ABAP Select data from SAP table E1HR_DS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_DS 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 E1HR_DS. 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 E1HR_DS 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_E1HR_DS TYPE STANDARD TABLE OF E1HR_DS,
      WA_E1HR_DS TYPE E1HR_DS,
      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: <E1HR_DS> TYPE E1HR_DS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_DS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_DS
  INTO TABLE IT_E1HR_DS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_DS
*  INTO TABLE @DATA(IT_E1HR_DS2).
*--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_E1HR_DS INDEX 1 INTO DATA(WA_E1HR_DS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_DS ASSIGNING <E1HR_DS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_DS>-BEGDA = 1.
<E1HR_DS>-ENDDA = 1.
<E1HR_DS>-KVKZ1 = 1.
<E1HR_DS>-RVKZ1 = 1.
<E1HR_DS>-AVKZ1 = 1.

ENDLOOP.

LOOP AT IT_E1HR_DS INTO WA_E1HR_DS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_DS-RVNUM, sy-vline,
  WA_E1HR_DS-KVSFR, sy-vline,
  WA_E1HR_DS-KVGST, sy-vline,
  WA_E1HR_DS-KVBKL, sy-vline,
  WA_E1HR_DS-KVFBT, sy-vline,
  WA_E1HR_DS-ZUSKA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_DS 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_E1HR_DS 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_E1HR_DS INTO WA_E1HR_DS.


*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_E1HR_DS_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
KVKZ1 TYPE STRING,
RVKZ1 TYPE STRING,
AVKZ1 TYPE STRING,
RVNUM TYPE STRING,
KVSFR TYPE STRING,
KVGST TYPE STRING,
KVBKL TYPE STRING,
KVFBT TYPE STRING,
ZUSKA TYPE STRING,
SONKV TYPE STRING,
SONRV TYPE STRING,
SONAV TYPE STRING,
SELKV TYPE STRING,
SELRV TYPE STRING,
KVBFG TYPE STRING,
RVBFG TYPE STRING,
AVBFG TYPE STRING,
MAXKV TYPE STRING,
MITNR TYPE STRING,
KVBAT TYPE STRING,
RVBAT TYPE STRING,
AVBAT TYPE STRING,
SVA01 TYPE STRING,
SVA02 TYPE STRING,
SVA03 TYPE STRING,
SVA04 TYPE STRING,
SVA05 TYPE STRING,
SVA06 TYPE STRING,
SVA07 TYPE STRING,
SVA08 TYPE STRING,
PVKZ1 TYPE STRING,
PVBKL TYPE STRING,
PVFBT TYPE STRING,
SONPV TYPE STRING,
SELPV TYPE STRING,
PVBFG TYPE STRING,
PVBAT TYPE STRING,
MAXPV TYPE STRING,
CNTR1 TYPE STRING,
JUPER TYPE STRING,
AUVOR TYPE STRING,
AUMIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_DS_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_E1HR_DS_STR-BEGDA sy-vline 
WA_E1HR_DS_STR-ENDDA sy-vline 
WA_E1HR_DS_STR-KVKZ1 sy-vline 
WA_E1HR_DS_STR-RVKZ1 sy-vline 
WA_E1HR_DS_STR-AVKZ1 sy-vline 
WA_E1HR_DS_STR-RVNUM sy-vline 
WA_E1HR_DS_STR-KVSFR sy-vline 
WA_E1HR_DS_STR-KVGST sy-vline 
WA_E1HR_DS_STR-KVBKL sy-vline 
WA_E1HR_DS_STR-KVFBT sy-vline 
WA_E1HR_DS_STR-ZUSKA sy-vline 
WA_E1HR_DS_STR-SONKV sy-vline 
WA_E1HR_DS_STR-SONRV sy-vline 
WA_E1HR_DS_STR-SONAV sy-vline 
WA_E1HR_DS_STR-SELKV sy-vline 
WA_E1HR_DS_STR-SELRV sy-vline 
WA_E1HR_DS_STR-KVBFG sy-vline 
WA_E1HR_DS_STR-RVBFG sy-vline 
WA_E1HR_DS_STR-AVBFG sy-vline 
WA_E1HR_DS_STR-MAXKV sy-vline 
WA_E1HR_DS_STR-MITNR sy-vline 
WA_E1HR_DS_STR-KVBAT sy-vline 
WA_E1HR_DS_STR-RVBAT sy-vline 
WA_E1HR_DS_STR-AVBAT sy-vline 
WA_E1HR_DS_STR-SVA01 sy-vline 
WA_E1HR_DS_STR-SVA02 sy-vline 
WA_E1HR_DS_STR-SVA03 sy-vline 
WA_E1HR_DS_STR-SVA04 sy-vline 
WA_E1HR_DS_STR-SVA05 sy-vline 
WA_E1HR_DS_STR-SVA06 sy-vline 
WA_E1HR_DS_STR-SVA07 sy-vline 
WA_E1HR_DS_STR-SVA08 sy-vline 
WA_E1HR_DS_STR-PVKZ1 sy-vline 
WA_E1HR_DS_STR-PVBKL sy-vline 
WA_E1HR_DS_STR-PVFBT sy-vline 
WA_E1HR_DS_STR-SONPV sy-vline 
WA_E1HR_DS_STR-SELPV sy-vline 
WA_E1HR_DS_STR-PVBFG sy-vline 
WA_E1HR_DS_STR-PVBAT sy-vline 
WA_E1HR_DS_STR-MAXPV sy-vline 
WA_E1HR_DS_STR-CNTR1 sy-vline 
WA_E1HR_DS_STR-JUPER sy-vline 
WA_E1HR_DS_STR-AUVOR sy-vline 
WA_E1HR_DS_STR-AUMIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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