ABAP Select data from SAP table RNBDTDIA into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNBDTDIA 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 RNBDTDIA. 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 RNBDTDIA 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_RNBDTDIA TYPE STANDARD TABLE OF RNBDTDIA,
      WA_RNBDTDIA TYPE RNBDTDIA,
      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: <RNBDTDIA> TYPE RNBDTDIA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNBDTDIA
*  INTO TABLE @DATA(IT_RNBDTDIA2).
*--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_RNBDTDIA INDEX 1 INTO DATA(WA_RNBDTDIA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNBDTDIA>-MANDT = 1.
<RNBDTDIA>-EINRI = 1.
<RNBDTDIA>-FALNR = 1.
<RNBDTDIA>-LFDNR = 1.
<RNBDTDIA>-LFDBEW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNBDTDIA-BELNR, sy-vline,
  WA_RNBDTDIA-DKAT1, sy-vline,
  WA_RNBDTDIA-DKEY1, sy-vline,
  WA_RNBDTDIA-DKAT2, sy-vline,
  WA_RNBDTDIA-DKEY2, sy-vline,
  WA_RNBDTDIA-DKAT_REF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNBDTDIA 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_RNBDTDIA 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_RNBDTDIA INTO WA_RNBDTDIA.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBDTDIA-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBDTDIA-EINRI.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SCHEINNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBDTDIA-SCHEINNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBDTDIA-SCHEINNR.
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_RNBDTDIA_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
LFDNR TYPE STRING,
LFDBEW TYPE STRING,
BELNR TYPE STRING,
DKAT1 TYPE STRING,
DKEY1 TYPE STRING,
DKAT2 TYPE STRING,
DKEY2 TYPE STRING,
DKAT_REF TYPE STRING,
DKEY_REF TYPE STRING,
DITXT TYPE STRING,
DILTX TYPE STRING,
DIADT TYPE STRING,
DIAZT TYPE STRING,
DIAPE TYPE STRING,
ANZOP TYPE STRING,
EWDIA TYPE STRING,
BHDIA TYPE STRING,
AFDIA TYPE STRING,
ENDIA TYPE STRING,
FHDIA TYPE STRING,
KHDIA TYPE STRING,
OPDIA TYPE STRING,
SPERR TYPE STRING,
KZTXT TYPE STRING,
LGTXT TYPE STRING,
DIASI TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
ARDIA TYPE STRING,
PODIA TYPE STRING,
TUDIA TYPE STRING,
DIABZ TYPE STRING,
DIAPR TYPE STRING,
DIAGW TYPE STRING,
DIAZS TYPE STRING,
DIALO TYPE STRING,
EXTID TYPE STRING,
DIAFP TYPE STRING,
REFKY TYPE STRING,
DRG_DIA_SEQNO TYPE STRING,
DRG_CATEGORY TYPE STRING,
DRG_CC TYPE STRING,
DRG_RELVANT TYPE STRING,
DTYP1 TYPE STRING,
DTYP2 TYPE STRING,
DTYP_REF TYPE STRING,
ALTERN_DIATXT TYPE STRING,
TCODE TYPE STRING,
DIA_LINK TYPE STRING,
CCL TYPE STRING,
TIMESTAMP TYPE STRING,
DIAG_EXCF TYPE STRING,
/ISHFR/FHDIAKZ TYPE STRING,
QUALF TYPE STRING,
DRG_IMPACT TYPE STRING,
SCHEINNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNBDTDIA_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_RNBDTDIA_STR-MANDT sy-vline 
WA_RNBDTDIA_STR-EINRI sy-vline 
WA_RNBDTDIA_STR-FALNR sy-vline 
WA_RNBDTDIA_STR-LFDNR sy-vline 
WA_RNBDTDIA_STR-LFDBEW sy-vline 
WA_RNBDTDIA_STR-BELNR sy-vline 
WA_RNBDTDIA_STR-DKAT1 sy-vline 
WA_RNBDTDIA_STR-DKEY1 sy-vline 
WA_RNBDTDIA_STR-DKAT2 sy-vline 
WA_RNBDTDIA_STR-DKEY2 sy-vline 
WA_RNBDTDIA_STR-DKAT_REF sy-vline 
WA_RNBDTDIA_STR-DKEY_REF sy-vline 
WA_RNBDTDIA_STR-DITXT sy-vline 
WA_RNBDTDIA_STR-DILTX sy-vline 
WA_RNBDTDIA_STR-DIADT sy-vline 
WA_RNBDTDIA_STR-DIAZT sy-vline 
WA_RNBDTDIA_STR-DIAPE sy-vline 
WA_RNBDTDIA_STR-ANZOP sy-vline 
WA_RNBDTDIA_STR-EWDIA sy-vline 
WA_RNBDTDIA_STR-BHDIA sy-vline 
WA_RNBDTDIA_STR-AFDIA sy-vline 
WA_RNBDTDIA_STR-ENDIA sy-vline 
WA_RNBDTDIA_STR-FHDIA sy-vline 
WA_RNBDTDIA_STR-KHDIA sy-vline 
WA_RNBDTDIA_STR-OPDIA sy-vline 
WA_RNBDTDIA_STR-SPERR sy-vline 
WA_RNBDTDIA_STR-KZTXT sy-vline 
WA_RNBDTDIA_STR-LGTXT sy-vline 
WA_RNBDTDIA_STR-DIASI sy-vline 
WA_RNBDTDIA_STR-ERDAT sy-vline 
WA_RNBDTDIA_STR-ERTIM sy-vline 
WA_RNBDTDIA_STR-ERUSR sy-vline 
WA_RNBDTDIA_STR-UPDAT sy-vline 
WA_RNBDTDIA_STR-UPUSR sy-vline 
WA_RNBDTDIA_STR-STORN sy-vline 
WA_RNBDTDIA_STR-STUSR sy-vline 
WA_RNBDTDIA_STR-STDAT sy-vline 
WA_RNBDTDIA_STR-ARDIA sy-vline 
WA_RNBDTDIA_STR-PODIA sy-vline 
WA_RNBDTDIA_STR-TUDIA sy-vline 
WA_RNBDTDIA_STR-DIABZ sy-vline 
WA_RNBDTDIA_STR-DIAPR sy-vline 
WA_RNBDTDIA_STR-DIAGW sy-vline 
WA_RNBDTDIA_STR-DIAZS sy-vline 
WA_RNBDTDIA_STR-DIALO sy-vline 
WA_RNBDTDIA_STR-EXTID sy-vline 
WA_RNBDTDIA_STR-DIAFP sy-vline 
WA_RNBDTDIA_STR-REFKY sy-vline 
WA_RNBDTDIA_STR-DRG_DIA_SEQNO sy-vline 
WA_RNBDTDIA_STR-DRG_CATEGORY sy-vline 
WA_RNBDTDIA_STR-DRG_CC sy-vline 
WA_RNBDTDIA_STR-DRG_RELVANT sy-vline 
WA_RNBDTDIA_STR-DTYP1 sy-vline 
WA_RNBDTDIA_STR-DTYP2 sy-vline 
WA_RNBDTDIA_STR-DTYP_REF sy-vline 
WA_RNBDTDIA_STR-ALTERN_DIATXT sy-vline 
WA_RNBDTDIA_STR-TCODE sy-vline 
WA_RNBDTDIA_STR-DIA_LINK sy-vline 
WA_RNBDTDIA_STR-CCL sy-vline 
WA_RNBDTDIA_STR-TIMESTAMP sy-vline 
WA_RNBDTDIA_STR-DIAG_EXCF sy-vline 
WA_RNBDTDIA_STR-/ISHFR/FHDIAKZ sy-vline 
WA_RNBDTDIA_STR-QUALF sy-vline 
WA_RNBDTDIA_STR-DRG_IMPACT sy-vline 
WA_RNBDTDIA_STR-SCHEINNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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