ABAP Select data from SAP table ROIO_RT_RTMTL_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_RTMTL_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_RTMTL_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_RTMTL_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_RTMTL_DATA TYPE STANDARD TABLE OF ROIO_RT_RTMTL_DATA,
      WA_ROIO_RT_RTMTL_DATA TYPE ROIO_RT_RTMTL_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_RTMTL_DATA> TYPE ROIO_RT_RTMTL_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIO_RT_RTMTL_DATA
*  INTO TABLE @DATA(IT_ROIO_RT_RTMTL_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_RTMTL_DATA INDEX 1 INTO DATA(WA_ROIO_RT_RTMTL_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIO_RT_RTMTL_DATA>-MATNR = 1.
<ROIO_RT_RTMTL_DATA>-MENGE = 1.
<ROIO_RT_RTMTL_DATA>-MEINS = 1.
<ROIO_RT_RTMTL_DATA>-UMWRK = 1.
<ROIO_RT_RTMTL_DATA>-UMLGO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIO_RT_RTMTL_DATA-UMCHA, sy-vline,
  WA_ROIO_RT_RTMTL_DATA-CHARG, sy-vline,
  WA_ROIO_RT_RTMTL_DATA-EBELN, sy-vline,
  WA_ROIO_RT_RTMTL_DATA-EBELP, sy-vline,
  WA_ROIO_RT_RTMTL_DATA-KOKRS, sy-vline,
  WA_ROIO_RT_RTMTL_DATA-KOSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIO_RT_RTMTL_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_RTMTL_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_RTMTL_DATA INTO WA_ROIO_RT_RTMTL_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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTMTL_DATA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTMTL_DATA-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTMTL_DATA-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTMTL_DATA-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTMTL_DATA-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTMTL_DATA-VORNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field EVRTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RTMTL_DATA-EVRTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RTMTL_DATA-EVRTN.
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_RTMTL_DATA_STR, 
MATNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
UMCHA TYPE STRING,
CHARG TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
PS_PSP_PNR TYPE STRING,
AUFNR TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
EBELN_VL TYPE STRING,
EBELP_VL TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
EBELN_RD TYPE STRING,
EBELP_RD TYPE STRING,
VBELN_RD TYPE STRING,
POSNR_RD TYPE STRING,
EVRTN TYPE STRING,
EVRTP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIO_RT_RTMTL_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_RTMTL_DATA_STR-MATNR sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-MENGE sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-MEINS sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-UMWRK sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-UMLGO sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-UMCHA sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-CHARG sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EBELN sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EBELP sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-KOKRS sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-KOSTL sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-PS_PSP_PNR sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-AUFNR sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-NPLNR sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-VORNR sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EBELN_VL sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EBELP_VL sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-VBELN sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-POSNR sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EBELN_RD sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EBELP_RD sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-VBELN_RD sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-POSNR_RD sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EVRTN sy-vline 
WA_ROIO_RT_RTMTL_DATA_STR-EVRTP sy-vline      INTO ld_text SEPARATED BY SPACE.

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