  WA_ISTRACKTOOLUSAGE-CREATEDBYUSER, sy-vline,
  WA_ISTRACKTOOLUSAGE-SERIALNUMBER, sy-vline,
  WA_ISTRACKTOOLUSAGE-MATERIAL, sy-vline,
  WA_ISTRACKTOOLUSAGE-UNIQUEITEMIDENTIFIER, sy-vline,
  WA_ISTRACKTOOLUSAGE-EQUIPMENTCLAIMTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISTRACKTOOLUSAGE 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_ISTRACKTOOLUSAGE 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_ISTRACKTOOLUSAGE INTO WA_ISTRACKTOOLUSAGE.


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

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISTRACKTOOLUSAGE-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTRACKTOOLUSAGE-SERIALNUMBER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field OPACTYNTWKELEMENTEXTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISTRACKTOOLUSAGE-OPACTYNTWKELEMENTEXTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTRACKTOOLUSAGE-OPACTYNTWKELEMENTEXTERNALID.
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_ISTRACKTOOLUSAGE_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
EQUIPMENT TYPE STRING,
MAINTOBJECTINTERNALID TYPE STRING,
EQUIPMENTCATEGORY TYPE STRING,
CREATEDBYUSER TYPE STRING,
SERIALNUMBER TYPE STRING,
MATERIAL TYPE STRING,
UNIQUEITEMIDENTIFIER TYPE STRING,
EQUIPMENTCLAIMTYPE TYPE STRING,
PLANT TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
EQUIPLASTCLAIMDATETIME TYPE STRING,
EQUIPLASTUNCLAIMDATETIME TYPE STRING,
EQUIPMENTHISTORYDOCUMENT TYPE STRING,
OPERATIONACTIVITYNAME TYPE STRING,
OPACTYNTWKELEMENTEXTERNALID TYPE STRING,
EQUIPCLAIMDURATIONINSECONDS TYPE STRING,
EQUIPMENTISCLAIMED TYPE STRING,
EQUIPMENTISONHOLD TYPE STRING,
STATUSCODE TYPE STRING,
STATUSNAME TYPE STRING,
EQUIPMENTCLAIMISAVAILABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISTRACKTOOLUSAGE_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_ISTRACKTOOLUSAGE_STR-KEY sy-vline 
WA_ISTRACKTOOLUSAGE_STR-PARENT_KEY sy-vline 
WA_ISTRACKTOOLUSAGE_STR-ROOT_KEY sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENT sy-vline 
WA_ISTRACKTOOLUSAGE_STR-MAINTOBJECTINTERNALID sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENTCATEGORY sy-vline 
WA_ISTRACKTOOLUSAGE_STR-CREATEDBYUSER sy-vline 
WA_ISTRACKTOOLUSAGE_STR-SERIALNUMBER sy-vline 
WA_ISTRACKTOOLUSAGE_STR-MATERIAL sy-vline 
WA_ISTRACKTOOLUSAGE_STR-UNIQUEITEMIDENTIFIER sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENTCLAIMTYPE sy-vline 
WA_ISTRACKTOOLUSAGE_STR-PLANT sy-vline 
WA_ISTRACKTOOLUSAGE_STR-MAINTENANCEPLANT sy-vline 
WA_ISTRACKTOOLUSAGE_STR-STORAGELOCATION sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPLASTCLAIMDATETIME sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPLASTUNCLAIMDATETIME sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENTHISTORYDOCUMENT sy-vline 
WA_ISTRACKTOOLUSAGE_STR-OPERATIONACTIVITYNAME sy-vline 
WA_ISTRACKTOOLUSAGE_STR-OPACTYNTWKELEMENTEXTERNALID sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPCLAIMDURATIONINSECONDS sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENTISCLAIMED sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENTISONHOLD sy-vline 
WA_ISTRACKTOOLUSAGE_STR-STATUSCODE sy-vline 
WA_ISTRACKTOOLUSAGE_STR-STATUSNAME sy-vline 
WA_ISTRACKTOOLUSAGE_STR-EQUIPMENTCLAIMISAVAILABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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