ABAP Select data from SAP table HRWB_CANDIDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRWB_CANDIDATE
*  INTO TABLE @DATA(IT_HRWB_CANDIDATE2).
*--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_HRWB_CANDIDATE INDEX 1 INTO DATA(WA_HRWB_CANDIDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRWB_CANDIDATE>-EXTERNALCANDIDATEID = 1.
<HRWB_CANDIDATE>-REQUISITIONID = 1.
<HRWB_CANDIDATE>-FORMOFADDRESS = 1.
<HRWB_CANDIDATE>-FIRSTNAME = 1.
<HRWB_CANDIDATE>-LASTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRWB_CANDIDATE-MIDDLENAME, sy-vline,
  WA_HRWB_CANDIDATE-DATEOFBIRTH, sy-vline,
  WA_HRWB_CANDIDATE-SSN, sy-vline,
  WA_HRWB_CANDIDATE-RECRUITMENTINSTRUMENT, sy-vline,
  WA_HRWB_CANDIDATE-STREET, sy-vline,
  WA_HRWB_CANDIDATE-CITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRWB_CANDIDATE 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_HRWB_CANDIDATE 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_HRWB_CANDIDATE INTO WA_HRWB_CANDIDATE.


*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 SXIDN, internal->external for field EMAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_HRWB_CANDIDATE-EMAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRWB_CANDIDATE-EMAIL.
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_HRWB_CANDIDATE_STR, 
EXTERNALCANDIDATEID TYPE STRING,
REQUISITIONID TYPE STRING,
FORMOFADDRESS TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
MIDDLENAME TYPE STRING,
DATEOFBIRTH TYPE STRING,
SSN TYPE STRING,
RECRUITMENTINSTRUMENT TYPE STRING,
STREET TYPE STRING,
CITY TYPE STRING,
STATE TYPE STRING,
ZIPCODE TYPE STRING,
COUNTRY TYPE STRING,
HOMEPHONE TYPE STRING,
EMAIL TYPE STRING,
RACE TYPE STRING,
GENDER TYPE STRING,
APPLICANTTYPE TYPE STRING,
EMPLOYEEID TYPE STRING,
STATUS TYPE STRING,
UPDATEDBY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRWB_CANDIDATE_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_HRWB_CANDIDATE_STR-EXTERNALCANDIDATEID sy-vline 
WA_HRWB_CANDIDATE_STR-REQUISITIONID sy-vline 
WA_HRWB_CANDIDATE_STR-FORMOFADDRESS sy-vline 
WA_HRWB_CANDIDATE_STR-FIRSTNAME sy-vline 
WA_HRWB_CANDIDATE_STR-LASTNAME sy-vline 
WA_HRWB_CANDIDATE_STR-MIDDLENAME sy-vline 
WA_HRWB_CANDIDATE_STR-DATEOFBIRTH sy-vline 
WA_HRWB_CANDIDATE_STR-SSN sy-vline 
WA_HRWB_CANDIDATE_STR-RECRUITMENTINSTRUMENT sy-vline 
WA_HRWB_CANDIDATE_STR-STREET sy-vline 
WA_HRWB_CANDIDATE_STR-CITY sy-vline 
WA_HRWB_CANDIDATE_STR-STATE sy-vline 
WA_HRWB_CANDIDATE_STR-ZIPCODE sy-vline 
WA_HRWB_CANDIDATE_STR-COUNTRY sy-vline 
WA_HRWB_CANDIDATE_STR-HOMEPHONE sy-vline 
WA_HRWB_CANDIDATE_STR-EMAIL sy-vline 
WA_HRWB_CANDIDATE_STR-RACE sy-vline 
WA_HRWB_CANDIDATE_STR-GENDER sy-vline 
WA_HRWB_CANDIDATE_STR-APPLICANTTYPE sy-vline 
WA_HRWB_CANDIDATE_STR-EMPLOYEEID sy-vline 
WA_HRWB_CANDIDATE_STR-STATUS sy-vline 
WA_HRWB_CANDIDATE_STR-UPDATEDBY sy-vline      INTO ld_text SEPARATED BY SPACE.

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