ABAP Select data from SAP table RNV2000_PHYSICIANS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNV2000_PHYSICIANS 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 RNV2000_PHYSICIANS. 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 RNV2000_PHYSICIANS 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_RNV2000_PHYSICIANS TYPE STANDARD TABLE OF RNV2000_PHYSICIANS,
      WA_RNV2000_PHYSICIANS TYPE RNV2000_PHYSICIANS,
      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: <RNV2000_PHYSICIANS> TYPE RNV2000_PHYSICIANS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNV2000_PHYSICIANS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNV2000_PHYSICIANS
  INTO TABLE IT_RNV2000_PHYSICIANS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNV2000_PHYSICIANS
*  INTO TABLE @DATA(IT_RNV2000_PHYSICIANS2).
*--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_RNV2000_PHYSICIANS INDEX 1 INTO DATA(WA_RNV2000_PHYSICIANS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNV2000_PHYSICIANS ASSIGNING <RNV2000_PHYSICIANS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNV2000_PHYSICIANS>-EARNR = 1.
<RNV2000_PHYSICIANS>-UARNR = 1.
<RNV2000_PHYSICIANS>-HARNR = 1.
<RNV2000_PHYSICIANS>-BARNR = 1.
<RNV2000_PHYSICIANS>-OARNR = 1.

ENDLOOP.

LOOP AT IT_RNV2000_PHYSICIANS INTO WA_RNV2000_PHYSICIANS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNV2000_PHYSICIANS-AARNR, sy-vline,
  WA_RNV2000_PHYSICIANS-DARNR, sy-vline,
  WA_RNV2000_PHYSICIANS-NARNR, sy-vline,
  WA_RNV2000_PHYSICIANS-FARNR, sy-vline,
  WA_RNV2000_PHYSICIANS-GARNR, sy-vline,
  WA_RNV2000_PHYSICIANS-EARNRX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNV2000_PHYSICIANS 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_RNV2000_PHYSICIANS 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_RNV2000_PHYSICIANS INTO WA_RNV2000_PHYSICIANS.


*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 EARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-EARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-EARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-UARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-UARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-HARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-HARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-BARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-BARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-OARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-OARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-AARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-AARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-DARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-DARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-NARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-NARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-FARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-FARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_PHYSICIANS-GARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_PHYSICIANS-GARNR.
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_RNV2000_PHYSICIANS_STR, 
EARNR TYPE STRING,
UARNR TYPE STRING,
HARNR TYPE STRING,
BARNR TYPE STRING,
OARNR TYPE STRING,
AARNR TYPE STRING,
DARNR TYPE STRING,
NARNR TYPE STRING,
FARNR TYPE STRING,
GARNR TYPE STRING,
EARNRX TYPE STRING,
UARNRX TYPE STRING,
HARNRX TYPE STRING,
BARNRX TYPE STRING,
OARNRX TYPE STRING,
AARNRX TYPE STRING,
DARNRX TYPE STRING,
NARNRX TYPE STRING,
FARNRX TYPE STRING,
GARNRX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNV2000_PHYSICIANS_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_RNV2000_PHYSICIANS_STR-EARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-UARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-HARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-BARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-OARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-AARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-DARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-NARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-FARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-GARNR sy-vline 
WA_RNV2000_PHYSICIANS_STR-EARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-UARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-HARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-BARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-OARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-AARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-DARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-NARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-FARNRX sy-vline 
WA_RNV2000_PHYSICIANS_STR-GARNRX sy-vline      INTO ld_text SEPARATED BY SPACE.

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