ABAP Select data from SAP table ROIO_RT_RESB_LIST 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_RESB_LIST 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_RESB_LIST. 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_RESB_LIST 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_RESB_LIST TYPE STANDARD TABLE OF ROIO_RT_RESB_LIST,
      WA_ROIO_RT_RESB_LIST TYPE ROIO_RT_RESB_LIST,
      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_RESB_LIST> TYPE ROIO_RT_RESB_LIST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIO_RT_RESB_LIST
*  INTO TABLE @DATA(IT_ROIO_RT_RESB_LIST2).
*--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_RESB_LIST INDEX 1 INTO DATA(WA_ROIO_RT_RESB_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIO_RT_RESB_LIST>-AUFNR = 1.
<ROIO_RT_RESB_LIST>-VORNR = 1.
<ROIO_RT_RESB_LIST>-POSNR = 1.
<ROIO_RT_RESB_LIST>-AUART = 1.
<ROIO_RT_RESB_LIST>-AUTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIO_RT_RESB_LIST-REFNR, sy-vline,
  WA_ROIO_RT_RESB_LIST-ERNAM, sy-vline,
  WA_ROIO_RT_RESB_LIST-ERDAT, sy-vline,
  WA_ROIO_RT_RESB_LIST-AENAM, sy-vline,
  WA_ROIO_RT_RESB_LIST-AEDAT, sy-vline,
  WA_ROIO_RT_RESB_LIST-KTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIO_RT_RESB_LIST 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_RESB_LIST 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_RESB_LIST INTO WA_ROIO_RT_RESB_LIST.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIO_RT_RESB_LIST-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIO_RT_RESB_LIST-DOCNR.
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_RESB_LIST_STR, 
AUFNR TYPE STRING,
VORNR TYPE STRING,
POSNR TYPE STRING,
AUART TYPE STRING,
AUTYP TYPE STRING,
REFNR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
KTEXT TYPE STRING,
BUKRS TYPE STRING,
KOKRS TYPE STRING,
CCKEY TYPE STRING,
KOSTV TYPE STRING,
PRCTR TYPE STRING,
PSPEL TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
PRVBE TYPE STRING,
CHARG TYPE STRING,
PLPLA TYPE STRING,
SOBKZ TYPE STRING,
BDTER TYPE STRING,
BDMNG TYPE STRING,
LMENG TYPE STRING,
MEINS TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
GSBER TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
SGTXT TYPE STRING,
OIO_HOLD TYPE STRING,
DBSKZ TYPE STRING,
POSTP TYPE STRING,
OIO_SPROC TYPE STRING,
OIO_SPTXT TYPE STRING,
DOCNR TYPE STRING,
RECTY TYPE STRING,
DOCLN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIO_RT_RESB_LIST_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_RESB_LIST_STR-AUFNR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-VORNR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-POSNR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-AUART sy-vline 
WA_ROIO_RT_RESB_LIST_STR-AUTYP sy-vline 
WA_ROIO_RT_RESB_LIST_STR-REFNR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-ERNAM sy-vline 
WA_ROIO_RT_RESB_LIST_STR-ERDAT sy-vline 
WA_ROIO_RT_RESB_LIST_STR-AENAM sy-vline 
WA_ROIO_RT_RESB_LIST_STR-AEDAT sy-vline 
WA_ROIO_RT_RESB_LIST_STR-KTEXT sy-vline 
WA_ROIO_RT_RESB_LIST_STR-BUKRS sy-vline 
WA_ROIO_RT_RESB_LIST_STR-KOKRS sy-vline 
WA_ROIO_RT_RESB_LIST_STR-CCKEY sy-vline 
WA_ROIO_RT_RESB_LIST_STR-KOSTV sy-vline 
WA_ROIO_RT_RESB_LIST_STR-PRCTR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-PSPEL sy-vline 
WA_ROIO_RT_RESB_LIST_STR-AUFPL sy-vline 
WA_ROIO_RT_RESB_LIST_STR-APLZL sy-vline 
WA_ROIO_RT_RESB_LIST_STR-RSNUM sy-vline 
WA_ROIO_RT_RESB_LIST_STR-RSPOS sy-vline 
WA_ROIO_RT_RESB_LIST_STR-RSART sy-vline 
WA_ROIO_RT_RESB_LIST_STR-MATNR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-WERKS sy-vline 
WA_ROIO_RT_RESB_LIST_STR-LGORT sy-vline 
WA_ROIO_RT_RESB_LIST_STR-PRVBE sy-vline 
WA_ROIO_RT_RESB_LIST_STR-CHARG sy-vline 
WA_ROIO_RT_RESB_LIST_STR-PLPLA sy-vline 
WA_ROIO_RT_RESB_LIST_STR-SOBKZ sy-vline 
WA_ROIO_RT_RESB_LIST_STR-BDTER sy-vline 
WA_ROIO_RT_RESB_LIST_STR-BDMNG sy-vline 
WA_ROIO_RT_RESB_LIST_STR-LMENG sy-vline 
WA_ROIO_RT_RESB_LIST_STR-MEINS sy-vline 
WA_ROIO_RT_RESB_LIST_STR-ERFMG sy-vline 
WA_ROIO_RT_RESB_LIST_STR-ERFME sy-vline 
WA_ROIO_RT_RESB_LIST_STR-GSBER sy-vline 
WA_ROIO_RT_RESB_LIST_STR-UMWRK sy-vline 
WA_ROIO_RT_RESB_LIST_STR-UMLGO sy-vline 
WA_ROIO_RT_RESB_LIST_STR-SGTXT sy-vline 
WA_ROIO_RT_RESB_LIST_STR-OIO_HOLD sy-vline 
WA_ROIO_RT_RESB_LIST_STR-DBSKZ sy-vline 
WA_ROIO_RT_RESB_LIST_STR-POSTP sy-vline 
WA_ROIO_RT_RESB_LIST_STR-OIO_SPROC sy-vline 
WA_ROIO_RT_RESB_LIST_STR-OIO_SPTXT sy-vline 
WA_ROIO_RT_RESB_LIST_STR-DOCNR sy-vline 
WA_ROIO_RT_RESB_LIST_STR-RECTY sy-vline 
WA_ROIO_RT_RESB_LIST_STR-DOCLN sy-vline      INTO ld_text SEPARATED BY SPACE.

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