ABAP Select data from SAP table RHRA2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RHRA2 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 RHRA2. 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 RHRA2 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_RHRA2 TYPE STANDARD TABLE OF RHRA2,
      WA_RHRA2 TYPE RHRA2,
      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: <RHRA2> TYPE RHRA2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RHRA2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RHRA2
  INTO TABLE IT_RHRA2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RHRA2
*  INTO TABLE @DATA(IT_RHRA22).
*--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_RHRA2 INDEX 1 INTO DATA(WA_RHRA22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RHRA2 ASSIGNING <RHRA2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RHRA2>-PLVAR = 1.
<RHRA2>-OTYPE = 1.
<RHRA2>-OBJID = 1.
<RHRA2>-ISTAT = 1.
<RHRA2>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_RHRA2 INTO WA_RHRA2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RHRA2-ENDDA, sy-vline,
  WA_RHRA2-LANGU, sy-vline,
  WA_RHRA2-SHORT, sy-vline,
  WA_RHRA2-STEXT, sy-vline,
  WA_RHRA2-VKIND, sy-vline,
  WA_RHRA2-TLCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RHRA2 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_RHRA2 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_RHRA2 INTO WA_RHRA2.


*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.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RHRA2-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHRA2-LANGU.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RHRA2_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
LANGU TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
VKIND TYPE STRING,
TLCNT TYPE STRING,
LUNCH TYPE STRING,
LECNT TYPE STRING,
LICNT TYPE STRING,
LUNTB TYPE STRING,
BBLK1 TYPE STRING,
EBLK1 TYPE STRING,
SAPOT TYPE STRING,
SAPID TYPE STRING,
SAPSH TYPE STRING,
SAPST TYPE STRING,
LUNOT TYPE STRING,
LUNID TYPE STRING,
LUNSH TYPE STRING,
LUNST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RHRA2_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_RHRA2_STR-PLVAR sy-vline 
WA_RHRA2_STR-OTYPE sy-vline 
WA_RHRA2_STR-OBJID sy-vline 
WA_RHRA2_STR-ISTAT sy-vline 
WA_RHRA2_STR-BEGDA sy-vline 
WA_RHRA2_STR-ENDDA sy-vline 
WA_RHRA2_STR-LANGU sy-vline 
WA_RHRA2_STR-SHORT sy-vline 
WA_RHRA2_STR-STEXT sy-vline 
WA_RHRA2_STR-VKIND sy-vline 
WA_RHRA2_STR-TLCNT sy-vline 
WA_RHRA2_STR-LUNCH sy-vline 
WA_RHRA2_STR-LECNT sy-vline 
WA_RHRA2_STR-LICNT sy-vline 
WA_RHRA2_STR-LUNTB sy-vline 
WA_RHRA2_STR-BBLK1 sy-vline 
WA_RHRA2_STR-EBLK1 sy-vline 
WA_RHRA2_STR-SAPOT sy-vline 
WA_RHRA2_STR-SAPID sy-vline 
WA_RHRA2_STR-SAPSH sy-vline 
WA_RHRA2_STR-SAPST sy-vline 
WA_RHRA2_STR-LUNOT sy-vline 
WA_RHRA2_STR-LUNID sy-vline 
WA_RHRA2_STR-LUNSH sy-vline 
WA_RHRA2_STR-LUNST sy-vline      INTO ld_text SEPARATED BY SPACE.

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