ABAP Select data from SAP table RNPD1 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNPD1 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 RNPD1. 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 RNPD1 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_RNPD1 TYPE STANDARD TABLE OF RNPD1,
      WA_RNPD1 TYPE RNPD1,
      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: <RNPD1> TYPE RNPD1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNPD1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNPD1
  INTO TABLE IT_RNPD1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNPD1
*  INTO TABLE @DATA(IT_RNPD12).
*--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_RNPD1 INDEX 1 INTO DATA(WA_RNPD12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNPD1 ASSIGNING <RNPD1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNPD1>-ALBUM = 1.
<RNPD1>-AMBULANT = 1.
<RNPD1>-ANFDAT = 1.
<RNPD1>-ARCHIV = 1.
<RNPD1>-ATTDOC = 1.

ENDLOOP.

LOOP AT IT_RNPD1 INTO WA_RNPD1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNPD1-DOCNAME, sy-vline,
  WA_RNPD1-DKTXT, sy-vline,
  WA_RNPD1-DOKAR, sy-vline,
  WA_RNPD1-DOKNR, sy-vline,
  WA_RNPD1-DOKTL, sy-vline,
  WA_RNPD1-DOKVR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNPD1 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_RNPD1 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_RNPD1 INTO WA_RNPD1.


*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 ARCHIV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ARCHIV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ARCHIV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ATTDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ATTDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ATTDOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTLOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ENTLOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ENTLOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTZW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ENTZW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ENTZW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FACHOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-FACHOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-FACHOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ORGFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ORGFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGHI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ORGHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ORGHI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-ORGPF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-ORGPF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PFLEGOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-PFLEGOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-PFLEGOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STANDORT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-STANDORT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-STANDORT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TODOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPD1-TODOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPD1-TODOKNR.
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_RNPD1_STR, 
ALBUM TYPE STRING,
AMBULANT TYPE STRING,
ANFDAT TYPE STRING,
ARCHIV TYPE STRING,
ATTDOC TYPE STRING,
DOCNAME TYPE STRING,
DKTXT TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
EINRI TYPE STRING,
ENTLEND TYPE STRING,
ENTLEIH TYPE STRING,
ENTLOE TYPE STRING,
ENTZW TYPE STRING,
EXTNR TYPE STRING,
EXTPATNR TYPE STRING,
FACHOE TYPE STRING,
FALNR TYPE STRING,
FZIFF TYPE STRING,
GSCHLE TYPE STRING,
INFOMR TYPE STRING,
LGTXT TYPE STRING,
MADAT TYPE STRING,
MICROF TYPE STRING,
MFYEAR TYPE STRING,
ORGFA TYPE STRING,
ORGHI TYPE STRING,
ORGPF TYPE STRING,
ORGFKB TYPE STRING,
ORGHKB TYPE STRING,
ORGPKB TYPE STRING,
PATNR TYPE STRING,
PFLEGOE TYPE STRING,
PNAME TYPE STRING,
PZIFF TYPE STRING,
AUTORETURN TYPE STRING,
ROLLNO TYPE STRING,
STANDORT TYPE STRING,
STATIONAER TYPE STRING,
STATUS TYPE STRING,
STATUSTXT TYPE STRING,
SDOKNR TYPE STRING,
SPATNR TYPE STRING,
SGEBDT TYPE STRING,
SENTLH TYPE STRING,
SBWIDT TYPE STRING,
SANFDT TYPE STRING,
SORTMR TYPE STRING,
TEMPMR TYPE STRING,
TODO TYPE STRING,
TODOKNR TYPE STRING,
TODOKAR TYPE STRING,
VERANTWN TYPE STRING,
VERANTTEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNPD1_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_RNPD1_STR-ALBUM sy-vline 
WA_RNPD1_STR-AMBULANT sy-vline 
WA_RNPD1_STR-ANFDAT sy-vline 
WA_RNPD1_STR-ARCHIV sy-vline 
WA_RNPD1_STR-ATTDOC sy-vline 
WA_RNPD1_STR-DOCNAME sy-vline 
WA_RNPD1_STR-DKTXT sy-vline 
WA_RNPD1_STR-DOKAR sy-vline 
WA_RNPD1_STR-DOKNR sy-vline 
WA_RNPD1_STR-DOKTL sy-vline 
WA_RNPD1_STR-DOKVR sy-vline 
WA_RNPD1_STR-EINRI sy-vline 
WA_RNPD1_STR-ENTLEND sy-vline 
WA_RNPD1_STR-ENTLEIH sy-vline 
WA_RNPD1_STR-ENTLOE sy-vline 
WA_RNPD1_STR-ENTZW sy-vline 
WA_RNPD1_STR-EXTNR sy-vline 
WA_RNPD1_STR-EXTPATNR sy-vline 
WA_RNPD1_STR-FACHOE sy-vline 
WA_RNPD1_STR-FALNR sy-vline 
WA_RNPD1_STR-FZIFF sy-vline 
WA_RNPD1_STR-GSCHLE sy-vline 
WA_RNPD1_STR-INFOMR sy-vline 
WA_RNPD1_STR-LGTXT sy-vline 
WA_RNPD1_STR-MADAT sy-vline 
WA_RNPD1_STR-MICROF sy-vline 
WA_RNPD1_STR-MFYEAR sy-vline 
WA_RNPD1_STR-ORGFA sy-vline 
WA_RNPD1_STR-ORGHI sy-vline 
WA_RNPD1_STR-ORGPF sy-vline 
WA_RNPD1_STR-ORGFKB sy-vline 
WA_RNPD1_STR-ORGHKB sy-vline 
WA_RNPD1_STR-ORGPKB sy-vline 
WA_RNPD1_STR-PATNR sy-vline 
WA_RNPD1_STR-PFLEGOE sy-vline 
WA_RNPD1_STR-PNAME sy-vline 
WA_RNPD1_STR-PZIFF sy-vline 
WA_RNPD1_STR-AUTORETURN sy-vline 
WA_RNPD1_STR-ROLLNO sy-vline 
WA_RNPD1_STR-STANDORT sy-vline 
WA_RNPD1_STR-STATIONAER sy-vline 
WA_RNPD1_STR-STATUS sy-vline 
WA_RNPD1_STR-STATUSTXT sy-vline 
WA_RNPD1_STR-SDOKNR sy-vline 
WA_RNPD1_STR-SPATNR sy-vline 
WA_RNPD1_STR-SGEBDT sy-vline 
WA_RNPD1_STR-SENTLH sy-vline 
WA_RNPD1_STR-SBWIDT sy-vline 
WA_RNPD1_STR-SANFDT sy-vline 
WA_RNPD1_STR-SORTMR sy-vline 
WA_RNPD1_STR-TEMPMR sy-vline 
WA_RNPD1_STR-TODO sy-vline 
WA_RNPD1_STR-TODOKNR sy-vline 
WA_RNPD1_STR-TODOKAR sy-vline 
WA_RNPD1_STR-VERANTWN sy-vline 
WA_RNPD1_STR-VERANTTEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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