ABAP Select data from SAP table E1HR_NV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_NV 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_NV. 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_NV 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_NV TYPE STANDARD TABLE OF E1HR_NV,
      WA_E1HR_NV TYPE E1HR_NV,
      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_NV> TYPE E1HR_NV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_NV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_NV
  INTO TABLE IT_E1HR_NV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_NV
*  INTO TABLE @DATA(IT_E1HR_NV2).
*--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_NV INDEX 1 INTO DATA(WA_E1HR_NV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_NV ASSIGNING <E1HR_NV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_NV>-BEGDA = 1.
<E1HR_NV>-ENDDA = 1.
<E1HR_NV>-SPASA = 1.
<E1HR_NV>-AANS1 = 1.
<E1HR_NV>-VGAAN = 1.

ENDLOOP.

LOOP AT IT_E1HR_NV INTO WA_E1HR_NV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_NV-VGSPA, sy-vline,
  WA_E1HR_NV-BETRS, sy-vline,
  WA_E1HR_NV-BETRR, sy-vline,
  WA_E1HR_NV-EMFSS, sy-vline,
  WA_E1HR_NV-EMFTS, sy-vline,
  WA_E1HR_NV-BKPLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_NV 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_NV 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_NV INTO WA_E1HR_NV.


*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_NV_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SPASA TYPE STRING,
AANS1 TYPE STRING,
VGAAN TYPE STRING,
VGSPA TYPE STRING,
BETRS TYPE STRING,
BETRR TYPE STRING,
EMFSS TYPE STRING,
EMFTS TYPE STRING,
BKPLS TYPE STRING,
BKORS TYPE STRING,
BASKS TYPE STRING,
BASKL TYPE STRING,
BASKN TYPE STRING,
ZLSCS TYPE STRING,
ZWECK TYPE STRING,
DOELU TYPE STRING,
BETRU TYPE STRING,
EMFSU TYPE STRING,
EMFTU TYPE STRING,
BKPLU TYPE STRING,
BKORU TYPE STRING,
BAUKS TYPE STRING,
BAUKL TYPE STRING,
BAUKN TYPE STRING,
ZLSCU TYPE STRING,
AANTJ TYPE STRING,
LLVLK TYPE STRING,
DEBIT TYPE STRING,
IAAN1 TYPE STRING,
ZANZL TYPE STRING,
ZFPER TYPE STRING,
LLRGR TYPE STRING,
BDRWG TYPE STRING,
WGBSU TYPE STRING,
LLUBB TYPE STRING,
PCTWN TYPE STRING,
PCTWG TYPE STRING,
IBANS TYPE STRING,
IBANU TYPE STRING,
BETRB TYPE STRING,
PWNBB TYPE STRING,
INTBB TYPE STRING,
ESPBB TYPE STRING,
FWGBB TYPE STRING,
SRPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_NV_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_NV_STR-BEGDA sy-vline 
WA_E1HR_NV_STR-ENDDA sy-vline 
WA_E1HR_NV_STR-SPASA sy-vline 
WA_E1HR_NV_STR-AANS1 sy-vline 
WA_E1HR_NV_STR-VGAAN sy-vline 
WA_E1HR_NV_STR-VGSPA sy-vline 
WA_E1HR_NV_STR-BETRS sy-vline 
WA_E1HR_NV_STR-BETRR sy-vline 
WA_E1HR_NV_STR-EMFSS sy-vline 
WA_E1HR_NV_STR-EMFTS sy-vline 
WA_E1HR_NV_STR-BKPLS sy-vline 
WA_E1HR_NV_STR-BKORS sy-vline 
WA_E1HR_NV_STR-BASKS sy-vline 
WA_E1HR_NV_STR-BASKL sy-vline 
WA_E1HR_NV_STR-BASKN sy-vline 
WA_E1HR_NV_STR-ZLSCS sy-vline 
WA_E1HR_NV_STR-ZWECK sy-vline 
WA_E1HR_NV_STR-DOELU sy-vline 
WA_E1HR_NV_STR-BETRU sy-vline 
WA_E1HR_NV_STR-EMFSU sy-vline 
WA_E1HR_NV_STR-EMFTU sy-vline 
WA_E1HR_NV_STR-BKPLU sy-vline 
WA_E1HR_NV_STR-BKORU sy-vline 
WA_E1HR_NV_STR-BAUKS sy-vline 
WA_E1HR_NV_STR-BAUKL sy-vline 
WA_E1HR_NV_STR-BAUKN sy-vline 
WA_E1HR_NV_STR-ZLSCU sy-vline 
WA_E1HR_NV_STR-AANTJ sy-vline 
WA_E1HR_NV_STR-LLVLK sy-vline 
WA_E1HR_NV_STR-DEBIT sy-vline 
WA_E1HR_NV_STR-IAAN1 sy-vline 
WA_E1HR_NV_STR-ZANZL sy-vline 
WA_E1HR_NV_STR-ZFPER sy-vline 
WA_E1HR_NV_STR-LLRGR sy-vline 
WA_E1HR_NV_STR-BDRWG sy-vline 
WA_E1HR_NV_STR-WGBSU sy-vline 
WA_E1HR_NV_STR-LLUBB sy-vline 
WA_E1HR_NV_STR-PCTWN sy-vline 
WA_E1HR_NV_STR-PCTWG sy-vline 
WA_E1HR_NV_STR-IBANS sy-vline 
WA_E1HR_NV_STR-IBANU sy-vline 
WA_E1HR_NV_STR-BETRB sy-vline 
WA_E1HR_NV_STR-PWNBB sy-vline 
WA_E1HR_NV_STR-INTBB sy-vline 
WA_E1HR_NV_STR-ESPBB sy-vline 
WA_E1HR_NV_STR-FWGBB sy-vline 
WA_E1HR_NV_STR-SRPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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