ABAP Select data from SAP table HRPE_APPR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRPE_APPR 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_APPR. 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_APPR 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_APPR TYPE STANDARD TABLE OF HRPE_APPR,
      WA_HRPE_APPR TYPE HRPE_APPR,
      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_APPR> TYPE HRPE_APPR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPE_APPR
*  INTO TABLE @DATA(IT_HRPE_APPR2).
*--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_APPR INDEX 1 INTO DATA(WA_HRPE_APPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPE_APPR>-TTYPE = 1.
<HRPE_APPR>-TBJID = 1.
<HRPE_APPR>-SBEGD = 1.
<HRPE_APPR>-SENDD = 1.
<HRPE_APPR>-VBEGD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPE_APPR-VENDD, sy-vline,
  WA_HRPE_APPR-ISTAT, sy-vline,
  WA_HRPE_APPR-NOTE, sy-vline,
  WA_HRPE_APPR-TSHORT, sy-vline,
  WA_HRPE_APPR-TTEXT, sy-vline,
  WA_HRPE_APPR-RANK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPE_APPR 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_APPR 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_APPR INTO WA_HRPE_APPR.


*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_APPR_STR, 
TTYPE TYPE STRING,
TBJID TYPE STRING,
SBEGD TYPE STRING,
SENDD TYPE STRING,
VBEGD TYPE STRING,
VENDD TYPE STRING,
ISTAT TYPE STRING,
NOTE TYPE STRING,
TSHORT TYPE STRING,
TTEXT TYPE STRING,
RANK TYPE STRING,
EVAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPE_APPR_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_APPR_STR-TTYPE sy-vline 
WA_HRPE_APPR_STR-TBJID sy-vline 
WA_HRPE_APPR_STR-SBEGD sy-vline 
WA_HRPE_APPR_STR-SENDD sy-vline 
WA_HRPE_APPR_STR-VBEGD sy-vline 
WA_HRPE_APPR_STR-VENDD sy-vline 
WA_HRPE_APPR_STR-ISTAT sy-vline 
WA_HRPE_APPR_STR-NOTE sy-vline 
WA_HRPE_APPR_STR-TSHORT sy-vline 
WA_HRPE_APPR_STR-TTEXT sy-vline 
WA_HRPE_APPR_STR-RANK sy-vline 
WA_HRPE_APPR_STR-EVAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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