ABAP Select data from SAP table /SDF/SLCHRDDM2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SDF/SLCHRDDM2 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 /SDF/SLCHRDDM2. 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 /SDF/SLCHRDDM2 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_/SDF/SLCHRDDM2 TYPE STANDARD TABLE OF /SDF/SLCHRDDM2,
      WA_/SDF/SLCHRDDM2 TYPE /SDF/SLCHRDDM2,
      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: </SDF/SLCHRDDM2> TYPE /SDF/SLCHRDDM2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SDF/SLCHRDDM2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SDF/SLCHRDDM2
  INTO TABLE IT_/SDF/SLCHRDDM2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/SLCHRDDM2
*  INTO TABLE @DATA(IT_/SDF/SLCHRDDM22).
*--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_/SDF/SLCHRDDM2 INDEX 1 INTO DATA(WA_/SDF/SLCHRDDM22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SDF/SLCHRDDM2 ASSIGNING </SDF/SLCHRDDM2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/SLCHRDDM2>-DESCRIPT = 1.
</SDF/SLCHRDDM2>-ALONE = 1.
</SDF/SLCHRDDM2>-TWOSYSTEMS = 1.
</SDF/SLCHRDDM2>-THREESYST = 1.
</SDF/SLCHRDDM2>-OTHERS = 1.

ENDLOOP.

LOOP AT IT_/SDF/SLCHRDDM2 INTO WA_/SDF/SLCHRDDM2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/SLCHRDDM2-TESTSYSTEM, sy-vline,
  WA_/SDF/SLCHRDDM2-PRODSYSTEM, sy-vline,
  WA_/SDF/SLCHRDDM2-ENTWSYSTEM, sy-vline,
  WA_/SDF/SLCHRDDM2-KONSSYSTEM, sy-vline,
  WA_/SDF/SLCHRDDM2-PRO3SYSTEM, sy-vline,
  WA_/SDF/SLCHRDDM2-SOURCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SDF/SLCHRDDM2 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_/SDF/SLCHRDDM2 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_/SDF/SLCHRDDM2 INTO WA_/SDF/SLCHRDDM2.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SDF/SLCHRDDM2_STR, 
DESCRIPT TYPE STRING,
ALONE TYPE STRING,
TWOSYSTEMS TYPE STRING,
THREESYST TYPE STRING,
OTHERS TYPE STRING,
TESTSYSTEM TYPE STRING,
PRODSYSTEM TYPE STRING,
ENTWSYSTEM TYPE STRING,
KONSSYSTEM TYPE STRING,
PRO3SYSTEM TYPE STRING,
SOURCE TYPE STRING,
DESTIN TYPE STRING,
TRANSLAYER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SDF/SLCHRDDM2_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_/SDF/SLCHRDDM2_STR-DESCRIPT sy-vline 
WA_/SDF/SLCHRDDM2_STR-ALONE sy-vline 
WA_/SDF/SLCHRDDM2_STR-TWOSYSTEMS sy-vline 
WA_/SDF/SLCHRDDM2_STR-THREESYST sy-vline 
WA_/SDF/SLCHRDDM2_STR-OTHERS sy-vline 
WA_/SDF/SLCHRDDM2_STR-TESTSYSTEM sy-vline 
WA_/SDF/SLCHRDDM2_STR-PRODSYSTEM sy-vline 
WA_/SDF/SLCHRDDM2_STR-ENTWSYSTEM sy-vline 
WA_/SDF/SLCHRDDM2_STR-KONSSYSTEM sy-vline 
WA_/SDF/SLCHRDDM2_STR-PRO3SYSTEM sy-vline 
WA_/SDF/SLCHRDDM2_STR-SOURCE sy-vline 
WA_/SDF/SLCHRDDM2_STR-DESTIN sy-vline 
WA_/SDF/SLCHRDDM2_STR-TRANSLAYER sy-vline      INTO ld_text SEPARATED BY SPACE.

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