ABAP Select data from SAP table RNPATAPP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNPATAPP
*  INTO TABLE @DATA(IT_RNPATAPP2).
*--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_RNPATAPP INDEX 1 INTO DATA(WA_RNPATAPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNPATAPP>-STORN = 1.
<RNPATAPP>-ICON = 1.
<RNPATAPP>-BWIDT = 1.
<RNPATAPP>-BWIZT = 1.
<RNPATAPP>-DSPTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNPATAPP-ORGPF, sy-vline,
  WA_RNPATAPP-DOC_NAME, sy-vline,
  WA_RNPATAPP-ZIMMR, sy-vline,
  WA_RNPATAPP-FALNR, sy-vline,
  WA_RNPATAPP-DAUER, sy-vline,
  WA_RNPATAPP-EINRI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNPATAPP 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_RNPATAPP 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_RNPATAPP INTO WA_RNPATAPP.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field FACHR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPATAPP-FACHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPATAPP-FACHR.
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_RNPATAPP_STR, 
STORN TYPE STRING,
ICON TYPE STRING,
BWIDT TYPE STRING,
BWIZT TYPE STRING,
DSPTY TYPE STRING,
ORGPF TYPE STRING,
DOC_NAME TYPE STRING,
ZIMMR TYPE STRING,
FALNR TYPE STRING,
DAUER TYPE STRING,
EINRI TYPE STRING,
POBNR TYPE STRING,
ORGFA TYPE STRING,
PATNR TYPE STRING,
NO_TC_ICON TYPE STRING,
EXTNR TYPE STRING,
LFDNR TYPE STRING,
BWART TYPE STRING,
PELOC TYPE STRING,
BARZT TYPE STRING,
STATUS_EX TYPE STRING,
TMNID TYPE STRING,
LNRAPP TYPE STRING,
PZIFF TYPE STRING,
FZIFF TYPE STRING,
KRZAN TYPE STRING,
STATUS TYPE STRING,
VISTY TYPE STRING,
BEKAT TYPE STRING,
CLASS TYPE STRING,
FACHR TYPE STRING,
STOID TYPE STRING,
STOTX TYPE STRING,
KZTXT TYPE STRING,
AUTH_DSP TYPE STRING,
AUTH_INS TYPE STRING,
AUTH_UPD TYPE STRING,
AUTH_DEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNPATAPP_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_RNPATAPP_STR-STORN sy-vline 
WA_RNPATAPP_STR-ICON sy-vline 
WA_RNPATAPP_STR-BWIDT sy-vline 
WA_RNPATAPP_STR-BWIZT sy-vline 
WA_RNPATAPP_STR-DSPTY sy-vline 
WA_RNPATAPP_STR-ORGPF sy-vline 
WA_RNPATAPP_STR-DOC_NAME sy-vline 
WA_RNPATAPP_STR-ZIMMR sy-vline 
WA_RNPATAPP_STR-FALNR sy-vline 
WA_RNPATAPP_STR-DAUER sy-vline 
WA_RNPATAPP_STR-EINRI sy-vline 
WA_RNPATAPP_STR-POBNR sy-vline 
WA_RNPATAPP_STR-ORGFA sy-vline 
WA_RNPATAPP_STR-PATNR sy-vline 
WA_RNPATAPP_STR-NO_TC_ICON sy-vline 
WA_RNPATAPP_STR-EXTNR sy-vline 
WA_RNPATAPP_STR-LFDNR sy-vline 
WA_RNPATAPP_STR-BWART sy-vline 
WA_RNPATAPP_STR-PELOC sy-vline 
WA_RNPATAPP_STR-BARZT sy-vline 
WA_RNPATAPP_STR-STATUS_EX sy-vline 
WA_RNPATAPP_STR-TMNID sy-vline 
WA_RNPATAPP_STR-LNRAPP sy-vline 
WA_RNPATAPP_STR-PZIFF sy-vline 
WA_RNPATAPP_STR-FZIFF sy-vline 
WA_RNPATAPP_STR-KRZAN sy-vline 
WA_RNPATAPP_STR-STATUS sy-vline 
WA_RNPATAPP_STR-VISTY sy-vline 
WA_RNPATAPP_STR-BEKAT sy-vline 
WA_RNPATAPP_STR-CLASS sy-vline 
WA_RNPATAPP_STR-FACHR sy-vline 
WA_RNPATAPP_STR-STOID sy-vline 
WA_RNPATAPP_STR-STOTX sy-vline 
WA_RNPATAPP_STR-KZTXT sy-vline 
WA_RNPATAPP_STR-AUTH_DSP sy-vline 
WA_RNPATAPP_STR-AUTH_INS sy-vline 
WA_RNPATAPP_STR-AUTH_UPD sy-vline 
WA_RNPATAPP_STR-AUTH_DEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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