ABAP Select data from SAP table RNPATLIST 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 RNPATLIST 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 RNPATLIST. 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 RNPATLIST 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_RNPATLIST TYPE STANDARD TABLE OF RNPATLIST,
      WA_RNPATLIST TYPE RNPATLIST,
      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: <RNPATLIST> TYPE RNPATLIST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNPATLIST
*  INTO TABLE @DATA(IT_RNPATLIST2).
*--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_RNPATLIST INDEX 1 INTO DATA(WA_RNPATLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNPATLIST>-PATNR = 1.
<RNPATLIST>-PZIFF = 1.
<RNPATLIST>-EINRI = 1.
<RNPATLIST>-EINKB = 1.
<RNPATLIST>-STORN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNPATLIST-NNAME, sy-vline,
  WA_RNPATLIST-NNAMS, sy-vline,
  WA_RNPATLIST-VNAME, sy-vline,
  WA_RNPATLIST-VNAMS, sy-vline,
  WA_RNPATLIST-VORSW, sy-vline,
  WA_RNPATLIST-NAMZU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNPATLIST 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_RNPATLIST 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_RNPATLIST INTO WA_RNPATLIST.


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

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

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

*Conversion exit NLJUS, internal->external for field PASSNR
CALL FUNCTION 'CONVERSION_EXIT_NLJUS_OUTPUT'
  EXPORTING
    input =                      WA_RNPATLIST-PASSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPATLIST-PASSNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field ADRN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPATLIST-ADRN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPATLIST-ADRN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PAPID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPATLIST-PAPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPATLIST-PAPID.
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_RNPATLIST_STR, 
PATNR TYPE STRING,
PZIFF TYPE STRING,
EINRI TYPE STRING,
EINKB TYPE STRING,
STORN TYPE STRING,
NNAME TYPE STRING,
NNAMS TYPE STRING,
VNAME TYPE STRING,
VNAMS TYPE STRING,
VORSW TYPE STRING,
NAMZU TYPE STRING,
TITEL TYPE STRING,
NAME2 TYPE STRING,
PNAME TYPE STRING,
GBNAM TYPE STRING,
GBNAS TYPE STRING,
GBDAT TYPE STRING,
GSCHL TYPE STRING,
GSCHLE TYPE STRING,
GSCHLTXT TYPE STRING,
NO_TC_ICON TYPE STRING,
EXTNR TYPE STRING,
RVNUM TYPE STRING,
PASSTY TYPE STRING,
PASSTYTXT TYPE STRING,
PASSNR TYPE STRING,
RESID TYPE STRING,
TODKZ TYPE STRING,
TODUR TYPE STRING,
TUTXT TYPE STRING,
AUFKZ TYPE STRING,
KRZAN TYPE STRING,
NOTAN TYPE STRING,
LAND TYPE STRING,
LANDX TYPE STRING,
PSTLZ TYPE STRING,
ORT TYPE STRING,
ORT2 TYPE STRING,
STRAS TYPE STRING,
TELNR TYPE STRING,
ADRES TYPE STRING,
RFPAT TYPE STRING,
TERMINID TYPE STRING,
ADRNR TYPE STRING,
ADROB TYPE STRING,
ADRN2 TYPE STRING,
ADRO2 TYPE STRING,
VIPKZ TYPE STRING,
INACT TYPE STRING,
PAPID TYPE STRING,
VKGID TYPE STRING,
INSID TYPE STRING,
PATEXTID TYPE STRING,
STP TYPE STRING,
TAXNUM TYPE STRING,
/ISHFR/BIRTHRK TYPE STRING,
EXTERNAL_SYSTEM TYPE STRING,
PSPNAME TYPE STRING,
PSPGBNAME TYPE STRING,
PSPADDRESS TYPE STRING,
EXTAUFG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNPATLIST_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_RNPATLIST_STR-PATNR sy-vline 
WA_RNPATLIST_STR-PZIFF sy-vline 
WA_RNPATLIST_STR-EINRI sy-vline 
WA_RNPATLIST_STR-EINKB sy-vline 
WA_RNPATLIST_STR-STORN sy-vline 
WA_RNPATLIST_STR-NNAME sy-vline 
WA_RNPATLIST_STR-NNAMS sy-vline 
WA_RNPATLIST_STR-VNAME sy-vline 
WA_RNPATLIST_STR-VNAMS sy-vline 
WA_RNPATLIST_STR-VORSW sy-vline 
WA_RNPATLIST_STR-NAMZU sy-vline 
WA_RNPATLIST_STR-TITEL sy-vline 
WA_RNPATLIST_STR-NAME2 sy-vline 
WA_RNPATLIST_STR-PNAME sy-vline 
WA_RNPATLIST_STR-GBNAM sy-vline 
WA_RNPATLIST_STR-GBNAS sy-vline 
WA_RNPATLIST_STR-GBDAT sy-vline 
WA_RNPATLIST_STR-GSCHL sy-vline 
WA_RNPATLIST_STR-GSCHLE sy-vline 
WA_RNPATLIST_STR-GSCHLTXT sy-vline 
WA_RNPATLIST_STR-NO_TC_ICON sy-vline 
WA_RNPATLIST_STR-EXTNR sy-vline 
WA_RNPATLIST_STR-RVNUM sy-vline 
WA_RNPATLIST_STR-PASSTY sy-vline 
WA_RNPATLIST_STR-PASSTYTXT sy-vline 
WA_RNPATLIST_STR-PASSNR sy-vline 
WA_RNPATLIST_STR-RESID sy-vline 
WA_RNPATLIST_STR-TODKZ sy-vline 
WA_RNPATLIST_STR-TODUR sy-vline 
WA_RNPATLIST_STR-TUTXT sy-vline 
WA_RNPATLIST_STR-AUFKZ sy-vline 
WA_RNPATLIST_STR-KRZAN sy-vline 
WA_RNPATLIST_STR-NOTAN sy-vline 
WA_RNPATLIST_STR-LAND sy-vline 
WA_RNPATLIST_STR-LANDX sy-vline 
WA_RNPATLIST_STR-PSTLZ sy-vline 
WA_RNPATLIST_STR-ORT sy-vline 
WA_RNPATLIST_STR-ORT2 sy-vline 
WA_RNPATLIST_STR-STRAS sy-vline 
WA_RNPATLIST_STR-TELNR sy-vline 
WA_RNPATLIST_STR-ADRES sy-vline 
WA_RNPATLIST_STR-RFPAT sy-vline 
WA_RNPATLIST_STR-TERMINID sy-vline 
WA_RNPATLIST_STR-ADRNR sy-vline 
WA_RNPATLIST_STR-ADROB sy-vline 
WA_RNPATLIST_STR-ADRN2 sy-vline 
WA_RNPATLIST_STR-ADRO2 sy-vline 
WA_RNPATLIST_STR-VIPKZ sy-vline 
WA_RNPATLIST_STR-INACT sy-vline 
WA_RNPATLIST_STR-PAPID sy-vline 
WA_RNPATLIST_STR-VKGID sy-vline 
WA_RNPATLIST_STR-INSID sy-vline 
WA_RNPATLIST_STR-PATEXTID sy-vline 
WA_RNPATLIST_STR-STP sy-vline 
WA_RNPATLIST_STR-TAXNUM sy-vline 
WA_RNPATLIST_STR-/ISHFR/BIRTHRK sy-vline 
WA_RNPATLIST_STR-EXTERNAL_SYSTEM sy-vline 
WA_RNPATLIST_STR-PSPNAME sy-vline 
WA_RNPATLIST_STR-PSPGBNAME sy-vline 
WA_RNPATLIST_STR-PSPADDRESS sy-vline 
WA_RNPATLIST_STR-EXTAUFG sy-vline      INTO ld_text SEPARATED BY SPACE.

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