ABAP Select data from SAP table RNPATFIND_IN_FW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNPATFIND_IN_FW
*  INTO TABLE @DATA(IT_RNPATFIND_IN_FW2).
*--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_RNPATFIND_IN_FW INDEX 1 INTO DATA(WA_RNPATFIND_IN_FW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNPATFIND_IN_FW>-KEY_DATA = 1.
<RNPATFIND_IN_FW>-MANDT = 1.
<RNPATFIND_IN_FW>-GUID = 1.
<RNPATFIND_IN_FW>-EVENT = 1.
<RNPATFIND_IN_FW>-APPLK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNPATFIND_IN_FW-EINRI, sy-vline,
  WA_RNPATFIND_IN_FW-FALNR, sy-vline,
  WA_RNPATFIND_IN_FW-LFDNR, sy-vline,
  WA_RNPATFIND_IN_FW-PATNR, sy-vline,
  WA_RNPATFIND_IN_FW-EXTNR, sy-vline,
  WA_RNPATFIND_IN_FW-KOSTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNPATFIND_IN_FW 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_RNPATFIND_IN_FW 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_RNPATFIND_IN_FW INTO WA_RNPATFIND_IN_FW.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LAST_PAT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPATFIND_IN_FW-LAST_PAT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPATFIND_IN_FW-LAST_PAT_ID.
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_RNPATFIND_IN_FW_STR, 
KEY_DATA TYPE STRING,
MANDT TYPE STRING,
GUID TYPE STRING,
EVENT TYPE STRING,
APPLK TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
LFDNR TYPE STRING,
PATNR TYPE STRING,
EXTNR TYPE STRING,
KOSTR TYPE STRING,
COMNUM TYPE STRING,
KEY1 TYPE STRING,
KEY2 TYPE STRING,
KEY3 TYPE STRING,
KEY4 TYPE STRING,
KEY5 TYPE STRING,
KEY6 TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERUSR TYPE STRING,
TA TYPE STRING,
DATA_TYPE TYPE STRING,
REF_GUID TYPE STRING,
SEARCH_DATA TYPE STRING,
EINRI TYPE STRING,
PATNR TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
GBNAM TYPE STRING,
GBDATV TYPE STRING,
GBDATB TYPE STRING,
GSCHLE TYPE STRING,
RVNUM TYPE STRING,
EXTNR TYPE STRING,
PASSTY TYPE STRING,
PASNR TYPE STRING,
ADDR_SELECTION TYPE STRING,
LAND TYPE STRING,
LAND_NAME TYPE STRING,
REGIO TYPE STRING,
ORT TYPE STRING,
ORT2 TYPE STRING,
PSTLZ TYPE STRING,
STRAZ TYPE STRING,
STRAS TYPE STRING,
BUILD TYPE STRING,
FLOOR TYPE STRING,
ROOM TYPE STRING,
PFACH TYPE STRING,
SPHON TYPE STRING,
READ_NPAP TYPE STRING,
PFOERTNER TYPE STRING,
CHECKAUTH TYPE STRING,
MAXCNT TYPE STRING,
UNLIMITED_IND TYPE STRING,
LAST_PAT_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNPATFIND_IN_FW_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_RNPATFIND_IN_FW_STR-KEY_DATA sy-vline 
WA_RNPATFIND_IN_FW_STR-MANDT sy-vline 
WA_RNPATFIND_IN_FW_STR-GUID sy-vline 
WA_RNPATFIND_IN_FW_STR-EVENT sy-vline 
WA_RNPATFIND_IN_FW_STR-APPLK sy-vline 
WA_RNPATFIND_IN_FW_STR-EINRI sy-vline 
WA_RNPATFIND_IN_FW_STR-FALNR sy-vline 
WA_RNPATFIND_IN_FW_STR-LFDNR sy-vline 
WA_RNPATFIND_IN_FW_STR-PATNR sy-vline 
WA_RNPATFIND_IN_FW_STR-EXTNR sy-vline 
WA_RNPATFIND_IN_FW_STR-KOSTR sy-vline 
WA_RNPATFIND_IN_FW_STR-COMNUM sy-vline 
WA_RNPATFIND_IN_FW_STR-KEY1 sy-vline 
WA_RNPATFIND_IN_FW_STR-KEY2 sy-vline 
WA_RNPATFIND_IN_FW_STR-KEY3 sy-vline 
WA_RNPATFIND_IN_FW_STR-KEY4 sy-vline 
WA_RNPATFIND_IN_FW_STR-KEY5 sy-vline 
WA_RNPATFIND_IN_FW_STR-KEY6 sy-vline 
WA_RNPATFIND_IN_FW_STR-ERDAT sy-vline 
WA_RNPATFIND_IN_FW_STR-ERTIM sy-vline 
WA_RNPATFIND_IN_FW_STR-ERUSR sy-vline 
WA_RNPATFIND_IN_FW_STR-TA sy-vline 
WA_RNPATFIND_IN_FW_STR-DATA_TYPE sy-vline 
WA_RNPATFIND_IN_FW_STR-REF_GUID sy-vline 
WA_RNPATFIND_IN_FW_STR-SEARCH_DATA sy-vline 
WA_RNPATFIND_IN_FW_STR-EINRI sy-vline 
WA_RNPATFIND_IN_FW_STR-PATNR sy-vline 
WA_RNPATFIND_IN_FW_STR-NNAME sy-vline 
WA_RNPATFIND_IN_FW_STR-VNAME sy-vline 
WA_RNPATFIND_IN_FW_STR-GBNAM sy-vline 
WA_RNPATFIND_IN_FW_STR-GBDATV sy-vline 
WA_RNPATFIND_IN_FW_STR-GBDATB sy-vline 
WA_RNPATFIND_IN_FW_STR-GSCHLE sy-vline 
WA_RNPATFIND_IN_FW_STR-RVNUM sy-vline 
WA_RNPATFIND_IN_FW_STR-EXTNR sy-vline 
WA_RNPATFIND_IN_FW_STR-PASSTY sy-vline 
WA_RNPATFIND_IN_FW_STR-PASNR sy-vline 
WA_RNPATFIND_IN_FW_STR-ADDR_SELECTION sy-vline 
WA_RNPATFIND_IN_FW_STR-LAND sy-vline 
WA_RNPATFIND_IN_FW_STR-LAND_NAME sy-vline 
WA_RNPATFIND_IN_FW_STR-REGIO sy-vline 
WA_RNPATFIND_IN_FW_STR-ORT sy-vline 
WA_RNPATFIND_IN_FW_STR-ORT2 sy-vline 
WA_RNPATFIND_IN_FW_STR-PSTLZ sy-vline 
WA_RNPATFIND_IN_FW_STR-STRAZ sy-vline 
WA_RNPATFIND_IN_FW_STR-STRAS sy-vline 
WA_RNPATFIND_IN_FW_STR-BUILD sy-vline 
WA_RNPATFIND_IN_FW_STR-FLOOR sy-vline 
WA_RNPATFIND_IN_FW_STR-ROOM sy-vline 
WA_RNPATFIND_IN_FW_STR-PFACH sy-vline 
WA_RNPATFIND_IN_FW_STR-SPHON sy-vline 
WA_RNPATFIND_IN_FW_STR-READ_NPAP sy-vline 
WA_RNPATFIND_IN_FW_STR-PFOERTNER sy-vline 
WA_RNPATFIND_IN_FW_STR-CHECKAUTH sy-vline 
WA_RNPATFIND_IN_FW_STR-MAXCNT sy-vline 
WA_RNPATFIND_IN_FW_STR-UNLIMITED_IND sy-vline 
WA_RNPATFIND_IN_FW_STR-LAST_PAT_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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