ABAP Select data from SAP table TKSBS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKSBS
*  INTO TABLE @DATA(IT_TKSBS2).
*--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_TKSBS INDEX 1 INTO DATA(WA_TKSBS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKSBS>-MANDT = 1.
<TKSBS>-LSTCL = 1.
<TKSBS>-VARNR = 1.
<TKSBS>-COLUM = 1.
<TKSBS>-TNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKSBS-FNAME, sy-vline,
  WA_TKSBS-OFFSE, sy-vline,
  WA_TKSBS-LENGT, sy-vline,
  WA_TKSBS-DEZIM, sy-vline,
  WA_TKSBS-OFFST, sy-vline,
  WA_TKSBS-DTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKSBS 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_TKSBS 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_TKSBS INTO WA_TKSBS.


*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 DTYPE, internal->external for field DTYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_TKSBS-DTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKSBS-DTYPE.
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_TKSBS_STR, 
MANDT TYPE STRING,
LSTCL TYPE STRING,
VARNR TYPE STRING,
COLUM TYPE STRING,
TNAME TYPE STRING,
FNAME TYPE STRING,
OFFSE TYPE STRING,
LENGT TYPE STRING,
DEZIM TYPE STRING,
OFFST TYPE STRING,
DTYPE TYPE STRING,
RTABL TYPE STRING,
RFIEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKSBS_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_TKSBS_STR-MANDT sy-vline 
WA_TKSBS_STR-LSTCL sy-vline 
WA_TKSBS_STR-VARNR sy-vline 
WA_TKSBS_STR-COLUM sy-vline 
WA_TKSBS_STR-TNAME sy-vline 
WA_TKSBS_STR-FNAME sy-vline 
WA_TKSBS_STR-OFFSE sy-vline 
WA_TKSBS_STR-LENGT sy-vline 
WA_TKSBS_STR-DEZIM sy-vline 
WA_TKSBS_STR-OFFST sy-vline 
WA_TKSBS_STR-DTYPE sy-vline 
WA_TKSBS_STR-RTABL sy-vline 
WA_TKSBS_STR-RFIEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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