ABAP Select data from SAP table HRHAP_P_E into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRHAP_P_E
*  INTO TABLE @DATA(IT_HRHAP_P_E2).
*--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_HRHAP_P_E INDEX 1 INTO DATA(WA_HRHAP_P_E2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRHAP_P_E>-MANDT = 1.
<HRHAP_P_E>-PLAN_VERSION = 1.
<HRHAP_P_E>-APPRAISAL_ID = 1.
<HRHAP_P_E>-ROW_IID = 1.
<HRHAP_P_E>-COLUMN_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRHAP_P_E-SIGN, sy-vline,
  WA_HRHAP_P_E-SELECTION_OPTION, sy-vline,
  WA_HRHAP_P_E-LOW_NUM, sy-vline,
  WA_HRHAP_P_E-LOW_NNV, sy-vline,
  WA_HRHAP_P_E-LOW_NO_VALUE, sy-vline,
  WA_HRHAP_P_E-HIGH_NUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRHAP_P_E 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_HRHAP_P_E 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_HRHAP_P_E INTO WA_HRHAP_P_E.


*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_HRHAP_P_E_STR, 
MANDT TYPE STRING,
PLAN_VERSION TYPE STRING,
APPRAISAL_ID TYPE STRING,
ROW_IID TYPE STRING,
COLUMN_ID TYPE STRING,
SIGN TYPE STRING,
SELECTION_OPTION TYPE STRING,
LOW_NUM TYPE STRING,
LOW_NNV TYPE STRING,
LOW_NO_VALUE TYPE STRING,
HIGH_NUM TYPE STRING,
HIGH_NNV TYPE STRING,
HIGH_NO_VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRHAP_P_E_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_HRHAP_P_E_STR-MANDT sy-vline 
WA_HRHAP_P_E_STR-PLAN_VERSION sy-vline 
WA_HRHAP_P_E_STR-APPRAISAL_ID sy-vline 
WA_HRHAP_P_E_STR-ROW_IID sy-vline 
WA_HRHAP_P_E_STR-COLUMN_ID sy-vline 
WA_HRHAP_P_E_STR-SIGN sy-vline 
WA_HRHAP_P_E_STR-SELECTION_OPTION sy-vline 
WA_HRHAP_P_E_STR-LOW_NUM sy-vline 
WA_HRHAP_P_E_STR-LOW_NNV sy-vline 
WA_HRHAP_P_E_STR-LOW_NO_VALUE sy-vline 
WA_HRHAP_P_E_STR-HIGH_NUM sy-vline 
WA_HRHAP_P_E_STR-HIGH_NNV sy-vline 
WA_HRHAP_P_E_STR-HIGH_NO_VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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