ABAP Select data from SAP table KSPP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KSPP
*  INTO TABLE @DATA(IT_KSPP2).
*--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_KSPP INDEX 1 INTO DATA(WA_KSPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KSPP>-FROM_D = 1.
<KSPP>-TO_D = 1.
<KSPP>-TO_P = 1.
<KSPP>-FROM_P = 1.
<KSPP>-VERSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KSPP-KOKRS, sy-vline,
  WA_KSPP-WERKS, sy-vline,
  WA_KSPP-BATCH, sy-vline,
  WA_KSPP-GJAHR, sy-vline,
  WA_KSPP-LIST, sy-vline,
  WA_KSPP-PCORR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KSPP 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_KSPP 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_KSPP INTO WA_KSPP.


*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 VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KSPP-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KSPP-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KSPP-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KSPP-GJAHR.
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_KSPP_STR, 
FROM_D TYPE STRING,
TO_D TYPE STRING,
TO_P TYPE STRING,
FROM_P TYPE STRING,
VERSN TYPE STRING,
KOKRS TYPE STRING,
WERKS TYPE STRING,
BATCH TYPE STRING,
GJAHR TYPE STRING,
LIST TYPE STRING,
PCORR TYPE STRING,
OBJCHK TYPE STRING,
TESTLAUF TYPE STRING,
RFC_GROUP TYPE STRING,
DETAIL_KL TYPE STRING,
DETAIL_MW TYPE STRING,
DETAIL_PO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KSPP_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_KSPP_STR-FROM_D sy-vline 
WA_KSPP_STR-TO_D sy-vline 
WA_KSPP_STR-TO_P sy-vline 
WA_KSPP_STR-FROM_P sy-vline 
WA_KSPP_STR-VERSN sy-vline 
WA_KSPP_STR-KOKRS sy-vline 
WA_KSPP_STR-WERKS sy-vline 
WA_KSPP_STR-BATCH sy-vline 
WA_KSPP_STR-GJAHR sy-vline 
WA_KSPP_STR-LIST sy-vline 
WA_KSPP_STR-PCORR sy-vline 
WA_KSPP_STR-OBJCHK sy-vline 
WA_KSPP_STR-TESTLAUF sy-vline 
WA_KSPP_STR-RFC_GROUP sy-vline 
WA_KSPP_STR-DETAIL_KL sy-vline 
WA_KSPP_STR-DETAIL_MW sy-vline 
WA_KSPP_STR-DETAIL_PO sy-vline      INTO ld_text SEPARATED BY SPACE.

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