ABAP Select data from SAP table ICLNOLDO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLNOLDO
*  INTO TABLE @DATA(IT_ICLNOLDO2).
*--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_ICLNOLDO INDEX 1 INTO DATA(WA_ICLNOLDO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLNOLDO>-CLIENT = 1.
<ICLNOLDO>-NOTICE = 1.
<ICLNOLDO>-DAMAGEDOBJ = 1.
<ICLNOLDO>-CREATEDBY = 1.
<ICLNOLDO>-CREATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLNOLDO-CHANGEDBY, sy-vline,
  WA_ICLNOLDO-CHANGETIME, sy-vline,
  WA_ICLNOLDO-DAMAGECAT, sy-vline,
  WA_ICLNOLDO-PROPTYPE, sy-vline,
  WA_ICLNOLDO-SEVERITY, sy-vline,
  WA_ICLNOLDO-XLIAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLNOLDO 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_ICLNOLDO 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_ICLNOLDO INTO WA_ICLNOLDO.


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

*Conversion exit TSTAM, internal->external for field CREATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLNOLDO-CREATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLNOLDO-CREATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLNOLDO-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLNOLDO-CHANGETIME.
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_ICLNOLDO_STR, 
CLIENT TYPE STRING,
NOTICE TYPE STRING,
DAMAGEDOBJ TYPE STRING,
CREATEDBY TYPE STRING,
CREATETIME TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGETIME TYPE STRING,
DAMAGECAT TYPE STRING,
PROPTYPE TYPE STRING,
SEVERITY TYPE STRING,
XLIAB TYPE STRING,
DAMDESCRIP TYPE STRING,
EC TYPE STRING,
ECCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLNOLDO_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_ICLNOLDO_STR-CLIENT sy-vline 
WA_ICLNOLDO_STR-NOTICE sy-vline 
WA_ICLNOLDO_STR-DAMAGEDOBJ sy-vline 
WA_ICLNOLDO_STR-CREATEDBY sy-vline 
WA_ICLNOLDO_STR-CREATETIME sy-vline 
WA_ICLNOLDO_STR-CHANGEDBY sy-vline 
WA_ICLNOLDO_STR-CHANGETIME sy-vline 
WA_ICLNOLDO_STR-DAMAGECAT sy-vline 
WA_ICLNOLDO_STR-PROPTYPE sy-vline 
WA_ICLNOLDO_STR-SEVERITY sy-vline 
WA_ICLNOLDO_STR-XLIAB sy-vline 
WA_ICLNOLDO_STR-DAMDESCRIP sy-vline 
WA_ICLNOLDO_STR-EC sy-vline 
WA_ICLNOLDO_STR-ECCURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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