ABAP Select data from SAP table RNAPP15 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNAPP15 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 RNAPP15. 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 RNAPP15 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_RNAPP15 TYPE STANDARD TABLE OF RNAPP15,
      WA_RNAPP15 TYPE RNAPP15,
      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: <RNAPP15> TYPE RNAPP15.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNAPP15.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNAPP15
  INTO TABLE IT_RNAPP15.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNAPP15
*  INTO TABLE @DATA(IT_RNAPP152).
*--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_RNAPP15 INDEX 1 INTO DATA(WA_RNAPP152).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNAPP15 ASSIGNING <RNAPP15>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNAPP15>-POBNR = 1.
<RNAPP15>-KWNO = 1.
<RNAPP15>-WEEKDAY = 1.
<RNAPP15>-BEGYEAR = 1.
<RNAPP15>-STARTTIME = 1.

ENDLOOP.

LOOP AT IT_RNAPP15 INTO WA_RNAPP15.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNAPP15-ENDTIME, sy-vline,
  WA_RNAPP15-DSPTY, sy-vline,
  WA_RNAPP15-DSPTY_PERIOD, sy-vline,
  WA_RNAPP15-ENDYEAR, sy-vline,
  WA_RNAPP15-ORGPF, sy-vline,
  WA_RNAPP15-ORGFA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNAPP15 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_RNAPP15 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_RNAPP15 INTO WA_RNAPP15.


*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 GJAHR, internal->external for field BEGYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-BEGYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-BEGYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ENDYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-ENDYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-ENDYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-ORGPF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-ORGPF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-ORGFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-ORGFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FACHR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-FACHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-FACHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TPGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-TPGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-TPGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ROOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-ROOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-ROOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PERNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP15-PERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP15-PERNR.
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_RNAPP15_STR, 
POBNR TYPE STRING,
KWNO TYPE STRING,
WEEKDAY TYPE STRING,
BEGYEAR TYPE STRING,
STARTTIME TYPE STRING,
ENDTIME TYPE STRING,
DSPTY TYPE STRING,
DSPTY_PERIOD TYPE STRING,
ENDYEAR TYPE STRING,
ORGPF TYPE STRING,
ORGFA TYPE STRING,
FACHR TYPE STRING,
VISTY TYPE STRING,
TPGID TYPE STRING,
DAYPERIOD TYPE STRING,
MAXAPP TYPE STRING,
OVBNO TYPE STRING,
GRPAPP TYPE STRING,
EXTBOOK TYPE STRING,
APPTEXT TYPE STRING,
BREAK TYPE STRING,
WORKTIME TYPE STRING,
ROOM TYPE STRING,
PERNR TYPE STRING,
PRIOCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNAPP15_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_RNAPP15_STR-POBNR sy-vline 
WA_RNAPP15_STR-KWNO sy-vline 
WA_RNAPP15_STR-WEEKDAY sy-vline 
WA_RNAPP15_STR-BEGYEAR sy-vline 
WA_RNAPP15_STR-STARTTIME sy-vline 
WA_RNAPP15_STR-ENDTIME sy-vline 
WA_RNAPP15_STR-DSPTY sy-vline 
WA_RNAPP15_STR-DSPTY_PERIOD sy-vline 
WA_RNAPP15_STR-ENDYEAR sy-vline 
WA_RNAPP15_STR-ORGPF sy-vline 
WA_RNAPP15_STR-ORGFA sy-vline 
WA_RNAPP15_STR-FACHR sy-vline 
WA_RNAPP15_STR-VISTY sy-vline 
WA_RNAPP15_STR-TPGID sy-vline 
WA_RNAPP15_STR-DAYPERIOD sy-vline 
WA_RNAPP15_STR-MAXAPP sy-vline 
WA_RNAPP15_STR-OVBNO sy-vline 
WA_RNAPP15_STR-GRPAPP sy-vline 
WA_RNAPP15_STR-EXTBOOK sy-vline 
WA_RNAPP15_STR-APPTEXT sy-vline 
WA_RNAPP15_STR-BREAK sy-vline 
WA_RNAPP15_STR-WORKTIME sy-vline 
WA_RNAPP15_STR-ROOM sy-vline 
WA_RNAPP15_STR-PERNR sy-vline 
WA_RNAPP15_STR-PRIOCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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