ABAP Select data from SAP table ROOSOURCE into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROOSOURCE 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 ROOSOURCE. 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 ROOSOURCE 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_ROOSOURCE TYPE STANDARD TABLE OF ROOSOURCE,
      WA_ROOSOURCE TYPE ROOSOURCE,
      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: <ROOSOURCE> TYPE ROOSOURCE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROOSOURCE
*  INTO TABLE @DATA(IT_ROOSOURCE2).
*--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_ROOSOURCE INDEX 1 INTO DATA(WA_ROOSOURCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROOSOURCE>-OLTPSOURCE = 1.
<ROOSOURCE>-OBJVERS = 1.
<ROOSOURCE>-TYPE = 1.
<ROOSOURCE>-APPLNM = 1.
<ROOSOURCE>-BASOSOURCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROOSOURCE-DELTA, sy-vline,
  WA_ROOSOURCE-STOCKUPD, sy-vline,
  WA_ROOSOURCE-UPDFLG1, sy-vline,
  WA_ROOSOURCE-UPDFLG2, sy-vline,
  WA_ROOSOURCE-UPDFLG3, sy-vline,
  WA_ROOSOURCE-READONLY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROOSOURCE 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_ROOSOURCE 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_ROOSOURCE INTO WA_ROOSOURCE.


*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 DELTA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROOSOURCE-DELTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROOSOURCE-DELTA.
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_ROOSOURCE_STR, 
OLTPSOURCE TYPE STRING,
OBJVERS TYPE STRING,
TYPE TYPE STRING,
APPLNM TYPE STRING,
BASOSOURCE TYPE STRING,
DELTA TYPE STRING,
STOCKUPD TYPE STRING,
UPDFLG1 TYPE STRING,
UPDFLG2 TYPE STRING,
UPDFLG3 TYPE STRING,
READONLY TYPE STRING,
INITSIMU TYPE STRING,
INITCOMMIT TYPE STRING,
ZDD_ABLE TYPE STRING,
REALTIME TYPE STRING,
EXMETHOD TYPE STRING,
EXTRACTOR TYPE STRING,
EXSTRUCT TYPE STRING,
GENFLAG TYPE STRING,
VIRTCUBE TYPE STRING,
APPENDFLAG TYPE STRING,
TSTPNM TYPE STRING,
TSTPDAT TYPE STRING,
TSTPTIM TYPE STRING,
INVFIELD TYPE STRING,
GENDELTAFD TYPE STRING,
GENDELTATP TYPE STRING,
DELTASAFE1 TYPE STRING,
DELTASAFE2 TYPE STRING,
DLTAGETMAX TYPE STRING,
SEGMENT TYPE STRING,
AFTERIMP TYPE STRING,
BEFOREXP TYPE STRING,
MAINTAIN TYPE STRING,
CHECKDS TYPE STRING,
SAVEDS TYPE STRING,
TRANSPDS TYPE STRING,
DELETE_DS TYPE STRING,
RESETDELTA TYPE STRING,
APPL_PROP TYPE STRING,
ACTIVATE TYPE STRING,
ZDD_REPLAY TYPE STRING,
TFMETHODS TYPE STRING,
ARCHMETHOD TYPE STRING,
DUPREC TYPE STRING,
SCLIENT TYPE STRING,
PRIMSEGID TYPE STRING,
OBJECTFD TYPE STRING,
CONTSRCVERS TYPE STRING,
RECONCILIATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROOSOURCE_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_ROOSOURCE_STR-OLTPSOURCE sy-vline 
WA_ROOSOURCE_STR-OBJVERS sy-vline 
WA_ROOSOURCE_STR-TYPE sy-vline 
WA_ROOSOURCE_STR-APPLNM sy-vline 
WA_ROOSOURCE_STR-BASOSOURCE sy-vline 
WA_ROOSOURCE_STR-DELTA sy-vline 
WA_ROOSOURCE_STR-STOCKUPD sy-vline 
WA_ROOSOURCE_STR-UPDFLG1 sy-vline 
WA_ROOSOURCE_STR-UPDFLG2 sy-vline 
WA_ROOSOURCE_STR-UPDFLG3 sy-vline 
WA_ROOSOURCE_STR-READONLY sy-vline 
WA_ROOSOURCE_STR-INITSIMU sy-vline 
WA_ROOSOURCE_STR-INITCOMMIT sy-vline 
WA_ROOSOURCE_STR-ZDD_ABLE sy-vline 
WA_ROOSOURCE_STR-REALTIME sy-vline 
WA_ROOSOURCE_STR-EXMETHOD sy-vline 
WA_ROOSOURCE_STR-EXTRACTOR sy-vline 
WA_ROOSOURCE_STR-EXSTRUCT sy-vline 
WA_ROOSOURCE_STR-GENFLAG sy-vline 
WA_ROOSOURCE_STR-VIRTCUBE sy-vline 
WA_ROOSOURCE_STR-APPENDFLAG sy-vline 
WA_ROOSOURCE_STR-TSTPNM sy-vline 
WA_ROOSOURCE_STR-TSTPDAT sy-vline 
WA_ROOSOURCE_STR-TSTPTIM sy-vline 
WA_ROOSOURCE_STR-INVFIELD sy-vline 
WA_ROOSOURCE_STR-GENDELTAFD sy-vline 
WA_ROOSOURCE_STR-GENDELTATP sy-vline 
WA_ROOSOURCE_STR-DELTASAFE1 sy-vline 
WA_ROOSOURCE_STR-DELTASAFE2 sy-vline 
WA_ROOSOURCE_STR-DLTAGETMAX sy-vline 
WA_ROOSOURCE_STR-SEGMENT sy-vline 
WA_ROOSOURCE_STR-AFTERIMP sy-vline 
WA_ROOSOURCE_STR-BEFOREXP sy-vline 
WA_ROOSOURCE_STR-MAINTAIN sy-vline 
WA_ROOSOURCE_STR-CHECKDS sy-vline 
WA_ROOSOURCE_STR-SAVEDS sy-vline 
WA_ROOSOURCE_STR-TRANSPDS sy-vline 
WA_ROOSOURCE_STR-DELETE_DS sy-vline 
WA_ROOSOURCE_STR-RESETDELTA sy-vline 
WA_ROOSOURCE_STR-APPL_PROP sy-vline 
WA_ROOSOURCE_STR-ACTIVATE sy-vline 
WA_ROOSOURCE_STR-ZDD_REPLAY sy-vline 
WA_ROOSOURCE_STR-TFMETHODS sy-vline 
WA_ROOSOURCE_STR-ARCHMETHOD sy-vline 
WA_ROOSOURCE_STR-DUPREC sy-vline 
WA_ROOSOURCE_STR-SCLIENT sy-vline 
WA_ROOSOURCE_STR-PRIMSEGID sy-vline 
WA_ROOSOURCE_STR-OBJECTFD sy-vline 
WA_ROOSOURCE_STR-CONTSRCVERS sy-vline 
WA_ROOSOURCE_STR-RECONCILIATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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