ABAP Select data from SAP table HRD3DBKV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRD3DBKV 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 HRD3DBKV. 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 HRD3DBKV 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_HRD3DBKV TYPE STANDARD TABLE OF HRD3DBKV,
      WA_HRD3DBKV TYPE HRD3DBKV,
      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: <HRD3DBKV> TYPE HRD3DBKV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRD3DBKV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRD3DBKV
  INTO TABLE IT_HRD3DBKV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRD3DBKV
*  INTO TABLE @DATA(IT_HRD3DBKV2).
*--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_HRD3DBKV INDEX 1 INTO DATA(WA_HRD3DBKV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRD3DBKV ASSIGNING <HRD3DBKV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRD3DBKV>-KENNZST = 1.
<HRD3DBKV>-KVGD = 1.
<HRD3DBKV>-SVTG = 1.
<HRD3DBKV>-ZRBGKV = 1.
<HRD3DBKV>-ZRENKV = 1.

ENDLOOP.

LOOP AT IT_HRD3DBKV INTO WA_HRD3DBKV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRD3DBKV-LFDEG, sy-vline,
  WA_HRD3DBKV-EZEG, sy-vline,
  WA_HRD3DBKV-BBGRUKUG, sy-vline,
  WA_HRD3DBKV-KENNZGLESV, sy-vline,
  WA_HRD3DBKV-EENW, sy-vline,
  WA_HRD3DBKV-SOSA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRD3DBKV 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_HRD3DBKV 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_HRD3DBKV INTO WA_HRD3DBKV.


*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_HRD3DBKV_STR, 
KENNZST TYPE STRING,
KVGD TYPE STRING,
SVTG TYPE STRING,
ZRBGKV TYPE STRING,
ZRENKV TYPE STRING,
LFDEG TYPE STRING,
EZEG TYPE STRING,
BBGRUKUG TYPE STRING,
KENNZGLESV TYPE STRING,
EENW TYPE STRING,
SOSA TYPE STRING,
RJEG TYPE STRING,
BBGRUATG TYPE STRING,
BYGR TYPE STRING,
KENNZRK TYPE STRING,
LFDKV TYPE STRING,
LFDRV TYPE STRING,
LFDAV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRD3DBKV_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_HRD3DBKV_STR-KENNZST sy-vline 
WA_HRD3DBKV_STR-KVGD sy-vline 
WA_HRD3DBKV_STR-SVTG sy-vline 
WA_HRD3DBKV_STR-ZRBGKV sy-vline 
WA_HRD3DBKV_STR-ZRENKV sy-vline 
WA_HRD3DBKV_STR-LFDEG sy-vline 
WA_HRD3DBKV_STR-EZEG sy-vline 
WA_HRD3DBKV_STR-BBGRUKUG sy-vline 
WA_HRD3DBKV_STR-KENNZGLESV sy-vline 
WA_HRD3DBKV_STR-EENW sy-vline 
WA_HRD3DBKV_STR-SOSA sy-vline 
WA_HRD3DBKV_STR-RJEG sy-vline 
WA_HRD3DBKV_STR-BBGRUATG sy-vline 
WA_HRD3DBKV_STR-BYGR sy-vline 
WA_HRD3DBKV_STR-KENNZRK sy-vline 
WA_HRD3DBKV_STR-LFDKV sy-vline 
WA_HRD3DBKV_STR-LFDRV sy-vline 
WA_HRD3DBKV_STR-LFDAV sy-vline      INTO ld_text SEPARATED BY SPACE.

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