ABAP Select data from SAP table ROIO_RT_RTCOM_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_RTCOM_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_RTCOM_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_RTCOM_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_RTCOM_DATA TYPE STANDARD TABLE OF ROIO_RT_RTCOM_DATA,
      WA_ROIO_RT_RTCOM_DATA TYPE ROIO_RT_RTCOM_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_RTCOM_DATA> TYPE ROIO_RT_RTCOM_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIO_RT_RTCOM_DATA
*  INTO TABLE @DATA(IT_ROIO_RT_RTCOM_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_RTCOM_DATA INDEX 1 INTO DATA(WA_ROIO_RT_RTCOM_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIO_RT_RTCOM_DATA>-KUNWE = 1.
<ROIO_RT_RTCOM_DATA>-KUNNR = 1.
<ROIO_RT_RTCOM_DATA>-LIFNR = 1.
<ROIO_RT_RTCOM_DATA>-SGTXT = 1.
<ROIO_RT_RTCOM_DATA>-IT_RESP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIO_RT_RTCOM_DATA-IT_STATUS_CD, sy-vline,
  WA_ROIO_RT_RTCOM_DATA-IT_ACTION, sy-vline,
  WA_ROIO_RT_RTCOM_DATA-IT_STEP, sy-vline,
  WA_ROIO_RT_RTCOM_DATA-IT_XDELT, sy-vline,
  WA_ROIO_RT_RTCOM_DATA-IT_XBLCK, sy-vline,
  WA_ROIO_RT_RTCOM_DATA-IT_TLOCN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIO_RT_RTCOM_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_RTCOM_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_RTCOM_DATA INTO WA_ROIO_RT_RTCOM_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 KUNWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTCOM_DATA-KUNWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTCOM_DATA-KUNWE.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field OBJTY_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTCOM_DATA-OBJTY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTCOM_DATA-OBJTY_REF.
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_RTCOM_DATA_STR, 
KUNWE TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
SGTXT TYPE STRING,
IT_RESP TYPE STRING,
IT_STATUS_CD TYPE STRING,
IT_ACTION TYPE STRING,
IT_STEP TYPE STRING,
IT_XDELT TYPE STRING,
IT_XBLCK TYPE STRING,
IT_TLOCN TYPE STRING,
IT_MISCI TYPE STRING,
IT_XHOLD TYPE STRING,
OBJTY_REF TYPE STRING,
OBJID_REF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIO_RT_RTCOM_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_RTCOM_DATA_STR-KUNWE sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-KUNNR sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-LIFNR sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-SGTXT sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_RESP sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_STATUS_CD sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_ACTION sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_STEP sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_XDELT sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_XBLCK sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_TLOCN sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_MISCI sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-IT_XHOLD sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-OBJTY_REF sy-vline 
WA_ROIO_RT_RTCOM_DATA_STR-OBJID_REF sy-vline      INTO ld_text SEPARATED BY SPACE.

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