ABAP Select data from SAP table ROIJRDTSSEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJRDTSSEL
*  INTO TABLE @DATA(IT_ROIJRDTSSEL2).
*--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_ROIJRDTSSEL INDEX 1 INTO DATA(WA_ROIJRDTSSEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJRDTSSEL>-TSYST = 1.
<ROIJRDTSSEL>-PMATNR = 1.
<ROIJRDTSSEL>-BOOKTS = 1.
<ROIJRDTSSEL>-TSWERK = 1.
<ROIJRDTSSEL>-TSLGORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJRDTSSEL-TSSUOMV, sy-vline,
  WA_ROIJRDTSSEL-TRDUOM, sy-vline,
  WA_ROIJRDTSSEL-TRDCONV, sy-vline,
  WA_ROIJRDTSSEL-TPERIOD, sy-vline,
  WA_ROIJRDTSSEL-TPAST, sy-vline,
  WA_ROIJRDTSSEL-TTOLPCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJRDTSSEL 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_ROIJRDTSSEL 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_ROIJRDTSSEL INTO WA_ROIJRDTSSEL.


*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 PMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIJRDTSSEL-PMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJRDTSSEL-PMATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field RDUOM_PREV_RUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJRDTSSEL-RDUOM_PREV_RUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJRDTSSEL-RDUOM_PREV_RUN.
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_ROIJRDTSSEL_STR, 
TSYST TYPE STRING,
PMATNR TYPE STRING,
BOOKTS TYPE STRING,
TSWERK TYPE STRING,
TSLGORT TYPE STRING,
TSSUOMV TYPE STRING,
TRDUOM TYPE STRING,
TRDCONV TYPE STRING,
TPERIOD TYPE STRING,
TPAST TYPE STRING,
TTOLPCT TYPE STRING,
TTOLABS TYPE STRING,
PLTYP TYPE STRING,
CALFLG TYPE STRING,
PLCAL TYPE STRING,
OFFPER TYPE STRING,
OFFUOM TYPE STRING,
TMAXLOT TYPE STRING,
TMINLOT TYPE STRING,
TINCLOT TYPE STRING,
TMAXINV TYPE STRING,
TTARGET TYPE STRING,
TREORDER TYPE STRING,
SLOCID TYPE STRING,
TMININV TYPE STRING,
TSAFETY TYPE STRING,
TUNPUMP TYPE STRING,
TMEINS TYPE STRING,
TCMETH TYPE STRING,
ENQ_FAIL TYPE STRING,
RDUOM_PREV_RUN TYPE STRING,
NO_MAT_CTRL TYPE STRING,
PROCESSED TYPE STRING,
SFTLVL TYPE STRING,
HRLVL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJRDTSSEL_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_ROIJRDTSSEL_STR-TSYST sy-vline 
WA_ROIJRDTSSEL_STR-PMATNR sy-vline 
WA_ROIJRDTSSEL_STR-BOOKTS sy-vline 
WA_ROIJRDTSSEL_STR-TSWERK sy-vline 
WA_ROIJRDTSSEL_STR-TSLGORT sy-vline 
WA_ROIJRDTSSEL_STR-TSSUOMV sy-vline 
WA_ROIJRDTSSEL_STR-TRDUOM sy-vline 
WA_ROIJRDTSSEL_STR-TRDCONV sy-vline 
WA_ROIJRDTSSEL_STR-TPERIOD sy-vline 
WA_ROIJRDTSSEL_STR-TPAST sy-vline 
WA_ROIJRDTSSEL_STR-TTOLPCT sy-vline 
WA_ROIJRDTSSEL_STR-TTOLABS sy-vline 
WA_ROIJRDTSSEL_STR-PLTYP sy-vline 
WA_ROIJRDTSSEL_STR-CALFLG sy-vline 
WA_ROIJRDTSSEL_STR-PLCAL sy-vline 
WA_ROIJRDTSSEL_STR-OFFPER sy-vline 
WA_ROIJRDTSSEL_STR-OFFUOM sy-vline 
WA_ROIJRDTSSEL_STR-TMAXLOT sy-vline 
WA_ROIJRDTSSEL_STR-TMINLOT sy-vline 
WA_ROIJRDTSSEL_STR-TINCLOT sy-vline 
WA_ROIJRDTSSEL_STR-TMAXINV sy-vline 
WA_ROIJRDTSSEL_STR-TTARGET sy-vline 
WA_ROIJRDTSSEL_STR-TREORDER sy-vline 
WA_ROIJRDTSSEL_STR-SLOCID sy-vline 
WA_ROIJRDTSSEL_STR-TMININV sy-vline 
WA_ROIJRDTSSEL_STR-TSAFETY sy-vline 
WA_ROIJRDTSSEL_STR-TUNPUMP sy-vline 
WA_ROIJRDTSSEL_STR-TMEINS sy-vline 
WA_ROIJRDTSSEL_STR-TCMETH sy-vline 
WA_ROIJRDTSSEL_STR-ENQ_FAIL sy-vline 
WA_ROIJRDTSSEL_STR-RDUOM_PREV_RUN sy-vline 
WA_ROIJRDTSSEL_STR-NO_MAT_CTRL sy-vline 
WA_ROIJRDTSSEL_STR-PROCESSED sy-vline 
WA_ROIJRDTSSEL_STR-SFTLVL sy-vline 
WA_ROIJRDTSSEL_STR-HRLVL sy-vline      INTO ld_text SEPARATED BY SPACE.

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