ABAP Select data from SAP table ROIO_RT_RTCTR_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIO_RT_RTCTR_DATA
*  INTO TABLE @DATA(IT_ROIO_RT_RTCTR_DATA2).
*--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_ROIO_RT_RTCTR_DATA INDEX 1 INTO DATA(WA_ROIO_RT_RTCTR_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIO_RT_RTCTR_DATA>-TKNUM = 1.
<ROIO_RT_RTCTR_DATA>-EXIDV = 1.
<ROIO_RT_RTCTR_DATA>-VENUM = 1.
<ROIO_RT_RTCTR_DATA>-CNTNR_TYP_CD = 1.
<ROIO_RT_RTCTR_DATA>-CNTNR_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIO_RT_RTCTR_DATA-VHILM, sy-vline,
  WA_ROIO_RT_RTCTR_DATA-BRGEW, sy-vline,
  WA_ROIO_RT_RTCTR_DATA-NTGEW, sy-vline,
  WA_ROIO_RT_RTCTR_DATA-MAGEW, sy-vline,
  WA_ROIO_RT_RTCTR_DATA-TARAG, sy-vline,
  WA_ROIO_RT_RTCTR_DATA-GEWEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIO_RT_RTCTR_DATA 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_ROIO_RT_RTCTR_DATA 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_ROIO_RT_RTCTR_DATA INTO WA_ROIO_RT_RTCTR_DATA.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field VHILM
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTCTR_DATA-VHILM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTCTR_DATA-VHILM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTCTR_DATA-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTCTR_DATA-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEABM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTCTR_DATA-MEABM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTCTR_DATA-MEABM.
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_ROIO_RT_RTCTR_DATA_STR, 
TKNUM TYPE STRING,
EXIDV TYPE STRING,
VENUM TYPE STRING,
CNTNR_TYP_CD TYPE STRING,
CNTNR_ID TYPE STRING,
VHILM TYPE STRING,
BRGEW TYPE STRING,
NTGEW TYPE STRING,
MAGEW TYPE STRING,
TARAG TYPE STRING,
GEWEI TYPE STRING,
LAENG TYPE STRING,
BREIT TYPE STRING,
HOEHE TYPE STRING,
MEABM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIO_RT_RTCTR_DATA_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_ROIO_RT_RTCTR_DATA_STR-TKNUM sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-EXIDV sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-VENUM sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-CNTNR_TYP_CD sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-CNTNR_ID sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-VHILM sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-BRGEW sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-NTGEW sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-MAGEW sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-TARAG sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-GEWEI sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-LAENG sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-BREIT sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-HOEHE sy-vline 
WA_ROIO_RT_RTCTR_DATA_STR-MEABM sy-vline      INTO ld_text SEPARATED BY SPACE.

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