ABAP Select data from SAP table E1HR_NS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_NS 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_NS. 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_NS 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_NS TYPE STANDARD TABLE OF E1HR_NS,
      WA_E1HR_NS TYPE E1HR_NS,
      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_NS> TYPE E1HR_NS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_NS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_NS
  INTO TABLE IT_E1HR_NS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_NS
*  INTO TABLE @DATA(IT_E1HR_NS2).
*--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_NS INDEX 1 INTO DATA(WA_E1HR_NS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_NS ASSIGNING <E1HR_NS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_NS>-BEGDA = 1.
<E1HR_NS>-ENDDA = 1.
<E1HR_NS>-KDZW1 = 1.
<E1HR_NS>-KDWW1 = 1.
<E1HR_NS>-KDWAO = 1.

ENDLOOP.

LOOP AT IT_E1HR_NS INTO WA_E1HR_NS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_NS-KDZKS, sy-vline,
  WA_E1HR_NS-NVERZ, sy-vline,
  WA_E1HR_NS-TEKST, sy-vline,
  WA_E1HR_NS-BDRPR, sy-vline,
  WA_E1HR_NS-INHPR, sy-vline,
  WA_E1HR_NS-BDRWG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_NS 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_NS 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_NS INTO WA_E1HR_NS.


*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_NS_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
KDZW1 TYPE STRING,
KDWW1 TYPE STRING,
KDWAO TYPE STRING,
KDZKS TYPE STRING,
NVERZ TYPE STRING,
TEKST TYPE STRING,
BDRPR TYPE STRING,
INHPR TYPE STRING,
BDRWG TYPE STRING,
INHBS TYPE STRING,
DATSF TYPE STRING,
BPERC TYPE STRING,
BBEDR TYPE STRING,
MBEDR TYPE STRING,
EXSV1 TYPE STRING,
EXSV2 TYPE STRING,
EXSV3 TYPE STRING,
EXSV4 TYPE STRING,
EXSV5 TYPE STRING,
SVGRP TYPE STRING,
SVDAY TYPE STRING,
ZKVGP TYPE STRING,
SVMET TYPE STRING,
PKLAS TYPE STRING,
ZKVNR TYPE STRING,
MBVCD TYPE STRING,
UPKOW TYPE STRING,
ARBGK TYPE STRING,
DATAG TYPE STRING,
JGKRT TYPE STRING,
NOMPR TYPE STRING,
WGBNP TYPE STRING,
INCVZ TYPE STRING,
IDCVZ TYPE STRING,
FACVZ TYPE STRING,
SIRHE TYPE STRING,
SIBEG TYPE STRING,
SIEND TYPE STRING,
EXREE TYPE STRING,
SIEMA TYPE STRING,
REPOR TYPE STRING,
EXSJR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_NS_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_NS_STR-BEGDA sy-vline 
WA_E1HR_NS_STR-ENDDA sy-vline 
WA_E1HR_NS_STR-KDZW1 sy-vline 
WA_E1HR_NS_STR-KDWW1 sy-vline 
WA_E1HR_NS_STR-KDWAO sy-vline 
WA_E1HR_NS_STR-KDZKS sy-vline 
WA_E1HR_NS_STR-NVERZ sy-vline 
WA_E1HR_NS_STR-TEKST sy-vline 
WA_E1HR_NS_STR-BDRPR sy-vline 
WA_E1HR_NS_STR-INHPR sy-vline 
WA_E1HR_NS_STR-BDRWG sy-vline 
WA_E1HR_NS_STR-INHBS sy-vline 
WA_E1HR_NS_STR-DATSF sy-vline 
WA_E1HR_NS_STR-BPERC sy-vline 
WA_E1HR_NS_STR-BBEDR sy-vline 
WA_E1HR_NS_STR-MBEDR sy-vline 
WA_E1HR_NS_STR-EXSV1 sy-vline 
WA_E1HR_NS_STR-EXSV2 sy-vline 
WA_E1HR_NS_STR-EXSV3 sy-vline 
WA_E1HR_NS_STR-EXSV4 sy-vline 
WA_E1HR_NS_STR-EXSV5 sy-vline 
WA_E1HR_NS_STR-SVGRP sy-vline 
WA_E1HR_NS_STR-SVDAY sy-vline 
WA_E1HR_NS_STR-ZKVGP sy-vline 
WA_E1HR_NS_STR-SVMET sy-vline 
WA_E1HR_NS_STR-PKLAS sy-vline 
WA_E1HR_NS_STR-ZKVNR sy-vline 
WA_E1HR_NS_STR-MBVCD sy-vline 
WA_E1HR_NS_STR-UPKOW sy-vline 
WA_E1HR_NS_STR-ARBGK sy-vline 
WA_E1HR_NS_STR-DATAG sy-vline 
WA_E1HR_NS_STR-JGKRT sy-vline 
WA_E1HR_NS_STR-NOMPR sy-vline 
WA_E1HR_NS_STR-WGBNP sy-vline 
WA_E1HR_NS_STR-INCVZ sy-vline 
WA_E1HR_NS_STR-IDCVZ sy-vline 
WA_E1HR_NS_STR-FACVZ sy-vline 
WA_E1HR_NS_STR-SIRHE sy-vline 
WA_E1HR_NS_STR-SIBEG sy-vline 
WA_E1HR_NS_STR-SIEND sy-vline 
WA_E1HR_NS_STR-EXREE sy-vline 
WA_E1HR_NS_STR-SIEMA sy-vline 
WA_E1HR_NS_STR-REPOR sy-vline 
WA_E1HR_NS_STR-EXSJR sy-vline      INTO ld_text SEPARATED BY SPACE.

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