ABAP Select data from SAP table E1HR_NF into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_NF 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_NF. 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_NF 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_NF TYPE STANDARD TABLE OF E1HR_NF,
      WA_E1HR_NF TYPE E1HR_NF,
      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_NF> TYPE E1HR_NF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_NF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_NF
  INTO TABLE IT_E1HR_NF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_NF
*  INTO TABLE @DATA(IT_E1HR_NF2).
*--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_NF INDEX 1 INTO DATA(WA_E1HR_NF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_NF ASSIGNING <E1HR_NF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_NF>-BEGDA = 1.
<E1HR_NF>-ENDDA = 1.
<E1HR_NF>-SUBTY = 1.
<E1HR_NF>-VRZDT = 1.
<E1HR_NF>-VTEXT = 1.

ENDLOOP.

LOOP AT IT_E1HR_NF INTO WA_E1HR_NF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_NF-VRZNR, sy-vline,
  WA_E1HR_NF-BEHDT, sy-vline,
  WA_E1HR_NF-BEHPR, sy-vline,
  WA_E1HR_NF-BESDT, sy-vline,
  WA_E1HR_NF-BSLT1, sy-vline,
  WA_E1HR_NF-BSLT2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_NF 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_NF 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_NF INTO WA_E1HR_NF.


*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_NF_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SUBTY TYPE STRING,
VRZDT TYPE STRING,
VTEXT TYPE STRING,
VRZNR TYPE STRING,
BEHDT TYPE STRING,
BEHPR TYPE STRING,
BESDT TYPE STRING,
BSLT1 TYPE STRING,
BSLT2 TYPE STRING,
BRSPR TYPE STRING,
BRPDT TYPE STRING,
BRRST TYPE STRING,
SOFBT TYPE STRING,
BETDT TYPE STRING,
BETWZ TYPE STRING,
TRGBT TYPE STRING,
TRGDT TYPE STRING,
TRGWZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_NF_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_NF_STR-BEGDA sy-vline 
WA_E1HR_NF_STR-ENDDA sy-vline 
WA_E1HR_NF_STR-SUBTY sy-vline 
WA_E1HR_NF_STR-VRZDT sy-vline 
WA_E1HR_NF_STR-VTEXT sy-vline 
WA_E1HR_NF_STR-VRZNR sy-vline 
WA_E1HR_NF_STR-BEHDT sy-vline 
WA_E1HR_NF_STR-BEHPR sy-vline 
WA_E1HR_NF_STR-BESDT sy-vline 
WA_E1HR_NF_STR-BSLT1 sy-vline 
WA_E1HR_NF_STR-BSLT2 sy-vline 
WA_E1HR_NF_STR-BRSPR sy-vline 
WA_E1HR_NF_STR-BRPDT sy-vline 
WA_E1HR_NF_STR-BRRST sy-vline 
WA_E1HR_NF_STR-SOFBT sy-vline 
WA_E1HR_NF_STR-BETDT sy-vline 
WA_E1HR_NF_STR-BETWZ sy-vline 
WA_E1HR_NF_STR-TRGBT sy-vline 
WA_E1HR_NF_STR-TRGDT sy-vline 
WA_E1HR_NF_STR-TRGWZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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