ABAP Select data from SAP table ATR_S_WORKLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATR_S_WORKLIST
*  INTO TABLE @DATA(IT_ATR_S_WORKLIST2).
*--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_ATR_S_WORKLIST INDEX 1 INTO DATA(WA_ATR_S_WORKLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATR_S_WORKLIST>-TRIPNUMBER = 1.
<ATR_S_WORKLIST>-PURPOSE = 1.
<ATR_S_WORKLIST>-DEPARTURE = 1.
<ATR_S_WORKLIST>-ARRIVAL = 1.
<ATR_S_WORKLIST>-ESTIMATEDCOST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATR_S_WORKLIST-CURRENCY, sy-vline,
  WA_ATR_S_WORKLIST-LOCATION, sy-vline,
  WA_ATR_S_WORKLIST-COUNTRYCODE, sy-vline,
  WA_ATR_S_WORKLIST-COUNTRYNAME, sy-vline,
  WA_ATR_S_WORKLIST-REQUESTERFIRSTNAME, sy-vline,
  WA_ATR_S_WORKLIST-NOTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATR_S_WORKLIST 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_ATR_S_WORKLIST 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_ATR_S_WORKLIST INTO WA_ATR_S_WORKLIST.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ATR_S_WORKLIST_STR, 
TRIPNUMBER TYPE STRING,
PURPOSE TYPE STRING,
DEPARTURE TYPE STRING,
ARRIVAL TYPE STRING,
ESTIMATEDCOST TYPE STRING,
CURRENCY TYPE STRING,
LOCATION TYPE STRING,
COUNTRYCODE TYPE STRING,
COUNTRYNAME TYPE STRING,
REQUESTERFIRSTNAME TYPE STRING,
NOTE TYPE STRING,
STATUS TYPE STRING,
REQUESTERLASTNAME TYPE STRING,
WORKITEMID TYPE STRING,
LASTCHANGEDATE TYPE STRING,
PERSONALNUMBER TYPE STRING,
TRIPACTIVITYNAME TYPE STRING,
COMMENTARY TYPE STRING,
REASON_LABEL TYPE STRING,
GENERALINFO_LABEL TYPE STRING,
ESTIMATED_COST_LABEL TYPE STRING,
COSTDIST_LABEL TYPE STRING,
DUMMY_WORKLIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATR_S_WORKLIST_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_ATR_S_WORKLIST_STR-TRIPNUMBER sy-vline 
WA_ATR_S_WORKLIST_STR-PURPOSE sy-vline 
WA_ATR_S_WORKLIST_STR-DEPARTURE sy-vline 
WA_ATR_S_WORKLIST_STR-ARRIVAL sy-vline 
WA_ATR_S_WORKLIST_STR-ESTIMATEDCOST sy-vline 
WA_ATR_S_WORKLIST_STR-CURRENCY sy-vline 
WA_ATR_S_WORKLIST_STR-LOCATION sy-vline 
WA_ATR_S_WORKLIST_STR-COUNTRYCODE sy-vline 
WA_ATR_S_WORKLIST_STR-COUNTRYNAME sy-vline 
WA_ATR_S_WORKLIST_STR-REQUESTERFIRSTNAME sy-vline 
WA_ATR_S_WORKLIST_STR-NOTE sy-vline 
WA_ATR_S_WORKLIST_STR-STATUS sy-vline 
WA_ATR_S_WORKLIST_STR-REQUESTERLASTNAME sy-vline 
WA_ATR_S_WORKLIST_STR-WORKITEMID sy-vline 
WA_ATR_S_WORKLIST_STR-LASTCHANGEDATE sy-vline 
WA_ATR_S_WORKLIST_STR-PERSONALNUMBER sy-vline 
WA_ATR_S_WORKLIST_STR-TRIPACTIVITYNAME sy-vline 
WA_ATR_S_WORKLIST_STR-COMMENTARY sy-vline 
WA_ATR_S_WORKLIST_STR-REASON_LABEL sy-vline 
WA_ATR_S_WORKLIST_STR-GENERALINFO_LABEL sy-vline 
WA_ATR_S_WORKLIST_STR-ESTIMATED_COST_LABEL sy-vline 
WA_ATR_S_WORKLIST_STR-COSTDIST_LABEL sy-vline 
WA_ATR_S_WORKLIST_STR-DUMMY_WORKLIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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