ABAP Select data from SAP table DITSM 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 DITSM 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 DITSM. 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 DITSM 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_DITSM TYPE STANDARD TABLE OF DITSM,
      WA_DITSM TYPE DITSM,
      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: <DITSM> TYPE DITSM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DITSM
*  INTO TABLE @DATA(IT_DITSM2).
*--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_DITSM INDEX 1 INTO DATA(WA_DITSM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DITSM>-ISYMSEL = 1.
<DITSM>-CLIENT = 1.
<DITSM>-ISMNR = 1.
<DITSM>-ISMVR = 1.
<DITSM>-LANGU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DITSM-ISMTXT, sy-vline,
  WA_DITSM-INDLTXT, sy-vline,
  WA_DITSM-TRSTAT, sy-vline,
  WA_DITSM-ERNAM, sy-vline,
  WA_DITSM-ERDAT, sy-vline,
  WA_DITSM-ERTIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DITSM 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_DITSM 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_DITSM INTO WA_DITSM.


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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DITSM-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DITSM-LANGU.
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_DITSM_STR, 
ISYMSEL TYPE STRING,
CLIENT TYPE STRING,
ISMNR TYPE STRING,
ISMVR TYPE STRING,
LANGU TYPE STRING,
ISMTXT TYPE STRING,
INDLTXT TYPE STRING,
TRSTAT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
FLGDEL TYPE STRING,
COPER TYPE STRING,
ISMTP TYPE STRING,
APPLAR TYPE STRING,
ISMART TYPE STRING,
VALDTFRM TYPE STRING,
VALDTTO TYPE STRING,
ISMCAT TYPE STRING,
ISMGRP TYPE STRING,
ISMCOD TYPE STRING,
ARTPR TYPE STRING,
PRIOK TYPE STRING,
ISMST TYPE STRING,
RBNR TYPE STRING,
OPCAT TYPE STRING,
PRCAT TYPE STRING,
CACAT TYPE STRING,
ITEMNR TYPE STRING,
ISYMICON TYPE STRING,
LINKICON TYPE STRING,
FLGUPD TYPE STRING,
STTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DITSM_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_DITSM_STR-ISYMSEL sy-vline 
WA_DITSM_STR-CLIENT sy-vline 
WA_DITSM_STR-ISMNR sy-vline 
WA_DITSM_STR-ISMVR sy-vline 
WA_DITSM_STR-LANGU sy-vline 
WA_DITSM_STR-ISMTXT sy-vline 
WA_DITSM_STR-INDLTXT sy-vline 
WA_DITSM_STR-TRSTAT sy-vline 
WA_DITSM_STR-ERNAM sy-vline 
WA_DITSM_STR-ERDAT sy-vline 
WA_DITSM_STR-ERTIM sy-vline 
WA_DITSM_STR-AENAM sy-vline 
WA_DITSM_STR-AEDAT sy-vline 
WA_DITSM_STR-AETIM sy-vline 
WA_DITSM_STR-FLGDEL sy-vline 
WA_DITSM_STR-COPER sy-vline 
WA_DITSM_STR-ISMTP sy-vline 
WA_DITSM_STR-APPLAR sy-vline 
WA_DITSM_STR-ISMART sy-vline 
WA_DITSM_STR-VALDTFRM sy-vline 
WA_DITSM_STR-VALDTTO sy-vline 
WA_DITSM_STR-ISMCAT sy-vline 
WA_DITSM_STR-ISMGRP sy-vline 
WA_DITSM_STR-ISMCOD sy-vline 
WA_DITSM_STR-ARTPR sy-vline 
WA_DITSM_STR-PRIOK sy-vline 
WA_DITSM_STR-ISMST sy-vline 
WA_DITSM_STR-RBNR sy-vline 
WA_DITSM_STR-OPCAT sy-vline 
WA_DITSM_STR-PRCAT sy-vline 
WA_DITSM_STR-CACAT sy-vline 
WA_DITSM_STR-ITEMNR sy-vline 
WA_DITSM_STR-ISYMICON sy-vline 
WA_DITSM_STR-LINKICON sy-vline 
WA_DITSM_STR-FLGUPD sy-vline 
WA_DITSM_STR-STTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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