ABAP Select data from SAP table HRPE_APP_PARTIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPE_APP_PARTIC
*  INTO TABLE @DATA(IT_HRPE_APP_PARTIC2).
*--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_HRPE_APP_PARTIC INDEX 1 INTO DATA(WA_HRPE_APP_PARTIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPE_APP_PARTIC>-PLVAR = 1.
<HRPE_APP_PARTIC>-OTYPE = 1.
<HRPE_APP_PARTIC>-OBJID = 1.
<HRPE_APP_PARTIC>-OTYPE1 = 1.
<HRPE_APP_PARTIC>-OBJID1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPE_APP_PARTIC-OTEXT1, sy-vline,
  WA_HRPE_APP_PARTIC-SHORT1, sy-vline,
  WA_HRPE_APP_PARTIC-STEXT1, sy-vline,
  WA_HRPE_APP_PARTIC-OTYPE2, sy-vline,
  WA_HRPE_APP_PARTIC-OBJID2, sy-vline,
  WA_HRPE_APP_PARTIC-OTEXT2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPE_APP_PARTIC 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_HRPE_APP_PARTIC 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_HRPE_APP_PARTIC INTO WA_HRPE_APP_PARTIC.


*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_HRPE_APP_PARTIC_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
OTYPE1 TYPE STRING,
OBJID1 TYPE STRING,
OTEXT1 TYPE STRING,
SHORT1 TYPE STRING,
STEXT1 TYPE STRING,
OTYPE2 TYPE STRING,
OBJID2 TYPE STRING,
OTEXT2 TYPE STRING,
SHORT2 TYPE STRING,
STEXT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPE_APP_PARTIC_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_HRPE_APP_PARTIC_STR-PLVAR sy-vline 
WA_HRPE_APP_PARTIC_STR-OTYPE sy-vline 
WA_HRPE_APP_PARTIC_STR-OBJID sy-vline 
WA_HRPE_APP_PARTIC_STR-OTYPE1 sy-vline 
WA_HRPE_APP_PARTIC_STR-OBJID1 sy-vline 
WA_HRPE_APP_PARTIC_STR-OTEXT1 sy-vline 
WA_HRPE_APP_PARTIC_STR-SHORT1 sy-vline 
WA_HRPE_APP_PARTIC_STR-STEXT1 sy-vline 
WA_HRPE_APP_PARTIC_STR-OTYPE2 sy-vline 
WA_HRPE_APP_PARTIC_STR-OBJID2 sy-vline 
WA_HRPE_APP_PARTIC_STR-OTEXT2 sy-vline 
WA_HRPE_APP_PARTIC_STR-SHORT2 sy-vline 
WA_HRPE_APP_PARTIC_STR-STEXT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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