ABAP Select data from SAP table TDS_CFS_CLASSIFICATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_CFS_CLASSIFICATION
*  INTO TABLE @DATA(IT_TDS_CFS_CLASSIFICATION2).
*--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_TDS_CFS_CLASSIFICATION INDEX 1 INTO DATA(WA_TDS_CFS_CLASSIFICATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_CFS_CLASSIFICATION>-NIELS = 1.
<TDS_CFS_CLASSIFICATION>-NIELSBEZ = 1.
<TDS_CFS_CLASSIFICATION>-RPMKR = 1.
<TDS_CFS_CLASSIFICATION>-KUKLA = 1.
<TDS_CFS_CLASSIFICATION>-KUKLABEZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_CFS_CLASSIFICATION-BRSCH, sy-vline,
  WA_TDS_CFS_CLASSIFICATION-BRSCHBEZ, sy-vline,
  WA_TDS_CFS_CLASSIFICATION-BRAN1, sy-vline,
  WA_TDS_CFS_CLASSIFICATION-BRAN1BEZ, sy-vline,
  WA_TDS_CFS_CLASSIFICATION-BRAN2, sy-vline,
  WA_TDS_CFS_CLASSIFICATION-BRAN2BEZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_CFS_CLASSIFICATION 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_TDS_CFS_CLASSIFICATION 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_TDS_CFS_CLASSIFICATION INTO WA_TDS_CFS_CLASSIFICATION.


*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_TDS_CFS_CLASSIFICATION_STR, 
NIELS TYPE STRING,
NIELSBEZ TYPE STRING,
RPMKR TYPE STRING,
KUKLA TYPE STRING,
KUKLABEZ TYPE STRING,
BRSCH TYPE STRING,
BRSCHBEZ TYPE STRING,
BRAN1 TYPE STRING,
BRAN1BEZ TYPE STRING,
BRAN2 TYPE STRING,
BRAN2BEZ TYPE STRING,
BRAN3 TYPE STRING,
BRAN3BEZ TYPE STRING,
BRAN4 TYPE STRING,
BRAN4BEZ TYPE STRING,
BRAN5 TYPE STRING,
BRAN5BEZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_CFS_CLASSIFICATION_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_TDS_CFS_CLASSIFICATION_STR-NIELS sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-NIELSBEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-RPMKR sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-KUKLA sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-KUKLABEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRSCH sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRSCHBEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN1 sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN1BEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN2 sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN2BEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN3 sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN3BEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN4 sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN4BEZ sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN5 sy-vline 
WA_TDS_CFS_CLASSIFICATION_STR-BRAN5BEZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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