ABAP Select data from SAP table SCOMPKDTLN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCOMPKDTLN
*  INTO TABLE @DATA(IT_SCOMPKDTLN2).
*--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_SCOMPKDTLN INDEX 1 INTO DATA(WA_SCOMPKDTLN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCOMPKDTLN>-DEVCLASS = 1.
<SCOMPKDTLN>-CTEXT = 1.
<SCOMPKDTLN>-DEL_IN_MEM = 1.
<SCOMPKDTLN>-LANGUAGE = 1.
<SCOMPKDTLN>-MASTERLANG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCOMPKDTLN-KORRFLAG, sy-vline,
  WA_SCOMPKDTLN-AS4USER, sy-vline,
  WA_SCOMPKDTLN-PDEVCLASS, sy-vline,
  WA_SCOMPKDTLN-LAYER_TEXT, sy-vline,
  WA_SCOMPKDTLN-DLVUNIT, sy-vline,
  WA_SCOMPKDTLN-DLVU_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCOMPKDTLN 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_SCOMPKDTLN 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_SCOMPKDTLN INTO WA_SCOMPKDTLN.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SCOMPKDTLN-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCOMPKDTLN-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SCOMPKDTLN-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCOMPKDTLN-MASTERLANG.
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_SCOMPKDTLN_STR, 
DEVCLASS TYPE STRING,
CTEXT TYPE STRING,
DEL_IN_MEM TYPE STRING,
LANGUAGE TYPE STRING,
MASTERLANG TYPE STRING,
KORRFLAG TYPE STRING,
AS4USER TYPE STRING,
PDEVCLASS TYPE STRING,
LAYER_TEXT TYPE STRING,
DLVUNIT TYPE STRING,
DLVU_TEXT TYPE STRING,
COMP_POSID TYPE STRING,
COMPONENT TYPE STRING,
COMP_TEXT TYPE STRING,
NAMESPACE TYPE STRING,
TPCLASS TYPE STRING,
PARENTCL TYPE STRING,
PERMINHER TYPE STRING,
INTFPREFX TYPE STRING,
PACKTYPE TYPE STRING,
PACKKIND TYPE STRING,
RESTRICTED TYPE STRING,
MAINPACK TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
SRV_CHECK TYPE STRING,
CLI_CHECK TYPE STRING,
EXT_ALIAS TYPE STRING,
PROJECT_GUID TYPE STRING,
PROJECT_ID TYPE STRING,
PROJECT_SHORT_TEXT TYPE STRING,
PROJECT_PASSDOWN TYPE STRING,
PROJECT_INHERITED TYPE STRING,
SWITCH_ID TYPE STRING,
SWITCH_SHORT_TEXT TYPE STRING,
TRANSLATION_DEPTH TYPE STRING,
TRANSLATION_DEPTH_TEXT TYPE STRING,
AS4USER_DESCR TYPE STRING,
SUPERPACKAGE_IN_TDEVC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCOMPKDTLN_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_SCOMPKDTLN_STR-DEVCLASS sy-vline 
WA_SCOMPKDTLN_STR-CTEXT sy-vline 
WA_SCOMPKDTLN_STR-DEL_IN_MEM sy-vline 
WA_SCOMPKDTLN_STR-LANGUAGE sy-vline 
WA_SCOMPKDTLN_STR-MASTERLANG sy-vline 
WA_SCOMPKDTLN_STR-KORRFLAG sy-vline 
WA_SCOMPKDTLN_STR-AS4USER sy-vline 
WA_SCOMPKDTLN_STR-PDEVCLASS sy-vline 
WA_SCOMPKDTLN_STR-LAYER_TEXT sy-vline 
WA_SCOMPKDTLN_STR-DLVUNIT sy-vline 
WA_SCOMPKDTLN_STR-DLVU_TEXT sy-vline 
WA_SCOMPKDTLN_STR-COMP_POSID sy-vline 
WA_SCOMPKDTLN_STR-COMPONENT sy-vline 
WA_SCOMPKDTLN_STR-COMP_TEXT sy-vline 
WA_SCOMPKDTLN_STR-NAMESPACE sy-vline 
WA_SCOMPKDTLN_STR-TPCLASS sy-vline 
WA_SCOMPKDTLN_STR-PARENTCL sy-vline 
WA_SCOMPKDTLN_STR-PERMINHER sy-vline 
WA_SCOMPKDTLN_STR-INTFPREFX sy-vline 
WA_SCOMPKDTLN_STR-PACKTYPE sy-vline 
WA_SCOMPKDTLN_STR-PACKKIND sy-vline 
WA_SCOMPKDTLN_STR-RESTRICTED sy-vline 
WA_SCOMPKDTLN_STR-MAINPACK sy-vline 
WA_SCOMPKDTLN_STR-CREATED_BY sy-vline 
WA_SCOMPKDTLN_STR-CREATED_ON sy-vline 
WA_SCOMPKDTLN_STR-CHANGED_BY sy-vline 
WA_SCOMPKDTLN_STR-CHANGED_ON sy-vline 
WA_SCOMPKDTLN_STR-SRV_CHECK sy-vline 
WA_SCOMPKDTLN_STR-CLI_CHECK sy-vline 
WA_SCOMPKDTLN_STR-EXT_ALIAS sy-vline 
WA_SCOMPKDTLN_STR-PROJECT_GUID sy-vline 
WA_SCOMPKDTLN_STR-PROJECT_ID sy-vline 
WA_SCOMPKDTLN_STR-PROJECT_SHORT_TEXT sy-vline 
WA_SCOMPKDTLN_STR-PROJECT_PASSDOWN sy-vline 
WA_SCOMPKDTLN_STR-PROJECT_INHERITED sy-vline 
WA_SCOMPKDTLN_STR-SWITCH_ID sy-vline 
WA_SCOMPKDTLN_STR-SWITCH_SHORT_TEXT sy-vline 
WA_SCOMPKDTLN_STR-TRANSLATION_DEPTH sy-vline 
WA_SCOMPKDTLN_STR-TRANSLATION_DEPTH_TEXT sy-vline 
WA_SCOMPKDTLN_STR-AS4USER_DESCR sy-vline 
WA_SCOMPKDTLN_STR-SUPERPACKAGE_IN_TDEVC sy-vline      INTO ld_text SEPARATED BY SPACE.

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