ABAP Select data from SAP table E1HR_NT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_NT 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_NT. 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_NT 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_NT TYPE STANDARD TABLE OF E1HR_NT,
      WA_E1HR_NT TYPE E1HR_NT,
      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_NT> TYPE E1HR_NT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_NT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_NT
  INTO TABLE IT_E1HR_NT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_NT
*  INTO TABLE @DATA(IT_E1HR_NT2).
*--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_NT INDEX 1 INTO DATA(WA_E1HR_NT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_NT ASSIGNING <E1HR_NT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_NT>-BEGDA = 1.
<E1HR_NT>-ENDDA = 1.
<E1HR_NT>-SOFIN = 1.
<E1HR_NT>-KDLHF = 1.
<E1HR_NT>-BGLST = 1.

ENDLOOP.

LOOP AT IT_E1HR_NT INTO WA_E1HR_NT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_NT-TABEL, sy-vline,
  WA_E1HR_NT-TIJDV, sy-vline,
  WA_E1HR_NT-TARGR, sy-vline,
  WA_E1HR_NT-INKKD, sy-vline,
  WA_E1HR_NT-JAARL, sy-vline,
  WA_E1HR_NT-JRLOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_NT 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_NT 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_NT INTO WA_E1HR_NT.


*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_NT_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SOFIN TYPE STRING,
KDLHF TYPE STRING,
BGLST TYPE STRING,
TABEL TYPE STRING,
TIJDV TYPE STRING,
TARGR TYPE STRING,
INKKD TYPE STRING,
JAARL TYPE STRING,
JRLOT TYPE STRING,
BYZTR TYPE STRING,
MACHT TYPE STRING,
BEPBT TYPE STRING,
BAFTD TYPE STRING,
BAFTB TYPE STRING,
BTARD TYPE STRING,
BTART TYPE STRING,
BLTBD TYPE STRING,
SPEC1 TYPE STRING,
SPEC2 TYPE STRING,
SPEC3 TYPE STRING,
SPEC4 TYPE STRING,
SPEC5 TYPE STRING,
AUSNA TYPE STRING,
GEMBZ TYPE STRING,
ONKST TYPE STRING,
ATRFG TYPE STRING,
AKLHF TYPE STRING,
CDFIS TYPE STRING,
CDVDR TYPE STRING,
OTHOG TYPE STRING,
CNTR TYPE STRING,
AFBBT TYPE STRING,
PWNBD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_NT_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_NT_STR-BEGDA sy-vline 
WA_E1HR_NT_STR-ENDDA sy-vline 
WA_E1HR_NT_STR-SOFIN sy-vline 
WA_E1HR_NT_STR-KDLHF sy-vline 
WA_E1HR_NT_STR-BGLST sy-vline 
WA_E1HR_NT_STR-TABEL sy-vline 
WA_E1HR_NT_STR-TIJDV sy-vline 
WA_E1HR_NT_STR-TARGR sy-vline 
WA_E1HR_NT_STR-INKKD sy-vline 
WA_E1HR_NT_STR-JAARL sy-vline 
WA_E1HR_NT_STR-JRLOT sy-vline 
WA_E1HR_NT_STR-BYZTR sy-vline 
WA_E1HR_NT_STR-MACHT sy-vline 
WA_E1HR_NT_STR-BEPBT sy-vline 
WA_E1HR_NT_STR-BAFTD sy-vline 
WA_E1HR_NT_STR-BAFTB sy-vline 
WA_E1HR_NT_STR-BTARD sy-vline 
WA_E1HR_NT_STR-BTART sy-vline 
WA_E1HR_NT_STR-BLTBD sy-vline 
WA_E1HR_NT_STR-SPEC1 sy-vline 
WA_E1HR_NT_STR-SPEC2 sy-vline 
WA_E1HR_NT_STR-SPEC3 sy-vline 
WA_E1HR_NT_STR-SPEC4 sy-vline 
WA_E1HR_NT_STR-SPEC5 sy-vline 
WA_E1HR_NT_STR-AUSNA sy-vline 
WA_E1HR_NT_STR-GEMBZ sy-vline 
WA_E1HR_NT_STR-ONKST sy-vline 
WA_E1HR_NT_STR-ATRFG sy-vline 
WA_E1HR_NT_STR-AKLHF sy-vline 
WA_E1HR_NT_STR-CDFIS sy-vline 
WA_E1HR_NT_STR-CDVDR sy-vline 
WA_E1HR_NT_STR-OTHOG sy-vline 
WA_E1HR_NT_STR-CNTR sy-vline 
WA_E1HR_NT_STR-AFBBT sy-vline 
WA_E1HR_NT_STR-PWNBD sy-vline      INTO ld_text SEPARATED BY SPACE.

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