ABAP Select data from SAP table ROIO_RT_RTITM 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_RTITM 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_RTITM. 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_RTITM 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_RTITM TYPE STANDARD TABLE OF ROIO_RT_RTITM,
      WA_ROIO_RT_RTITM TYPE ROIO_RT_RTITM,
      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_RTITM> TYPE ROIO_RT_RTITM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIO_RT_RTITM
*  INTO TABLE @DATA(IT_ROIO_RT_RTITM2).
*--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_RTITM INDEX 1 INTO DATA(WA_ROIO_RT_RTITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIO_RT_RTITM>-DOCNR = 1.
<ROIO_RT_RTITM>-RECTY = 1.
<ROIO_RT_RTITM>-DOCLN = 1.
<ROIO_RT_RTITM>-KUNWE = 1.
<ROIO_RT_RTITM>-KUNNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIO_RT_RTITM-LIFNR, sy-vline,
  WA_ROIO_RT_RTITM-SGTXT, sy-vline,
  WA_ROIO_RT_RTITM-IT_RESP, sy-vline,
  WA_ROIO_RT_RTITM-IT_STATUS_CD, sy-vline,
  WA_ROIO_RT_RTITM-IT_ACTION, sy-vline,
  WA_ROIO_RT_RTITM-IT_STEP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIO_RT_RTITM 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_RTITM 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_RTITM INTO WA_ROIO_RT_RTITM.


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

*Conversion exit ALPHA, internal->external for field KUNWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTITM-KUNWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTITM-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_RTITM-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTITM-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_RTITM-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTITM-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_RTITM-IT_STATUS_CD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTITM-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_RTITM-OBJTY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTITM-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_RTITM_STR, 
DOCNR TYPE STRING,
RECTY TYPE STRING,
DOCLN TYPE STRING,
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,
LTEXT TYPE STRING,
TXTLN TYPE STRING,
TXTCT TYPE STRING,
TXTKZ TYPE STRING,
ENQKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIO_RT_RTITM_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_RTITM_STR-DOCNR sy-vline 
WA_ROIO_RT_RTITM_STR-RECTY sy-vline 
WA_ROIO_RT_RTITM_STR-DOCLN sy-vline 
WA_ROIO_RT_RTITM_STR-KUNWE sy-vline 
WA_ROIO_RT_RTITM_STR-KUNNR sy-vline 
WA_ROIO_RT_RTITM_STR-LIFNR sy-vline 
WA_ROIO_RT_RTITM_STR-SGTXT sy-vline 
WA_ROIO_RT_RTITM_STR-IT_RESP sy-vline 
WA_ROIO_RT_RTITM_STR-IT_STATUS_CD sy-vline 
WA_ROIO_RT_RTITM_STR-IT_ACTION sy-vline 
WA_ROIO_RT_RTITM_STR-IT_STEP sy-vline 
WA_ROIO_RT_RTITM_STR-IT_XDELT sy-vline 
WA_ROIO_RT_RTITM_STR-IT_XBLCK sy-vline 
WA_ROIO_RT_RTITM_STR-IT_TLOCN sy-vline 
WA_ROIO_RT_RTITM_STR-IT_MISCI sy-vline 
WA_ROIO_RT_RTITM_STR-IT_XHOLD sy-vline 
WA_ROIO_RT_RTITM_STR-OBJTY_REF sy-vline 
WA_ROIO_RT_RTITM_STR-OBJID_REF sy-vline 
WA_ROIO_RT_RTITM_STR-LTEXT sy-vline 
WA_ROIO_RT_RTITM_STR-TXTLN sy-vline 
WA_ROIO_RT_RTITM_STR-TXTCT sy-vline 
WA_ROIO_RT_RTITM_STR-TXTKZ sy-vline 
WA_ROIO_RT_RTITM_STR-ENQKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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