ABAP Select data from SAP table RNDDRGCASEDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNDDRGCASEDATA
*  INTO TABLE @DATA(IT_RNDDRGCASEDATA2).
*--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_RNDDRGCASEDATA INDEX 1 INTO DATA(WA_RNDDRGCASEDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNDDRGCASEDATA>-MANDT = 1.
<RNDDRGCASEDATA>-EINRI = 1.
<RNDDRGCASEDATA>-PATNR = 1.
<RNDDRGCASEDATA>-FALNR = 1.
<RNDDRGCASEDATA>-RESPI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNDDRGCASEDATA-BWGR1, sy-vline,
  WA_RNDDRGCASEDATA-BWGR2, sy-vline,
  WA_RNDDRGCASEDATA-BGTXT, sy-vline,
  WA_RNDDRGCASEDATA-PATGEW, sy-vline,
  WA_RNDDRGCASEDATA-GWEIN, sy-vline,
  WA_RNDDRGCASEDATA-ENTLGR1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNDDRGCASEDATA 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_RNDDRGCASEDATA 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_RNDDRGCASEDATA INTO WA_RNDDRGCASEDATA.


*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_RNDDRGCASEDATA-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDDRGCASEDATA-EINRI.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field GWEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RNDDRGCASEDATA-GWEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDDRGCASEDATA-GWEIN.
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_RNDDRGCASEDATA_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
PATNR TYPE STRING,
FALNR TYPE STRING,
RESPI TYPE STRING,
BWGR1 TYPE STRING,
BWGR2 TYPE STRING,
BGTXT TYPE STRING,
PATGEW TYPE STRING,
GWEIN TYPE STRING,
ENTLGR1 TYPE STRING,
ENTLGR2 TYPE STRING,
ENTLGTXT TYPE STRING,
ALTER TYPE STRING,
DAUER TYPE STRING,
FPEDT TYPE STRING,
TOB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNDDRGCASEDATA_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_RNDDRGCASEDATA_STR-MANDT sy-vline 
WA_RNDDRGCASEDATA_STR-EINRI sy-vline 
WA_RNDDRGCASEDATA_STR-PATNR sy-vline 
WA_RNDDRGCASEDATA_STR-FALNR sy-vline 
WA_RNDDRGCASEDATA_STR-RESPI sy-vline 
WA_RNDDRGCASEDATA_STR-BWGR1 sy-vline 
WA_RNDDRGCASEDATA_STR-BWGR2 sy-vline 
WA_RNDDRGCASEDATA_STR-BGTXT sy-vline 
WA_RNDDRGCASEDATA_STR-PATGEW sy-vline 
WA_RNDDRGCASEDATA_STR-GWEIN sy-vline 
WA_RNDDRGCASEDATA_STR-ENTLGR1 sy-vline 
WA_RNDDRGCASEDATA_STR-ENTLGR2 sy-vline 
WA_RNDDRGCASEDATA_STR-ENTLGTXT sy-vline 
WA_RNDDRGCASEDATA_STR-ALTER sy-vline 
WA_RNDDRGCASEDATA_STR-DAUER sy-vline 
WA_RNDDRGCASEDATA_STR-FPEDT sy-vline 
WA_RNDDRGCASEDATA_STR-TOB sy-vline      INTO ld_text SEPARATED BY SPACE.

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