ABAP Select data from SAP table RNSE_ACCRUAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNSE_ACCRUAL
*  INTO TABLE @DATA(IT_RNSE_ACCRUAL2).
*--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_RNSE_ACCRUAL INDEX 1 INTO DATA(WA_RNSE_ACCRUAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNSE_ACCRUAL>-LNRLS = 1.
<RNSE_ACCRUAL>-GRLST = 1.
<RNSE_ACCRUAL>-GRTAR = 1.
<RNSE_ACCRUAL>-BRUWR = 1.
<RNSE_ACCRUAL>-NETWR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNSE_ACCRUAL-WAERS, sy-vline,
  WA_RNSE_ACCRUAL-KOSTL, sy-vline,
  WA_RNSE_ACCRUAL-KOKRS, sy-vline,
  WA_RNSE_ACCRUAL-MEINH, sy-vline,
  WA_RNSE_ACCRUAL-MENGE, sy-vline,
  WA_RNSE_ACCRUAL-BEGDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNSE_ACCRUAL 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_RNSE_ACCRUAL 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_RNSE_ACCRUAL INTO WA_RNSE_ACCRUAL.


*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 ALPHA, internal->external for field LNRLS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-LNRLS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-LNRLS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRLST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-GRLST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-GRLST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-GRTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-GRTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERBOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-ERBOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-ERBOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANFOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-ANFOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-ANFOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANPOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-ANPOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-ANPOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFKY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSE_ACCRUAL-REFKY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSE_ACCRUAL-REFKY.
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_RNSE_ACCRUAL_STR, 
LNRLS TYPE STRING,
GRLST TYPE STRING,
GRTAR TYPE STRING,
BRUWR TYPE STRING,
NETWR TYPE STRING,
WAERS TYPE STRING,
KOSTL TYPE STRING,
KOKRS TYPE STRING,
MEINH TYPE STRING,
MENGE TYPE STRING,
BEGDT TYPE STRING,
ENDDT TYPE STRING,
BEGZT TYPE STRING,
ENDZT TYPE STRING,
ERBOE TYPE STRING,
ANFOE TYPE STRING,
ANPOE TYPE STRING,
LTEXT TYPE STRING,
REFKY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNSE_ACCRUAL_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_RNSE_ACCRUAL_STR-LNRLS sy-vline 
WA_RNSE_ACCRUAL_STR-GRLST sy-vline 
WA_RNSE_ACCRUAL_STR-GRTAR sy-vline 
WA_RNSE_ACCRUAL_STR-BRUWR sy-vline 
WA_RNSE_ACCRUAL_STR-NETWR sy-vline 
WA_RNSE_ACCRUAL_STR-WAERS sy-vline 
WA_RNSE_ACCRUAL_STR-KOSTL sy-vline 
WA_RNSE_ACCRUAL_STR-KOKRS sy-vline 
WA_RNSE_ACCRUAL_STR-MEINH sy-vline 
WA_RNSE_ACCRUAL_STR-MENGE sy-vline 
WA_RNSE_ACCRUAL_STR-BEGDT sy-vline 
WA_RNSE_ACCRUAL_STR-ENDDT sy-vline 
WA_RNSE_ACCRUAL_STR-BEGZT sy-vline 
WA_RNSE_ACCRUAL_STR-ENDZT sy-vline 
WA_RNSE_ACCRUAL_STR-ERBOE sy-vline 
WA_RNSE_ACCRUAL_STR-ANFOE sy-vline 
WA_RNSE_ACCRUAL_STR-ANPOE sy-vline 
WA_RNSE_ACCRUAL_STR-LTEXT sy-vline 
WA_RNSE_ACCRUAL_STR-REFKY sy-vline      INTO ld_text SEPARATED BY SPACE.

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