ABAP Select data from SAP table RNAPP10 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNAPP10 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 RNAPP10. 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 RNAPP10 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_RNAPP10 TYPE STANDARD TABLE OF RNAPP10,
      WA_RNAPP10 TYPE RNAPP10,
      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: <RNAPP10> TYPE RNAPP10.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNAPP10.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNAPP10
  INTO TABLE IT_RNAPP10.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNAPP10
*  INTO TABLE @DATA(IT_RNAPP102).
*--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_RNAPP10 INDEX 1 INTO DATA(WA_RNAPP102).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNAPP10 ASSIGNING <RNAPP10>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNAPP10>-SRCHH = 1.
<RNAPP10>-INPPD = 1.
<RNAPP10>-INPAD = 1.
<RNAPP10>-ALTTO = 1.
<RNAPP10>-ALTDY = 1.

ENDLOOP.

LOOP AT IT_RNAPP10 INTO WA_RNAPP10.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNAPP10-ALTHO, sy-vline,
  WA_RNAPP10-CALSEL, sy-vline,
  WA_RNAPP10-LISTSEL, sy-vline,
  WA_RNAPP10-SORTDT, sy-vline,
  WA_RNAPP10-SORTALT, sy-vline,
  WA_RNAPP10-PROFILE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNAPP10 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_RNAPP10 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_RNAPP10 INTO WA_RNAPP10.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RNAPP10_STR, 
SRCHH TYPE STRING,
INPPD TYPE STRING,
INPAD TYPE STRING,
ALTTO TYPE STRING,
ALTDY TYPE STRING,
ALTHO TYPE STRING,
CALSEL TYPE STRING,
LISTSEL TYPE STRING,
SORTDT TYPE STRING,
SORTALT TYPE STRING,
PROFILE TYPE STRING,
VIEWID TYPE STRING,
VIEWTYPE TYPE STRING,
EXTBOOK TYPE STRING,
MULTDAYS TYPE STRING,
SRVBAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNAPP10_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_RNAPP10_STR-SRCHH sy-vline 
WA_RNAPP10_STR-INPPD sy-vline 
WA_RNAPP10_STR-INPAD sy-vline 
WA_RNAPP10_STR-ALTTO sy-vline 
WA_RNAPP10_STR-ALTDY sy-vline 
WA_RNAPP10_STR-ALTHO sy-vline 
WA_RNAPP10_STR-CALSEL sy-vline 
WA_RNAPP10_STR-LISTSEL sy-vline 
WA_RNAPP10_STR-SORTDT sy-vline 
WA_RNAPP10_STR-SORTALT sy-vline 
WA_RNAPP10_STR-PROFILE sy-vline 
WA_RNAPP10_STR-VIEWID sy-vline 
WA_RNAPP10_STR-VIEWTYPE sy-vline 
WA_RNAPP10_STR-EXTBOOK sy-vline 
WA_RNAPP10_STR-MULTDAYS sy-vline 
WA_RNAPP10_STR-SRVBAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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