ABAP Select data from SAP table RNAPP16 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNAPP16 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 RNAPP16. 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 RNAPP16 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_RNAPP16 TYPE STANDARD TABLE OF RNAPP16,
      WA_RNAPP16 TYPE RNAPP16,
      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: <RNAPP16> TYPE RNAPP16.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNAPP16.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNAPP16
  INTO TABLE IT_RNAPP16.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNAPP16
*  INTO TABLE @DATA(IT_RNAPP162).
*--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_RNAPP16 INDEX 1 INTO DATA(WA_RNAPP162).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNAPP16 ASSIGNING <RNAPP16>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNAPP16>-APPNO = 1.
<RNAPP16>-UNITID = 1.
<RNAPP16>-TABROW = 1.
<RNAPP16>-MARK = 1.
<RNAPP16>-EINRI = 1.

ENDLOOP.

LOOP AT IT_RNAPP16 INTO WA_RNAPP16.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNAPP16-PERNR, sy-vline,
  WA_RNAPP16-ROOM, sy-vline,
  WA_RNAPP16-SRCHD, sy-vline,
  WA_RNAPP16-SRCHTFROM, sy-vline,
  WA_RNAPP16-SRCHTTO, sy-vline,
  WA_RNAPP16-TO_WEEK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNAPP16 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_RNAPP16 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_RNAPP16 INTO WA_RNAPP16.


*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_RNAPP16-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PERNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-PERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-PERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ROOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-ROOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-ROOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ATTOU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-ATTOU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-ATTOU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ATTFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-ATTFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-ATTFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FACHR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-FACHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-FACHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-RANK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-RANK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SRVPID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-SRVPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-SRVPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CATID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-CATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-CATID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ROLTPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNAPP16-ROLTPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNAPP16-ROLTPE.
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_RNAPP16_STR, 
APPNO TYPE STRING,
UNITID TYPE STRING,
TABROW TYPE STRING,
MARK TYPE STRING,
EINRI TYPE STRING,
PERNR TYPE STRING,
ROOM TYPE STRING,
SRCHD TYPE STRING,
SRCHTFROM TYPE STRING,
SRCHTTO TYPE STRING,
TO_WEEK TYPE STRING,
ATTOU TYPE STRING,
ATTFA TYPE STRING,
FACHR TYPE STRING,
RANK TYPE STRING,
DSPTY TYPE STRING,
SRCHGRP TYPE STRING,
SRCHOVB TYPE STRING,
FIRSTV TYPE STRING,
FOLLOW_UP TYPE STRING,
EXCL_MON_AM TYPE STRING,
EXCL_TUE_AM TYPE STRING,
EXCL_WED_AM TYPE STRING,
EXCL_THU_AM TYPE STRING,
EXCL_FRI_AM TYPE STRING,
EXCL_SAT_AM TYPE STRING,
EXCL_SUN_AM TYPE STRING,
EXCL_MON_PM TYPE STRING,
EXCL_TUE_PM TYPE STRING,
EXCL_WED_PM TYPE STRING,
EXCL_THU_PM TYPE STRING,
EXCL_FRI_PM TYPE STRING,
EXCL_SAT_PM TYPE STRING,
EXCL_SUN_PM TYPE STRING,
EXCL_VORM TYPE STRING,
EXCL_NACHM TYPE STRING,
DISTMIN TYPE STRING,
DISTMAX TYPE STRING,
DISTUNIT TYPE STRING,
APP_CONSTR_OBJ TYPE STRING,
SRVPID TYPE STRING,
CATID TYPE STRING,
GPART TYPE STRING,
ROLTPE TYPE STRING,
PATKZ TYPE STRING,
ACCTY TYPE STRING,
PRIOCL TYPE STRING,
DURMIN TYPE STRING,
DURMIN_X TYPE STRING,
TREATM_FIXED TYPE STRING,
DURSRCH TYPE STRING,
SRVP_OBJ TYPE STRING,
REPNO TYPE STRING,
REPDAY TYPE STRING,
REPWEEK TYPE STRING,
REPMONTH TYPE STRING,
CYCLE TYPE STRING,
CYCLEUNIT TYPE STRING,
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,
RT_DSPTY TYPE STRING,
RT_ATTOU TYPE STRING,
RT_POB TYPE STRING,
RT_SRVP_OBJ TYPE STRING,
ACCTY_DEFAULT TYPE STRING,
PRIOCL_DEFAULT TYPE STRING,
DURMIN_DEFAULT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNAPP16_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_RNAPP16_STR-APPNO sy-vline 
WA_RNAPP16_STR-UNITID sy-vline 
WA_RNAPP16_STR-TABROW sy-vline 
WA_RNAPP16_STR-MARK sy-vline 
WA_RNAPP16_STR-EINRI sy-vline 
WA_RNAPP16_STR-PERNR sy-vline 
WA_RNAPP16_STR-ROOM sy-vline 
WA_RNAPP16_STR-SRCHD sy-vline 
WA_RNAPP16_STR-SRCHTFROM sy-vline 
WA_RNAPP16_STR-SRCHTTO sy-vline 
WA_RNAPP16_STR-TO_WEEK sy-vline 
WA_RNAPP16_STR-ATTOU sy-vline 
WA_RNAPP16_STR-ATTFA sy-vline 
WA_RNAPP16_STR-FACHR sy-vline 
WA_RNAPP16_STR-RANK sy-vline 
WA_RNAPP16_STR-DSPTY sy-vline 
WA_RNAPP16_STR-SRCHGRP sy-vline 
WA_RNAPP16_STR-SRCHOVB sy-vline 
WA_RNAPP16_STR-FIRSTV sy-vline 
WA_RNAPP16_STR-FOLLOW_UP sy-vline 
WA_RNAPP16_STR-EXCL_MON_AM sy-vline 
WA_RNAPP16_STR-EXCL_TUE_AM sy-vline 
WA_RNAPP16_STR-EXCL_WED_AM sy-vline 
WA_RNAPP16_STR-EXCL_THU_AM sy-vline 
WA_RNAPP16_STR-EXCL_FRI_AM sy-vline 
WA_RNAPP16_STR-EXCL_SAT_AM sy-vline 
WA_RNAPP16_STR-EXCL_SUN_AM sy-vline 
WA_RNAPP16_STR-EXCL_MON_PM sy-vline 
WA_RNAPP16_STR-EXCL_TUE_PM sy-vline 
WA_RNAPP16_STR-EXCL_WED_PM sy-vline 
WA_RNAPP16_STR-EXCL_THU_PM sy-vline 
WA_RNAPP16_STR-EXCL_FRI_PM sy-vline 
WA_RNAPP16_STR-EXCL_SAT_PM sy-vline 
WA_RNAPP16_STR-EXCL_SUN_PM sy-vline 
WA_RNAPP16_STR-EXCL_VORM sy-vline 
WA_RNAPP16_STR-EXCL_NACHM sy-vline 
WA_RNAPP16_STR-DISTMIN sy-vline 
WA_RNAPP16_STR-DISTMAX sy-vline 
WA_RNAPP16_STR-DISTUNIT sy-vline 
WA_RNAPP16_STR-APP_CONSTR_OBJ sy-vline 
WA_RNAPP16_STR-SRVPID sy-vline 
WA_RNAPP16_STR-CATID sy-vline 
WA_RNAPP16_STR-GPART sy-vline 
WA_RNAPP16_STR-ROLTPE sy-vline 
WA_RNAPP16_STR-PATKZ sy-vline 
WA_RNAPP16_STR-ACCTY sy-vline 
WA_RNAPP16_STR-PRIOCL sy-vline 
WA_RNAPP16_STR-DURMIN sy-vline 
WA_RNAPP16_STR-DURMIN_X sy-vline 
WA_RNAPP16_STR-TREATM_FIXED sy-vline 
WA_RNAPP16_STR-DURSRCH sy-vline 
WA_RNAPP16_STR-SRVP_OBJ sy-vline 
WA_RNAPP16_STR-REPNO sy-vline 
WA_RNAPP16_STR-REPDAY sy-vline 
WA_RNAPP16_STR-REPWEEK sy-vline 
WA_RNAPP16_STR-REPMONTH sy-vline 
WA_RNAPP16_STR-CYCLE sy-vline 
WA_RNAPP16_STR-CYCLEUNIT sy-vline 
WA_RNAPP16_STR-SRCHH sy-vline 
WA_RNAPP16_STR-INPPD sy-vline 
WA_RNAPP16_STR-INPAD sy-vline 
WA_RNAPP16_STR-ALTTO sy-vline 
WA_RNAPP16_STR-ALTDY sy-vline 
WA_RNAPP16_STR-ALTHO sy-vline 
WA_RNAPP16_STR-CALSEL sy-vline 
WA_RNAPP16_STR-LISTSEL sy-vline 
WA_RNAPP16_STR-SORTDT sy-vline 
WA_RNAPP16_STR-SORTALT sy-vline 
WA_RNAPP16_STR-PROFILE sy-vline 
WA_RNAPP16_STR-VIEWID sy-vline 
WA_RNAPP16_STR-VIEWTYPE sy-vline 
WA_RNAPP16_STR-EXTBOOK sy-vline 
WA_RNAPP16_STR-MULTDAYS sy-vline 
WA_RNAPP16_STR-SRVBAS sy-vline 
WA_RNAPP16_STR-RT_DSPTY sy-vline 
WA_RNAPP16_STR-RT_ATTOU sy-vline 
WA_RNAPP16_STR-RT_POB sy-vline 
WA_RNAPP16_STR-RT_SRVP_OBJ sy-vline 
WA_RNAPP16_STR-ACCTY_DEFAULT sy-vline 
WA_RNAPP16_STR-PRIOCL_DEFAULT sy-vline 
WA_RNAPP16_STR-DURMIN_DEFAULT sy-vline      INTO ld_text SEPARATED BY SPACE.

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