ABAP Select data from SAP table HRWPC_S_OBJREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRWPC_S_OBJREL
*  INTO TABLE @DATA(IT_HRWPC_S_OBJREL2).
*--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_HRWPC_S_OBJREL INDEX 1 INTO DATA(WA_HRWPC_S_OBJREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRWPC_S_OBJREL>-PLVAR = 1.
<HRWPC_S_OBJREL>-OTYPE = 1.
<HRWPC_S_OBJREL>-OBJID = 1.
<HRWPC_S_OBJREL>-BEGDA = 1.
<HRWPC_S_OBJREL>-ENDDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRWPC_S_OBJREL-ISTAT, sy-vline,
  WA_HRWPC_S_OBJREL-HISTO, sy-vline,
  WA_HRWPC_S_OBJREL-SHORT, sy-vline,
  WA_HRWPC_S_OBJREL-STEXT, sy-vline,
  WA_HRWPC_S_OBJREL-REALO, sy-vline,
  WA_HRWPC_S_OBJREL-VOTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRWPC_S_OBJREL 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_HRWPC_S_OBJREL 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_HRWPC_S_OBJREL INTO WA_HRWPC_S_OBJREL.


*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_HRWPC_S_OBJREL_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ISTAT TYPE STRING,
HISTO TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
REALO TYPE STRING,
VOTYPE TYPE STRING,
VOBJID TYPE STRING,
VBEGDA TYPE STRING,
VENDDA TYPE STRING,
VPROZT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRWPC_S_OBJREL_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_HRWPC_S_OBJREL_STR-PLVAR sy-vline 
WA_HRWPC_S_OBJREL_STR-OTYPE sy-vline 
WA_HRWPC_S_OBJREL_STR-OBJID sy-vline 
WA_HRWPC_S_OBJREL_STR-BEGDA sy-vline 
WA_HRWPC_S_OBJREL_STR-ENDDA sy-vline 
WA_HRWPC_S_OBJREL_STR-ISTAT sy-vline 
WA_HRWPC_S_OBJREL_STR-HISTO sy-vline 
WA_HRWPC_S_OBJREL_STR-SHORT sy-vline 
WA_HRWPC_S_OBJREL_STR-STEXT sy-vline 
WA_HRWPC_S_OBJREL_STR-REALO sy-vline 
WA_HRWPC_S_OBJREL_STR-VOTYPE sy-vline 
WA_HRWPC_S_OBJREL_STR-VOBJID sy-vline 
WA_HRWPC_S_OBJREL_STR-VBEGDA sy-vline 
WA_HRWPC_S_OBJREL_STR-VENDDA sy-vline 
WA_HRWPC_S_OBJREL_STR-VPROZT sy-vline      INTO ld_text SEPARATED BY SPACE.

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