ABAP Select data from SAP table TCK01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TCK01 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 TCK01. 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 TCK01 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_TCK01 TYPE STANDARD TABLE OF TCK01,
      WA_TCK01 TYPE TCK01,
      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: <TCK01> TYPE TCK01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TCK01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TCK01
  INTO TABLE IT_TCK01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCK01
*  INTO TABLE @DATA(IT_TCK012).
*--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_TCK01 INDEX 1 INTO DATA(WA_TCK012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TCK01 ASSIGNING <TCK01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCK01>-MANDT = 1.
<TCK01>-KALKA = 1.
<TCK01>-BZOBJ = 1.
<TCK01>-UPDTM = 1.
<TCK01>-UPDTO = 1.

ENDLOOP.

LOOP AT IT_TCK01 INTO WA_TCK01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCK01-UPDTV, sy-vline,
  WA_TCK01-UPDTC, sy-vline,
  WA_TCK01-DTKEY, sy-vline,
  WA_TCK01-VSNEX, sy-vline,
  WA_TCK01-VSNIN, sy-vline,
  WA_TCK01-ANWER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCK01 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_TCK01 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_TCK01 INTO WA_TCK01.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TCK01-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCK01-RLDNR.
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_TCK01_STR, 
MANDT TYPE STRING,
KALKA TYPE STRING,
BZOBJ TYPE STRING,
UPDTM TYPE STRING,
UPDTO TYPE STRING,
UPDTV TYPE STRING,
UPDTC TYPE STRING,
DTKEY TYPE STRING,
VSNEX TYPE STRING,
VSNIN TYPE STRING,
ANWER TYPE STRING,
ANWEI TYPE STRING,
BVKEY TYPE STRING,
PRVFN TYPE STRING,
TERID TYPE STRING,
DMKEY TYPE STRING,
SCHKZ TYPE STRING,
GKSICHT TYPE STRING,
KDFSCHD TYPE STRING,
KDFRZUS TYPE STRING,
PART_VRSN TYPE STRING,
RLDNR TYPE STRING,
VALUATION TYPE STRING,
VALUSUBTYP TYPE STRING,
KOKRS_ALL_CALC TYPE STRING,
DEF_PRICELABEL TYPE STRING,
DEF_PRICE_VIEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCK01_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_TCK01_STR-MANDT sy-vline 
WA_TCK01_STR-KALKA sy-vline 
WA_TCK01_STR-BZOBJ sy-vline 
WA_TCK01_STR-UPDTM sy-vline 
WA_TCK01_STR-UPDTO sy-vline 
WA_TCK01_STR-UPDTV sy-vline 
WA_TCK01_STR-UPDTC sy-vline 
WA_TCK01_STR-DTKEY sy-vline 
WA_TCK01_STR-VSNEX sy-vline 
WA_TCK01_STR-VSNIN sy-vline 
WA_TCK01_STR-ANWER sy-vline 
WA_TCK01_STR-ANWEI sy-vline 
WA_TCK01_STR-BVKEY sy-vline 
WA_TCK01_STR-PRVFN sy-vline 
WA_TCK01_STR-TERID sy-vline 
WA_TCK01_STR-DMKEY sy-vline 
WA_TCK01_STR-SCHKZ sy-vline 
WA_TCK01_STR-GKSICHT sy-vline 
WA_TCK01_STR-KDFSCHD sy-vline 
WA_TCK01_STR-KDFRZUS sy-vline 
WA_TCK01_STR-PART_VRSN sy-vline 
WA_TCK01_STR-RLDNR sy-vline 
WA_TCK01_STR-VALUATION sy-vline 
WA_TCK01_STR-VALUSUBTYP sy-vline 
WA_TCK01_STR-KOKRS_ALL_CALC sy-vline 
WA_TCK01_STR-DEF_PRICELABEL sy-vline 
WA_TCK01_STR-DEF_PRICE_VIEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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