ABAP Select data from SAP table E1HR_DV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_DV 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_DV. 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_DV 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_DV TYPE STANDARD TABLE OF E1HR_DV,
      WA_E1HR_DV TYPE E1HR_DV,
      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_DV> TYPE E1HR_DV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_DV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_DV
  INTO TABLE IT_E1HR_DV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_DV
*  INTO TABLE @DATA(IT_E1HR_DV2).
*--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_DV INDEX 1 INTO DATA(WA_E1HR_DV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_DV ASSIGNING <E1HR_DV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_DV>-BEGDA = 1.
<E1HR_DV>-ENDDA = 1.
<E1HR_DV>-DUETA = 1.
<E1HR_DV>-DUTXT = 1.
<E1HR_DV>-STBRF = 1.

ENDLOOP.

LOOP AT IT_E1HR_DV INTO WA_E1HR_DV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_DV-AUSBG, sy-vline,
  WA_E1HR_DV-MFBTG, sy-vline,
  WA_E1HR_DV-REANT, sy-vline,
  WA_E1HR_DV-RATXT, sy-vline,
  WA_E1HR_DV-RANST, sy-vline,
  WA_E1HR_DV-DUVSP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_DV 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_DV 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_DV INTO WA_E1HR_DV.


*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_DV_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
DUETA TYPE STRING,
DUTXT TYPE STRING,
STBRF TYPE STRING,
AUSBG TYPE STRING,
MFBTG TYPE STRING,
REANT TYPE STRING,
RATXT TYPE STRING,
RANST TYPE STRING,
DUVSP TYPE STRING,
EGSVN TYPE STRING,
TTKKN TYPE STRING,
TKTXT TYPE STRING,
BESKN TYPE STRING,
DUVST TYPE STRING,
WLGRD TYPE STRING,
WGTXT TYPE STRING,
BPRAE TYPE STRING,
GRBWR TYPE STRING,
KZMAN TYPE STRING,
NBPBR TYPE STRING,
PRBEG TYPE STRING,
SONMD TYPE STRING,
KONMD TYPE STRING,
PGRD3 TYPE STRING,
PGKTXT TYPE STRING,
STKZU TYPE STRING,
STKZA TYPE STRING,
STKZK TYPE STRING,
KZSTA TYPE STRING,
TTSCH TYPE STRING,
TTBRF TYPE STRING,
ABSCH TYPE STRING,
ABBRF TYPE STRING,
ANUEB TYPE STRING,
VTFRM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_DV_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_DV_STR-BEGDA sy-vline 
WA_E1HR_DV_STR-ENDDA sy-vline 
WA_E1HR_DV_STR-DUETA sy-vline 
WA_E1HR_DV_STR-DUTXT sy-vline 
WA_E1HR_DV_STR-STBRF sy-vline 
WA_E1HR_DV_STR-AUSBG sy-vline 
WA_E1HR_DV_STR-MFBTG sy-vline 
WA_E1HR_DV_STR-REANT sy-vline 
WA_E1HR_DV_STR-RATXT sy-vline 
WA_E1HR_DV_STR-RANST sy-vline 
WA_E1HR_DV_STR-DUVSP sy-vline 
WA_E1HR_DV_STR-EGSVN sy-vline 
WA_E1HR_DV_STR-TTKKN sy-vline 
WA_E1HR_DV_STR-TKTXT sy-vline 
WA_E1HR_DV_STR-BESKN sy-vline 
WA_E1HR_DV_STR-DUVST sy-vline 
WA_E1HR_DV_STR-WLGRD sy-vline 
WA_E1HR_DV_STR-WGTXT sy-vline 
WA_E1HR_DV_STR-BPRAE sy-vline 
WA_E1HR_DV_STR-GRBWR sy-vline 
WA_E1HR_DV_STR-KZMAN sy-vline 
WA_E1HR_DV_STR-NBPBR sy-vline 
WA_E1HR_DV_STR-PRBEG sy-vline 
WA_E1HR_DV_STR-SONMD sy-vline 
WA_E1HR_DV_STR-KONMD sy-vline 
WA_E1HR_DV_STR-PGRD3 sy-vline 
WA_E1HR_DV_STR-PGKTXT sy-vline 
WA_E1HR_DV_STR-STKZU sy-vline 
WA_E1HR_DV_STR-STKZA sy-vline 
WA_E1HR_DV_STR-STKZK sy-vline 
WA_E1HR_DV_STR-KZSTA sy-vline 
WA_E1HR_DV_STR-TTSCH sy-vline 
WA_E1HR_DV_STR-TTBRF sy-vline 
WA_E1HR_DV_STR-ABSCH sy-vline 
WA_E1HR_DV_STR-ABBRF sy-vline 
WA_E1HR_DV_STR-ANUEB sy-vline 
WA_E1HR_DV_STR-VTFRM sy-vline      INTO ld_text SEPARATED BY SPACE.

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