ABAP Select data from SAP table ROIIOTWSOB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIIOTWSOB
*  INTO TABLE @DATA(IT_ROIIOTWSOB2).
*--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_ROIIOTWSOB INDEX 1 INTO DATA(WA_ROIIOTWSOB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIIOTWSOB>-MANDT = 1.
<ROIIOTWSOB>-TWSTYP = 1.
<ROIIOTWSOB>-TWVRS = 1.
<ROIIOTWSOB>-TWSNR = 1.
<ROIIOTWSOB>-STEXT_OT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIIOTWSOB-LTEXT_OT, sy-vline,
  WA_ROIIOTWSOB-OTWSRS, sy-vline,
  WA_ROIIOTWSOB-STEXT_RS, sy-vline,
  WA_ROIIOTWSOB-LTEXT_RS, sy-vline,
  WA_ROIIOTWSOB-TWSFC, sy-vline,
  WA_ROIIOTWSOB-LTEXT_FC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIIOTWSOB 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_ROIIOTWSOB 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_ROIIOTWSOB INTO WA_ROIIOTWSOB.


*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 GJAHR, internal->external for field VJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIIOTWSOB-VJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIIOTWSOB-VJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIIOTWSOB-BJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIIOTWSOB-BJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AKTVJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIIOTWSOB-AKTVJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIIOTWSOB-AKTVJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AKTBJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIIOTWSOB-AKTBJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIIOTWSOB-AKTBJAHR.
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_ROIIOTWSOB_STR, 
MANDT TYPE STRING,
TWSTYP TYPE STRING,
TWVRS TYPE STRING,
TWSNR TYPE STRING,
STEXT_OT TYPE STRING,
LTEXT_OT TYPE STRING,
OTWSRS TYPE STRING,
STEXT_RS TYPE STRING,
LTEXT_RS TYPE STRING,
TWSFC TYPE STRING,
LTEXT_FC TYPE STRING,
TWSMOD TYPE STRING,
CHKBOX TYPE STRING,
IDENT TYPE STRING,
VJAHR TYPE STRING,
BJAHR TYPE STRING,
MOTAG TYPE STRING,
DITAG TYPE STRING,
MIWCH TYPE STRING,
DOTAG TYPE STRING,
FRTAG TYPE STRING,
SATAG TYPE STRING,
SOTAG TYPE STRING,
FETAG TYPE STRING,
HOCID TYPE STRING,
BASIS TYPE STRING,
ABBR TYPE STRING,
CRUSR TYPE STRING,
CRDAT TYPE STRING,
CRTIME TYPE STRING,
INTERV TYPE STRING,
AKTVJAHR TYPE STRING,
AKTBJAHR TYPE STRING,
UPD_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIIOTWSOB_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_ROIIOTWSOB_STR-MANDT sy-vline 
WA_ROIIOTWSOB_STR-TWSTYP sy-vline 
WA_ROIIOTWSOB_STR-TWVRS sy-vline 
WA_ROIIOTWSOB_STR-TWSNR sy-vline 
WA_ROIIOTWSOB_STR-STEXT_OT sy-vline 
WA_ROIIOTWSOB_STR-LTEXT_OT sy-vline 
WA_ROIIOTWSOB_STR-OTWSRS sy-vline 
WA_ROIIOTWSOB_STR-STEXT_RS sy-vline 
WA_ROIIOTWSOB_STR-LTEXT_RS sy-vline 
WA_ROIIOTWSOB_STR-TWSFC sy-vline 
WA_ROIIOTWSOB_STR-LTEXT_FC sy-vline 
WA_ROIIOTWSOB_STR-TWSMOD sy-vline 
WA_ROIIOTWSOB_STR-CHKBOX sy-vline 
WA_ROIIOTWSOB_STR-IDENT sy-vline 
WA_ROIIOTWSOB_STR-VJAHR sy-vline 
WA_ROIIOTWSOB_STR-BJAHR sy-vline 
WA_ROIIOTWSOB_STR-MOTAG sy-vline 
WA_ROIIOTWSOB_STR-DITAG sy-vline 
WA_ROIIOTWSOB_STR-MIWCH sy-vline 
WA_ROIIOTWSOB_STR-DOTAG sy-vline 
WA_ROIIOTWSOB_STR-FRTAG sy-vline 
WA_ROIIOTWSOB_STR-SATAG sy-vline 
WA_ROIIOTWSOB_STR-SOTAG sy-vline 
WA_ROIIOTWSOB_STR-FETAG sy-vline 
WA_ROIIOTWSOB_STR-HOCID sy-vline 
WA_ROIIOTWSOB_STR-BASIS sy-vline 
WA_ROIIOTWSOB_STR-ABBR sy-vline 
WA_ROIIOTWSOB_STR-CRUSR sy-vline 
WA_ROIIOTWSOB_STR-CRDAT sy-vline 
WA_ROIIOTWSOB_STR-CRTIME sy-vline 
WA_ROIIOTWSOB_STR-INTERV sy-vline 
WA_ROIIOTWSOB_STR-AKTVJAHR sy-vline 
WA_ROIIOTWSOB_STR-AKTBJAHR sy-vline 
WA_ROIIOTWSOB_STR-UPD_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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