ABAP Select data from SAP table LSO_RHWSTRACKING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSO_RHWSTRACKING
*  INTO TABLE @DATA(IT_LSO_RHWSTRACKING2).
*--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_LSO_RHWSTRACKING INDEX 1 INTO DATA(WA_LSO_RHWSTRACKING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSO_RHWSTRACKING>-PICK = 1.
<LSO_RHWSTRACKING>-PATYP = 1.
<LSO_RHWSTRACKING>-PARID = 1.
<LSO_RHWSTRACKING>-PARSH = 1.
<LSO_RHWSTRACKING>-PARTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSO_RHWSTRACKING-OGAID, sy-vline,
  WA_LSO_RHWSTRACKING-OGSRK, sy-vline,
  WA_LSO_RHWSTRACKING-OGTXT, sy-vline,
  WA_LSO_RHWSTRACKING-EVETY, sy-vline,
  WA_LSO_RHWSTRACKING-EVEID, sy-vline,
  WA_LSO_RHWSTRACKING-EVSHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSO_RHWSTRACKING 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_LSO_RHWSTRACKING 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_LSO_RHWSTRACKING INTO WA_LSO_RHWSTRACKING.


*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 ISOLA, internal->external for field EVLAN
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_LSO_RHWSTRACKING-EVLAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSO_RHWSTRACKING-EVLAN.
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_LSO_RHWSTRACKING_STR, 
PICK TYPE STRING,
PATYP TYPE STRING,
PARID TYPE STRING,
PARSH TYPE STRING,
PARTX TYPE STRING,
OGAID TYPE STRING,
OGSRK TYPE STRING,
OGTXT TYPE STRING,
EVETY TYPE STRING,
EVEID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
BUDAT TYPE STRING,
EVLAN TYPE STRING,
TFORM TYPE STRING,
TXTSHORT TYPE STRING,
TXTSING TYPE STRING,
LEARN_STATUS TYPE STRING,
FIRST_ACCESSDATE TYPE STRING,
FIRST_ACCESSTIME TYPE STRING,
LAST_ACCESSDATE TYPE STRING,
LAST_ACCESSTIME TYPE STRING,
LEARN_DURATION TYPE STRING,
LEARN_PROGRESS TYPE STRING,
LEARN_RESULT TYPE STRING,
SCORE_REACHED TYPE STRING,
SCORE_MINIMUM TYPE STRING,
SCORE_MAXIMUM TYPE STRING,
ACCESS_COUNTER TYPE STRING,
STATUS_ACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSO_RHWSTRACKING_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_LSO_RHWSTRACKING_STR-PICK sy-vline 
WA_LSO_RHWSTRACKING_STR-PATYP sy-vline 
WA_LSO_RHWSTRACKING_STR-PARID sy-vline 
WA_LSO_RHWSTRACKING_STR-PARSH sy-vline 
WA_LSO_RHWSTRACKING_STR-PARTX sy-vline 
WA_LSO_RHWSTRACKING_STR-OGAID sy-vline 
WA_LSO_RHWSTRACKING_STR-OGSRK sy-vline 
WA_LSO_RHWSTRACKING_STR-OGTXT sy-vline 
WA_LSO_RHWSTRACKING_STR-EVETY sy-vline 
WA_LSO_RHWSTRACKING_STR-EVEID sy-vline 
WA_LSO_RHWSTRACKING_STR-EVSHT sy-vline 
WA_LSO_RHWSTRACKING_STR-EVSTX sy-vline 
WA_LSO_RHWSTRACKING_STR-EVBEG sy-vline 
WA_LSO_RHWSTRACKING_STR-EVEND sy-vline 
WA_LSO_RHWSTRACKING_STR-BUDAT sy-vline 
WA_LSO_RHWSTRACKING_STR-EVLAN sy-vline 
WA_LSO_RHWSTRACKING_STR-TFORM sy-vline 
WA_LSO_RHWSTRACKING_STR-TXTSHORT sy-vline 
WA_LSO_RHWSTRACKING_STR-TXTSING sy-vline 
WA_LSO_RHWSTRACKING_STR-LEARN_STATUS sy-vline 
WA_LSO_RHWSTRACKING_STR-FIRST_ACCESSDATE sy-vline 
WA_LSO_RHWSTRACKING_STR-FIRST_ACCESSTIME sy-vline 
WA_LSO_RHWSTRACKING_STR-LAST_ACCESSDATE sy-vline 
WA_LSO_RHWSTRACKING_STR-LAST_ACCESSTIME sy-vline 
WA_LSO_RHWSTRACKING_STR-LEARN_DURATION sy-vline 
WA_LSO_RHWSTRACKING_STR-LEARN_PROGRESS sy-vline 
WA_LSO_RHWSTRACKING_STR-LEARN_RESULT sy-vline 
WA_LSO_RHWSTRACKING_STR-SCORE_REACHED sy-vline 
WA_LSO_RHWSTRACKING_STR-SCORE_MINIMUM sy-vline 
WA_LSO_RHWSTRACKING_STR-SCORE_MAXIMUM sy-vline 
WA_LSO_RHWSTRACKING_STR-ACCESS_COUNTER sy-vline 
WA_LSO_RHWSTRACKING_STR-STATUS_ACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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