ABAP Select data from SAP table RNAPP2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNAPP2 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 RNAPP2. 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 RNAPP2 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_RNAPP2 TYPE STANDARD TABLE OF RNAPP2,
      WA_RNAPP2 TYPE RNAPP2,
      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: <RNAPP2> TYPE RNAPP2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNAPP2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNAPP2
  INTO TABLE IT_RNAPP2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNAPP2
*  INTO TABLE @DATA(IT_RNAPP22).
*--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_RNAPP2 INDEX 1 INTO DATA(WA_RNAPP22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNAPP2 ASSIGNING <RNAPP2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNAPP2>-MARKFIELD = 1.
<RNAPP2>-EINRI = 1.
<RNAPP2>-BWIDT = 1.
<RNAPP2>-BWIZT = 1.
<RNAPP2>-PATNR = 1.

ENDLOOP.

LOOP AT IT_RNAPP2 INTO WA_RNAPP2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNAPP2-PZIFF, sy-vline,
  WA_RNAPP2-PAPID, sy-vline,
  WA_RNAPP2-EXTNR, sy-vline,
  WA_RNAPP2-FALNR, sy-vline,
  WA_RNAPP2-FZIFF, sy-vline,
  WA_RNAPP2-FALAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNAPP2 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_RNAPP2 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_RNAPP2 INTO WA_RNAPP2.


*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_RNAPP2-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PAPID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-PAPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-PAPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TMNID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-TMNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-TMNID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-REFID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-REFID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TMNOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-TMNOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-TMNOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRAPP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-LNRAPP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-LNRAPP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-ORGFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-ORGFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-ORGPF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-ORGPF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEKAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-BEKAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-BEKAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BARZT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-BARZT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-BARZT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FACHR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-FACHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-FACHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PELOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-PELOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-PELOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZIMMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-ZIMMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-ZIMMR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CLASS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-CLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-CLASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP2-UARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP2-UARNR.
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_RNAPP2_STR, 
MARKFIELD TYPE STRING,
EINRI TYPE STRING,
BWIDT TYPE STRING,
BWIZT TYPE STRING,
PATNR TYPE STRING,
PZIFF TYPE STRING,
PAPID TYPE STRING,
EXTNR TYPE STRING,
FALNR TYPE STRING,
FZIFF TYPE STRING,
FALAR TYPE STRING,
LFDNR TYPE STRING,
TMNID TYPE STRING,
REFID TYPE STRING,
TMNOE TYPE STRING,
TMNDT TYPE STRING,
TMNZT TYPE STRING,
TMNDR TYPE STRING,
LNRAPP TYPE STRING,
ORGFA TYPE STRING,
ORGPF TYPE STRING,
BEWTY TYPE STRING,
BWART TYPE STRING,
BEKAT TYPE STRING,
DSPTY TYPE STRING,
VISTY TYPE STRING,
DAUER TYPE STRING,
BARZT TYPE STRING,
FACHR TYPE STRING,
PELOC TYPE STRING,
ZIMMR TYPE STRING,
KZTXT TYPE STRING,
LGTXT TYPE STRING,
STATUS TYPE STRING,
STATUS_EX TYPE STRING,
GBDAT TYPE STRING,
GSCHL TYPE STRING,
PNAMC TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
NNAMS TYPE STRING,
VNAMS TYPE STRING,
GBNAM TYPE STRING,
GBNAS TYPE STRING,
TITEL TYPE STRING,
NAMZU TYPE STRING,
VORSW TYPE STRING,
VIPKZ TYPE STRING,
TODKZ TYPE STRING,
RISKF TYPE STRING,
TELF1 TYPE STRING,
CLASS TYPE STRING,
STOID TYPE STRING,
PRIV TYPE STRING,
BHS TYPE STRING,
NOTAN TYPE STRING,
KRZAN TYPE STRING,
UARNR TYPE STRING,
BWGR1 TYPE STRING,
BWGR2 TYPE STRING,
ENDPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNAPP2_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_RNAPP2_STR-MARKFIELD sy-vline 
WA_RNAPP2_STR-EINRI sy-vline 
WA_RNAPP2_STR-BWIDT sy-vline 
WA_RNAPP2_STR-BWIZT sy-vline 
WA_RNAPP2_STR-PATNR sy-vline 
WA_RNAPP2_STR-PZIFF sy-vline 
WA_RNAPP2_STR-PAPID sy-vline 
WA_RNAPP2_STR-EXTNR sy-vline 
WA_RNAPP2_STR-FALNR sy-vline 
WA_RNAPP2_STR-FZIFF sy-vline 
WA_RNAPP2_STR-FALAR sy-vline 
WA_RNAPP2_STR-LFDNR sy-vline 
WA_RNAPP2_STR-TMNID sy-vline 
WA_RNAPP2_STR-REFID sy-vline 
WA_RNAPP2_STR-TMNOE sy-vline 
WA_RNAPP2_STR-TMNDT sy-vline 
WA_RNAPP2_STR-TMNZT sy-vline 
WA_RNAPP2_STR-TMNDR sy-vline 
WA_RNAPP2_STR-LNRAPP sy-vline 
WA_RNAPP2_STR-ORGFA sy-vline 
WA_RNAPP2_STR-ORGPF sy-vline 
WA_RNAPP2_STR-BEWTY sy-vline 
WA_RNAPP2_STR-BWART sy-vline 
WA_RNAPP2_STR-BEKAT sy-vline 
WA_RNAPP2_STR-DSPTY sy-vline 
WA_RNAPP2_STR-VISTY sy-vline 
WA_RNAPP2_STR-DAUER sy-vline 
WA_RNAPP2_STR-BARZT sy-vline 
WA_RNAPP2_STR-FACHR sy-vline 
WA_RNAPP2_STR-PELOC sy-vline 
WA_RNAPP2_STR-ZIMMR sy-vline 
WA_RNAPP2_STR-KZTXT sy-vline 
WA_RNAPP2_STR-LGTXT sy-vline 
WA_RNAPP2_STR-STATUS sy-vline 
WA_RNAPP2_STR-STATUS_EX sy-vline 
WA_RNAPP2_STR-GBDAT sy-vline 
WA_RNAPP2_STR-GSCHL sy-vline 
WA_RNAPP2_STR-PNAMC sy-vline 
WA_RNAPP2_STR-NNAME sy-vline 
WA_RNAPP2_STR-VNAME sy-vline 
WA_RNAPP2_STR-NNAMS sy-vline 
WA_RNAPP2_STR-VNAMS sy-vline 
WA_RNAPP2_STR-GBNAM sy-vline 
WA_RNAPP2_STR-GBNAS sy-vline 
WA_RNAPP2_STR-TITEL sy-vline 
WA_RNAPP2_STR-NAMZU sy-vline 
WA_RNAPP2_STR-VORSW sy-vline 
WA_RNAPP2_STR-VIPKZ sy-vline 
WA_RNAPP2_STR-TODKZ sy-vline 
WA_RNAPP2_STR-RISKF sy-vline 
WA_RNAPP2_STR-TELF1 sy-vline 
WA_RNAPP2_STR-CLASS sy-vline 
WA_RNAPP2_STR-STOID sy-vline 
WA_RNAPP2_STR-PRIV sy-vline 
WA_RNAPP2_STR-BHS sy-vline 
WA_RNAPP2_STR-NOTAN sy-vline 
WA_RNAPP2_STR-KRZAN sy-vline 
WA_RNAPP2_STR-UARNR sy-vline 
WA_RNAPP2_STR-BWGR1 sy-vline 
WA_RNAPP2_STR-BWGR2 sy-vline 
WA_RNAPP2_STR-ENDPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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