ABAP Select data from SAP table RNERP_FI_ABUZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNERP_FI_ABUZ
*  INTO TABLE @DATA(IT_RNERP_FI_ABUZ2).
*--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_RNERP_FI_ABUZ INDEX 1 INTO DATA(WA_RNERP_FI_ABUZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNERP_FI_ABUZ>-BUKRS = 1.
<RNERP_FI_ABUZ>-GJAHR = 1.
<RNERP_FI_ABUZ>-VORGN = 1.
<RNERP_FI_ABUZ>-MONAT = 1.
<RNERP_FI_ABUZ>-BLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNERP_FI_ABUZ-ANLN1, sy-vline,
  WA_RNERP_FI_ABUZ-ANLN2, sy-vline,
  WA_RNERP_FI_ABUZ-AFABE, sy-vline,
  WA_RNERP_FI_ABUZ-KOART, sy-vline,
  WA_RNERP_FI_ABUZ-GSBER, sy-vline,
  WA_RNERP_FI_ABUZ-PARGB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNERP_FI_ABUZ 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_RNERP_FI_ABUZ 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_RNERP_FI_ABUZ INTO WA_RNERP_FI_ABUZ.


*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_RNERP_FI_ABUZ_STR, 
BUKRS TYPE STRING,
GJAHR TYPE STRING,
VORGN TYPE STRING,
MONAT TYPE STRING,
BLART TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
AFABE TYPE STRING,
KOART TYPE STRING,
GSBER TYPE STRING,
PARGB TYPE STRING,
CAUFN TYPE STRING,
IAUFN TYPE STRING,
EAUFN TYPE STRING,
POSNR TYPE STRING,
VBUND TYPE STRING,
HKONT TYPE STRING,
IMKEY TYPE STRING,
AUFNR TYPE STRING,
KOSTL TYPE STRING,
PROJN TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
BZDAT TYPE STRING,
ANBWA TYPE STRING,
BEWAR TYPE STRING,
WAERS TYPE STRING,
DMBTR TYPE STRING,
WRBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
MWSKZ TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
BSCHL TYPE STRING,
BUZEI TYPE STRING,
PRCTR TYPE STRING,
TXJCD TYPE STRING,
SGTXT TYPE STRING,
LNRAN TYPE STRING,
ZUONR TYPE STRING,
XBLNR TYPE STRING,
XHWU1 TYPE STRING,
XHWU2 TYPE STRING,
XHWU3 TYPE STRING,
FISTL TYPE STRING,
FIPOS TYPE STRING,
GEBER TYPE STRING,
FKBER TYPE STRING,
DABRZ TYPE STRING,
ETYPE TYPE STRING,
EGRUP TYPE STRING,
VNAME TYPE STRING,
RECID TYPE STRING,
ANLO1 TYPE STRING,
ANLO2 TYPE STRING,
MATNR TYPE STRING,
KNUMV TYPE STRING,
CONDI TYPE STRING,
XNEGP TYPE STRING,
XCOBJ TYPE STRING,
GRANT_NBR TYPE STRING,
INTRENO TYPE STRING,
SEGMENT TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNERP_FI_ABUZ_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_RNERP_FI_ABUZ_STR-BUKRS sy-vline 
WA_RNERP_FI_ABUZ_STR-GJAHR sy-vline 
WA_RNERP_FI_ABUZ_STR-VORGN sy-vline 
WA_RNERP_FI_ABUZ_STR-MONAT sy-vline 
WA_RNERP_FI_ABUZ_STR-BLART sy-vline 
WA_RNERP_FI_ABUZ_STR-ANLN1 sy-vline 
WA_RNERP_FI_ABUZ_STR-ANLN2 sy-vline 
WA_RNERP_FI_ABUZ_STR-AFABE sy-vline 
WA_RNERP_FI_ABUZ_STR-KOART sy-vline 
WA_RNERP_FI_ABUZ_STR-GSBER sy-vline 
WA_RNERP_FI_ABUZ_STR-PARGB sy-vline 
WA_RNERP_FI_ABUZ_STR-CAUFN sy-vline 
WA_RNERP_FI_ABUZ_STR-IAUFN sy-vline 
WA_RNERP_FI_ABUZ_STR-EAUFN sy-vline 
WA_RNERP_FI_ABUZ_STR-POSNR sy-vline 
WA_RNERP_FI_ABUZ_STR-VBUND sy-vline 
WA_RNERP_FI_ABUZ_STR-HKONT sy-vline 
WA_RNERP_FI_ABUZ_STR-IMKEY sy-vline 
WA_RNERP_FI_ABUZ_STR-AUFNR sy-vline 
WA_RNERP_FI_ABUZ_STR-KOSTL sy-vline 
WA_RNERP_FI_ABUZ_STR-PROJN sy-vline 
WA_RNERP_FI_ABUZ_STR-BLDAT sy-vline 
WA_RNERP_FI_ABUZ_STR-BUDAT sy-vline 
WA_RNERP_FI_ABUZ_STR-BZDAT sy-vline 
WA_RNERP_FI_ABUZ_STR-ANBWA sy-vline 
WA_RNERP_FI_ABUZ_STR-BEWAR sy-vline 
WA_RNERP_FI_ABUZ_STR-WAERS sy-vline 
WA_RNERP_FI_ABUZ_STR-DMBTR sy-vline 
WA_RNERP_FI_ABUZ_STR-WRBTR sy-vline 
WA_RNERP_FI_ABUZ_STR-DMBE2 sy-vline 
WA_RNERP_FI_ABUZ_STR-DMBE3 sy-vline 
WA_RNERP_FI_ABUZ_STR-MWSKZ sy-vline 
WA_RNERP_FI_ABUZ_STR-MENGE sy-vline 
WA_RNERP_FI_ABUZ_STR-MEINS sy-vline 
WA_RNERP_FI_ABUZ_STR-BSCHL sy-vline 
WA_RNERP_FI_ABUZ_STR-BUZEI sy-vline 
WA_RNERP_FI_ABUZ_STR-PRCTR sy-vline 
WA_RNERP_FI_ABUZ_STR-TXJCD sy-vline 
WA_RNERP_FI_ABUZ_STR-SGTXT sy-vline 
WA_RNERP_FI_ABUZ_STR-LNRAN sy-vline 
WA_RNERP_FI_ABUZ_STR-ZUONR sy-vline 
WA_RNERP_FI_ABUZ_STR-XBLNR sy-vline 
WA_RNERP_FI_ABUZ_STR-XHWU1 sy-vline 
WA_RNERP_FI_ABUZ_STR-XHWU2 sy-vline 
WA_RNERP_FI_ABUZ_STR-XHWU3 sy-vline 
WA_RNERP_FI_ABUZ_STR-FISTL sy-vline 
WA_RNERP_FI_ABUZ_STR-FIPOS sy-vline 
WA_RNERP_FI_ABUZ_STR-GEBER sy-vline 
WA_RNERP_FI_ABUZ_STR-FKBER sy-vline 
WA_RNERP_FI_ABUZ_STR-DABRZ sy-vline 
WA_RNERP_FI_ABUZ_STR-ETYPE sy-vline 
WA_RNERP_FI_ABUZ_STR-EGRUP sy-vline 
WA_RNERP_FI_ABUZ_STR-VNAME sy-vline 
WA_RNERP_FI_ABUZ_STR-RECID sy-vline 
WA_RNERP_FI_ABUZ_STR-ANLO1 sy-vline 
WA_RNERP_FI_ABUZ_STR-ANLO2 sy-vline 
WA_RNERP_FI_ABUZ_STR-MATNR sy-vline 
WA_RNERP_FI_ABUZ_STR-KNUMV sy-vline 
WA_RNERP_FI_ABUZ_STR-CONDI sy-vline 
WA_RNERP_FI_ABUZ_STR-XNEGP sy-vline 
WA_RNERP_FI_ABUZ_STR-XCOBJ sy-vline 
WA_RNERP_FI_ABUZ_STR-GRANT_NBR sy-vline 
WA_RNERP_FI_ABUZ_STR-INTRENO sy-vline 
WA_RNERP_FI_ABUZ_STR-SEGMENT sy-vline 
WA_RNERP_FI_ABUZ_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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