ABAP Select data from SAP table HRPAD_S_P2APL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRPAD_S_P2APL 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 HRPAD_S_P2APL. 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 HRPAD_S_P2APL 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_HRPAD_S_P2APL TYPE STANDARD TABLE OF HRPAD_S_P2APL,
      WA_HRPAD_S_P2APL TYPE HRPAD_S_P2APL,
      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: <HRPAD_S_P2APL> TYPE HRPAD_S_P2APL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRPAD_S_P2APL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRPAD_S_P2APL
  INTO TABLE IT_HRPAD_S_P2APL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAD_S_P2APL
*  INTO TABLE @DATA(IT_HRPAD_S_P2APL2).
*--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_HRPAD_S_P2APL INDEX 1 INTO DATA(WA_HRPAD_S_P2APL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRPAD_S_P2APL ASSIGNING <HRPAD_S_P2APL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAD_S_P2APL>-OBJECT_KEY = 1.
<HRPAD_S_P2APL>-TRFGR = 1.
<HRPAD_S_P2APL>-TRFST = 1.
<HRPAD_S_P2APL>-PRAKN = 1.
<HRPAD_S_P2APL>-PRAKZ = 1.

ENDLOOP.

LOOP AT IT_HRPAD_S_P2APL INTO WA_HRPAD_S_P2APL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAD_S_P2APL-OTYPE, sy-vline,
  WA_HRPAD_S_P2APL-PLANS, sy-vline,
  WA_HRPAD_S_P2APL-AUFKZ, sy-vline,
  WA_HRPAD_S_P2APL-BWGRL, sy-vline,
  WA_HRPAD_S_P2APL-WAERS, sy-vline,
  WA_HRPAD_S_P2APL-WTART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAD_S_P2APL 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_HRPAD_S_P2APL 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_HRPAD_S_P2APL INTO WA_HRPAD_S_P2APL.


*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_HRPAD_S_P2APL_STR, 
OBJECT_KEY TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
AUFKZ TYPE STRING,
BWGRL TYPE STRING,
WAERS TYPE STRING,
WTART TYPE STRING,
PTEXT TYPE STRING,
PLSTX TYPE STRING,
ARNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAD_S_P2APL_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_HRPAD_S_P2APL_STR-OBJECT_KEY sy-vline 
WA_HRPAD_S_P2APL_STR-TRFGR sy-vline 
WA_HRPAD_S_P2APL_STR-TRFST sy-vline 
WA_HRPAD_S_P2APL_STR-PRAKN sy-vline 
WA_HRPAD_S_P2APL_STR-PRAKZ sy-vline 
WA_HRPAD_S_P2APL_STR-OTYPE sy-vline 
WA_HRPAD_S_P2APL_STR-PLANS sy-vline 
WA_HRPAD_S_P2APL_STR-AUFKZ sy-vline 
WA_HRPAD_S_P2APL_STR-BWGRL sy-vline 
WA_HRPAD_S_P2APL_STR-WAERS sy-vline 
WA_HRPAD_S_P2APL_STR-WTART sy-vline 
WA_HRPAD_S_P2APL_STR-PTEXT sy-vline 
WA_HRPAD_S_P2APL_STR-PLSTX sy-vline 
WA_HRPAD_S_P2APL_STR-ARNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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