ABAP Select data from SAP table IRADLINKDETS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRADLINKDETS
*  INTO TABLE @DATA(IT_IRADLINKDETS2).
*--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_IRADLINKDETS INDEX 1 INTO DATA(WA_IRADLINKDETS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRADLINKDETS>-MANDT = 1.
<IRADLINKDETS>-RETURNAPPLICATIONDOCTYPE = 1.
<IRADLINKDETS>-RETURNAPPLICATIONDOCUMENT = 1.
<IRADLINKDETS>-RETURNAPPLICATIONITEM = 1.
<IRADLINKDETS>-REFERENCEDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRADLINKDETS-REFERENCEAPPLICATIONDOCUMENT, sy-vline,
  WA_IRADLINKDETS-REFERENCEAPPLICATIONITEM, sy-vline,
  WA_IRADLINKDETS-CONTRACTNUM, sy-vline,
  WA_IRADLINKDETS-CONTRACTITEM, sy-vline,
  WA_IRADLINKDETS-SIDE, sy-vline,
  WA_IRADLINKDETS-CONTRACTAPPLICATIONUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRADLINKDETS 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_IRADLINKDETS 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_IRADLINKDETS INTO WA_IRADLINKDETS.


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

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

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

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

*Conversion exit GJAHR, internal->external for field SETTLMTDOCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IRADLINKDETS-SETTLMTDOCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRADLINKDETS-SETTLMTDOCYEAR.
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_IRADLINKDETS_STR, 
MANDT TYPE STRING,
RETURNAPPLICATIONDOCTYPE TYPE STRING,
RETURNAPPLICATIONDOCUMENT TYPE STRING,
RETURNAPPLICATIONITEM TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,
REFERENCEAPPLICATIONDOCUMENT TYPE STRING,
REFERENCEAPPLICATIONITEM TYPE STRING,
CONTRACTNUM TYPE STRING,
CONTRACTITEM TYPE STRING,
SIDE TYPE STRING,
CONTRACTAPPLICATIONUUID TYPE STRING,
CONTRACTAPPLICATIONVERSION TYPE STRING,
TRDGCONTRACTAPPLUNITOFMEASURE TYPE STRING,
CONTRACTAPPLICATIONQUANTITY TYPE STRING,
CONTRACTAPPLSTATUSOBJECT TYPE STRING,
SETTLEMENTGROUPID TYPE STRING,
SETTLEMENTUNITUUID TYPE STRING,
SETTLMTDOC TYPE STRING,
SETTLMTCAT TYPE STRING,
SETTLMTDOCYEAR TYPE STRING,
SETTLMTSTATUS TYPE STRING,
SETTLEMENTTYPE TYPE STRING,
RETSETTLMTINVOICENUMBER TYPE STRING,
ACMTRDGCONTRISREVNRECGD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRADLINKDETS_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_IRADLINKDETS_STR-MANDT sy-vline 
WA_IRADLINKDETS_STR-RETURNAPPLICATIONDOCTYPE sy-vline 
WA_IRADLINKDETS_STR-RETURNAPPLICATIONDOCUMENT sy-vline 
WA_IRADLINKDETS_STR-RETURNAPPLICATIONITEM sy-vline 
WA_IRADLINKDETS_STR-REFERENCEDOCUMENTTYPE sy-vline 
WA_IRADLINKDETS_STR-REFERENCEAPPLICATIONDOCUMENT sy-vline 
WA_IRADLINKDETS_STR-REFERENCEAPPLICATIONITEM sy-vline 
WA_IRADLINKDETS_STR-CONTRACTNUM sy-vline 
WA_IRADLINKDETS_STR-CONTRACTITEM sy-vline 
WA_IRADLINKDETS_STR-SIDE sy-vline 
WA_IRADLINKDETS_STR-CONTRACTAPPLICATIONUUID sy-vline 
WA_IRADLINKDETS_STR-CONTRACTAPPLICATIONVERSION sy-vline 
WA_IRADLINKDETS_STR-TRDGCONTRACTAPPLUNITOFMEASURE sy-vline 
WA_IRADLINKDETS_STR-CONTRACTAPPLICATIONQUANTITY sy-vline 
WA_IRADLINKDETS_STR-CONTRACTAPPLSTATUSOBJECT sy-vline 
WA_IRADLINKDETS_STR-SETTLEMENTGROUPID sy-vline 
WA_IRADLINKDETS_STR-SETTLEMENTUNITUUID sy-vline 
WA_IRADLINKDETS_STR-SETTLMTDOC sy-vline 
WA_IRADLINKDETS_STR-SETTLMTCAT sy-vline 
WA_IRADLINKDETS_STR-SETTLMTDOCYEAR sy-vline 
WA_IRADLINKDETS_STR-SETTLMTSTATUS sy-vline 
WA_IRADLINKDETS_STR-SETTLEMENTTYPE sy-vline 
WA_IRADLINKDETS_STR-RETSETTLMTINVOICENUMBER sy-vline 
WA_IRADLINKDETS_STR-ACMTRDGCONTRISREVNRECGD sy-vline      INTO ld_text SEPARATED BY SPACE.

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