ABAP Select data from SAP table HBRRG4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HBRRG4 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 HBRRG4. 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 HBRRG4 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_HBRRG4 TYPE STANDARD TABLE OF HBRRG4,
      WA_HBRRG4 TYPE HBRRG4,
      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: <HBRRG4> TYPE HBRRG4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HBRRG4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HBRRG4
  INTO TABLE IT_HBRRG4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HBRRG4
*  INTO TABLE @DATA(IT_HBRRG42).
*--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_HBRRG4 INDEX 1 INTO DATA(WA_HBRRG42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HBRRG4 ASSIGNING <HBRRG4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HBRRG4>-RCODE = 1.
<HBRRG4>-CGCCE = 1.
<HBRRG4>-RESER = 1.
<HBRRG4>-CODEE = 1.
<HBRRG4>-PERNR = 1.

ENDLOOP.

LOOP AT IT_HBRRG4 INTO WA_HBRRG4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HBRRG4-CTPSN, sy-vline,
  WA_HBRRG4-CTPSS, sy-vline,
  WA_HBRRG4-HIRDT, sy-vline,
  WA_HBRRG4-RSTRE, sy-vline,
  WA_HBRRG4-RDIST, sy-vline,
  WA_HBRRG4-RZIP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HBRRG4 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_HBRRG4 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_HBRRG4 INTO WA_HBRRG4.


*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_HBRRG4_STR, 
RCODE TYPE STRING,
CGCCE TYPE STRING,
RESER TYPE STRING,
CODEE TYPE STRING,
PERNR TYPE STRING,
CTPSN TYPE STRING,
CTPSS TYPE STRING,
HIRDT TYPE STRING,
RSTRE TYPE STRING,
RDIST TYPE STRING,
RZIP TYPE STRING,
RCITY TYPE STRING,
RSTAT TYPE STRING,
RBLA4 TYPE STRING,
INSTY TYPE STRING,
RCGC TYPE STRING,
PISNR TYPE STRING,
RSEQU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HBRRG4_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_HBRRG4_STR-RCODE sy-vline 
WA_HBRRG4_STR-CGCCE sy-vline 
WA_HBRRG4_STR-RESER sy-vline 
WA_HBRRG4_STR-CODEE sy-vline 
WA_HBRRG4_STR-PERNR sy-vline 
WA_HBRRG4_STR-CTPSN sy-vline 
WA_HBRRG4_STR-CTPSS sy-vline 
WA_HBRRG4_STR-HIRDT sy-vline 
WA_HBRRG4_STR-RSTRE sy-vline 
WA_HBRRG4_STR-RDIST sy-vline 
WA_HBRRG4_STR-RZIP sy-vline 
WA_HBRRG4_STR-RCITY sy-vline 
WA_HBRRG4_STR-RSTAT sy-vline 
WA_HBRRG4_STR-RBLA4 sy-vline 
WA_HBRRG4_STR-INSTY sy-vline 
WA_HBRRG4_STR-RCGC sy-vline 
WA_HBRRG4_STR-PISNR sy-vline 
WA_HBRRG4_STR-RSEQU sy-vline      INTO ld_text SEPARATED BY SPACE.

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