ABAP Select data from SAP table RNERP_FI_ACCCR 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_ACCCR 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_ACCCR. 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_ACCCR 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_ACCCR TYPE STANDARD TABLE OF RNERP_FI_ACCCR,
      WA_RNERP_FI_ACCCR TYPE RNERP_FI_ACCCR,
      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_ACCCR> TYPE RNERP_FI_ACCCR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNERP_FI_ACCCR
*  INTO TABLE @DATA(IT_RNERP_FI_ACCCR2).
*--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_ACCCR INDEX 1 INTO DATA(WA_RNERP_FI_ACCCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNERP_FI_ACCCR>-MANDT = 1.
<RNERP_FI_ACCCR>-AWTYP = 1.
<RNERP_FI_ACCCR>-AWREF = 1.
<RNERP_FI_ACCCR>-AWORG = 1.
<RNERP_FI_ACCCR>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNERP_FI_ACCCR-CURTP, sy-vline,
  WA_RNERP_FI_ACCCR-WAERS, sy-vline,
  WA_RNERP_FI_ACCCR-ISTAT, sy-vline,
  WA_RNERP_FI_ACCCR-WRBTR, sy-vline,
  WA_RNERP_FI_ACCCR-KURSF, sy-vline,
  WA_RNERP_FI_ACCCR-KURST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNERP_FI_ACCCR 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_ACCCR 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_ACCCR INTO WA_RNERP_FI_ACCCR.


*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_ACCCR_STR, 
MANDT TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
POSNR TYPE STRING,
CURTP TYPE STRING,
WAERS TYPE STRING,
ISTAT TYPE STRING,
WRBTR TYPE STRING,
KURSF TYPE STRING,
KURST TYPE STRING,
FWBAS TYPE STRING,
SKFBT TYPE STRING,
WSKTO TYPE STRING,
KZBTR TYPE STRING,
QSSHB TYPE STRING,
QSFBT TYPE STRING,
BUALT TYPE STRING,
KWERT TYPE STRING,
NAVBT TYPE STRING,
WMWST TYPE STRING,
CURRTYP TYPE STRING,
VALUTYP TYPE STRING,
GBETR TYPE STRING,
KURSR TYPE STRING,
WRBTR_FIX TYPE STRING,
KURSX TYPE STRING,
PPDIF TYPE STRING,
WRBTR_AVG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNERP_FI_ACCCR_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_ACCCR_STR-MANDT sy-vline 
WA_RNERP_FI_ACCCR_STR-AWTYP sy-vline 
WA_RNERP_FI_ACCCR_STR-AWREF sy-vline 
WA_RNERP_FI_ACCCR_STR-AWORG sy-vline 
WA_RNERP_FI_ACCCR_STR-POSNR sy-vline 
WA_RNERP_FI_ACCCR_STR-CURTP sy-vline 
WA_RNERP_FI_ACCCR_STR-WAERS sy-vline 
WA_RNERP_FI_ACCCR_STR-ISTAT sy-vline 
WA_RNERP_FI_ACCCR_STR-WRBTR sy-vline 
WA_RNERP_FI_ACCCR_STR-KURSF sy-vline 
WA_RNERP_FI_ACCCR_STR-KURST sy-vline 
WA_RNERP_FI_ACCCR_STR-FWBAS sy-vline 
WA_RNERP_FI_ACCCR_STR-SKFBT sy-vline 
WA_RNERP_FI_ACCCR_STR-WSKTO sy-vline 
WA_RNERP_FI_ACCCR_STR-KZBTR sy-vline 
WA_RNERP_FI_ACCCR_STR-QSSHB sy-vline 
WA_RNERP_FI_ACCCR_STR-QSFBT sy-vline 
WA_RNERP_FI_ACCCR_STR-BUALT sy-vline 
WA_RNERP_FI_ACCCR_STR-KWERT sy-vline 
WA_RNERP_FI_ACCCR_STR-NAVBT sy-vline 
WA_RNERP_FI_ACCCR_STR-WMWST sy-vline 
WA_RNERP_FI_ACCCR_STR-CURRTYP sy-vline 
WA_RNERP_FI_ACCCR_STR-VALUTYP sy-vline 
WA_RNERP_FI_ACCCR_STR-GBETR sy-vline 
WA_RNERP_FI_ACCCR_STR-KURSR sy-vline 
WA_RNERP_FI_ACCCR_STR-WRBTR_FIX sy-vline 
WA_RNERP_FI_ACCCR_STR-KURSX sy-vline 
WA_RNERP_FI_ACCCR_STR-PPDIF sy-vline 
WA_RNERP_FI_ACCCR_STR-WRBTR_AVG sy-vline      INTO ld_text SEPARATED BY SPACE.

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