ABAP Select data from SAP table HBRSE21 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HBRSE21 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 HBRSE21. 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 HBRSE21 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_HBRSE21 TYPE STANDARD TABLE OF HBRSE21,
      WA_HBRSE21 TYPE HBRSE21,
      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: <HBRSE21> TYPE HBRSE21.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HBRSE21.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HBRSE21
  INTO TABLE IT_HBRSE21.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HBRSE21
*  INTO TABLE @DATA(IT_HBRSE212).
*--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_HBRSE21 INDEX 1 INTO DATA(WA_HBRSE212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HBRSE21 ASSIGNING <HBRSE21>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HBRSE21>-STPRG = 1.
<HBRSE21>-SINTY = 1.
<HBRSE21>-SINSC = 1.
<HBRSE21>-INTYT = 1.
<HBRSE21>-INSCT = 1.

ENDLOOP.

LOOP AT IT_HBRSE21 INTO WA_HBRSE21.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HBRSE21-SZR21, sy-vline,
  WA_HBRSE21-COMVA, sy-vline,
  WA_HBRSE21-COMPI, sy-vline,
  WA_HBRSE21-COMPF, sy-vline,
  WA_HBRSE21-RCAVI, sy-vline,
  WA_HBRSE21-RCAOE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HBRSE21 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_HBRSE21 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_HBRSE21 INTO WA_HBRSE21.


*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_HBRSE21_STR, 
STPRG TYPE STRING,
SINTY TYPE STRING,
SINSC TYPE STRING,
INTYT TYPE STRING,
INSCT TYPE STRING,
SZR21 TYPE STRING,
COMVA TYPE STRING,
COMPI TYPE STRING,
COMPF TYPE STRING,
RCAVI TYPE STRING,
RCAOE TYPE STRING,
PFGTS TYPE STRING,
FGTS4 TYPE STRING,
FGVAR TYPE STRING,
BR204 TYPE STRING,
SFILI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HBRSE21_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_HBRSE21_STR-STPRG sy-vline 
WA_HBRSE21_STR-SINTY sy-vline 
WA_HBRSE21_STR-SINSC sy-vline 
WA_HBRSE21_STR-INTYT sy-vline 
WA_HBRSE21_STR-INSCT sy-vline 
WA_HBRSE21_STR-SZR21 sy-vline 
WA_HBRSE21_STR-COMVA sy-vline 
WA_HBRSE21_STR-COMPI sy-vline 
WA_HBRSE21_STR-COMPF sy-vline 
WA_HBRSE21_STR-RCAVI sy-vline 
WA_HBRSE21_STR-RCAOE sy-vline 
WA_HBRSE21_STR-PFGTS sy-vline 
WA_HBRSE21_STR-FGTS4 sy-vline 
WA_HBRSE21_STR-FGVAR sy-vline 
WA_HBRSE21_STR-BR204 sy-vline 
WA_HBRSE21_STR-SFILI sy-vline      INTO ld_text SEPARATED BY SPACE.

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