ABAP Select data from SAP table /SYCLO/DSD_HD_KOMK_STR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SYCLO/DSD_HD_KOMK_STR
*  INTO TABLE @DATA(IT_/SYCLO/DSD_HD_KOMK_STR2).
*--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_/SYCLO/DSD_HD_KOMK_STR INDEX 1 INTO DATA(WA_/SYCLO/DSD_HD_KOMK_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SYCLO/DSD_HD_KOMK_STR>-BIL_NUMBER = 1.
</SYCLO/DSD_HD_KOMK_STR>-KNUMV = 1.
</SYCLO/DSD_HD_KOMK_STR>-VKORG = 1.
</SYCLO/DSD_HD_KOMK_STR>-VTWEG = 1.
</SYCLO/DSD_HD_KOMK_STR>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SYCLO/DSD_HD_KOMK_STR-BZIRK, sy-vline,
  WA_/SYCLO/DSD_HD_KOMK_STR-VKGRP, sy-vline,
  WA_/SYCLO/DSD_HD_KOMK_STR-BRSCH, sy-vline,
  WA_/SYCLO/DSD_HD_KOMK_STR-VKBUR, sy-vline,
  WA_/SYCLO/DSD_HD_KOMK_STR-KONDA, sy-vline,
  WA_/SYCLO/DSD_HD_KOMK_STR-KDGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SYCLO/DSD_HD_KOMK_STR 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_/SYCLO/DSD_HD_KOMK_STR 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_/SYCLO/DSD_HD_KOMK_STR INTO WA_/SYCLO/DSD_HD_KOMK_STR.


*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 BIL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/DSD_HD_KOMK_STR-BIL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/DSD_HD_KOMK_STR-BIL_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURRF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/DSD_HD_KOMK_STR-KURRF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/DSD_HD_KOMK_STR-KURRF.
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_/SYCLO/DSD_HD_KOMK_STR_STR, 
BIL_NUMBER TYPE STRING,
KNUMV TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BZIRK TYPE STRING,
VKGRP TYPE STRING,
BRSCH TYPE STRING,
VKBUR TYPE STRING,
KONDA TYPE STRING,
KDGRP TYPE STRING,
PLTYP TYPE STRING,
ALAND TYPE STRING,
WKREG TYPE STRING,
WKCOU TYPE STRING,
WKCTY TYPE STRING,
BUKRS TYPE STRING,
SUPOS TYPE STRING,
FKWRT TYPE STRING,
WAERK TYPE STRING,
HWAER TYPE STRING,
KURRF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SYCLO/DSD_HD_KOMK_STR_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_/SYCLO/DSD_HD_KOMK_STR_STR-BIL_NUMBER sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-KNUMV sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-VKORG sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-VTWEG sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-SPART sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-BZIRK sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-VKGRP sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-BRSCH sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-VKBUR sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-KONDA sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-KDGRP sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-PLTYP sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-ALAND sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-WKREG sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-WKCOU sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-WKCTY sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-BUKRS sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-SUPOS sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-FKWRT sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-WAERK sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-HWAER sy-vline 
WA_/SYCLO/DSD_HD_KOMK_STR_STR-KURRF sy-vline      INTO ld_text SEPARATED BY SPACE.

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