ABAP Select data from SAP table RNERP_FI_ACCHD 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_ACCHD 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_ACCHD. 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_ACCHD 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_ACCHD TYPE STANDARD TABLE OF RNERP_FI_ACCHD,
      WA_RNERP_FI_ACCHD TYPE RNERP_FI_ACCHD,
      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_ACCHD> TYPE RNERP_FI_ACCHD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNERP_FI_ACCHD
*  INTO TABLE @DATA(IT_RNERP_FI_ACCHD2).
*--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_ACCHD INDEX 1 INTO DATA(WA_RNERP_FI_ACCHD2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNERP_FI_ACCHD-GLVOR, sy-vline,
  WA_RNERP_FI_ACCHD-PROCESS, sy-vline,
  WA_RNERP_FI_ACCHD-SUBSET, sy-vline,
  WA_RNERP_FI_ACCHD-USNAM, sy-vline,
  WA_RNERP_FI_ACCHD-TCODE, sy-vline,
  WA_RNERP_FI_ACCHD-CPUDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNERP_FI_ACCHD 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_ACCHD 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_ACCHD INTO WA_RNERP_FI_ACCHD.


*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_ACCHD_STR, 
MANDT TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
AWSYS TYPE STRING,
GLVOR TYPE STRING,
PROCESS TYPE STRING,
SUBSET TYPE STRING,
USNAM TYPE STRING,
TCODE TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
BKTXT TYPE STRING,
DOCID TYPE STRING,
BARCD TYPE STRING,
KNUMV TYPE STRING,
STATUS_NEW TYPE STRING,
STATUS_OLD TYPE STRING,
GRPID TYPE STRING,
ACC_PRINCIPLE TYPE STRING,
RLDNR TYPE STRING,
LDGRP TYPE STRING,
NOSPLIT TYPE STRING,
GLPROCESS TYPE STRING,
GLPROCVAR TYPE STRING,
CASH_ALLOC TYPE STRING,
ALE_TRANSFER_TYPE TYPE STRING,
XMCA TYPE STRING,
PROPMANO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNERP_FI_ACCHD_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_ACCHD_STR-MANDT sy-vline 
WA_RNERP_FI_ACCHD_STR-AWTYP sy-vline 
WA_RNERP_FI_ACCHD_STR-AWREF sy-vline 
WA_RNERP_FI_ACCHD_STR-AWORG sy-vline 
WA_RNERP_FI_ACCHD_STR-AWSYS sy-vline 
WA_RNERP_FI_ACCHD_STR-GLVOR sy-vline 
WA_RNERP_FI_ACCHD_STR-PROCESS sy-vline 
WA_RNERP_FI_ACCHD_STR-SUBSET sy-vline 
WA_RNERP_FI_ACCHD_STR-USNAM sy-vline 
WA_RNERP_FI_ACCHD_STR-TCODE sy-vline 
WA_RNERP_FI_ACCHD_STR-CPUDT sy-vline 
WA_RNERP_FI_ACCHD_STR-CPUTM sy-vline 
WA_RNERP_FI_ACCHD_STR-BKTXT sy-vline 
WA_RNERP_FI_ACCHD_STR-DOCID sy-vline 
WA_RNERP_FI_ACCHD_STR-BARCD sy-vline 
WA_RNERP_FI_ACCHD_STR-KNUMV sy-vline 
WA_RNERP_FI_ACCHD_STR-STATUS_NEW sy-vline 
WA_RNERP_FI_ACCHD_STR-STATUS_OLD sy-vline 
WA_RNERP_FI_ACCHD_STR-GRPID sy-vline 
WA_RNERP_FI_ACCHD_STR-ACC_PRINCIPLE sy-vline 
WA_RNERP_FI_ACCHD_STR-RLDNR sy-vline 
WA_RNERP_FI_ACCHD_STR-LDGRP sy-vline 
WA_RNERP_FI_ACCHD_STR-NOSPLIT sy-vline 
WA_RNERP_FI_ACCHD_STR-GLPROCESS sy-vline 
WA_RNERP_FI_ACCHD_STR-GLPROCVAR sy-vline 
WA_RNERP_FI_ACCHD_STR-CASH_ALLOC sy-vline 
WA_RNERP_FI_ACCHD_STR-ALE_TRANSFER_TYPE sy-vline 
WA_RNERP_FI_ACCHD_STR-XMCA sy-vline 
WA_RNERP_FI_ACCHD_STR-PROPMANO sy-vline      INTO ld_text SEPARATED BY SPACE.

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