ABAP Select data from SAP table XKABASIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM XKABASIS
*  INTO TABLE @DATA(IT_XKABASIS2).
*--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_XKABASIS INDEX 1 INTO DATA(WA_XKABASIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<XKABASIS>-ZLNID = 1.
<XKABASIS>-BEWKZ = 1.
<XKABASIS>-KATEG = 1.
<XKABASIS>-ISTKUMKG = 1.
<XKABASIS>-ISTKUMKF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_XKABASIS-ISTJHRKG, sy-vline,
  WA_XKABASIS-ISTJHRKF, sy-vline,
  WA_XKABASIS-ISTPERKG, sy-vline,
  WA_XKABASIS-ISTPERKF, sy-vline,
  WA_XKABASIS-PLANBEWKG, sy-vline,
  WA_XKABASIS-PLANBEWKF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_XKABASIS 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_XKABASIS 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_XKABASIS INTO WA_XKABASIS.


*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 AC152, internal->external for field ISTKUMKG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-ISTKUMKG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-ISTKUMKG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ISTKUMKF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-ISTKUMKF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-ISTKUMKF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ISTJHRKG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-ISTJHRKG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-ISTJHRKG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ISTJHRKF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-ISTJHRKF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-ISTJHRKF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ISTPERKG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-ISTPERKG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-ISTPERKG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ISTPERKF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-ISTPERKF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-ISTPERKF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PLANBEWKG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-PLANBEWKG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-PLANBEWKG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PLANBEWKF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-PLANBEWKF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-PLANBEWKF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_XKABASIS-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XKABASIS-MEINH.
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_XKABASIS_STR, 
ZLNID TYPE STRING,
BEWKZ TYPE STRING,
KATEG TYPE STRING,
ISTKUMKG TYPE STRING,
ISTKUMKF TYPE STRING,
ISTJHRKG TYPE STRING,
ISTJHRKF TYPE STRING,
ISTPERKG TYPE STRING,
ISTPERKF TYPE STRING,
PLANBEWKG TYPE STRING,
PLANBEWKF TYPE STRING,
ISTMNGKUM TYPE STRING,
ISTMNGJHR TYPE STRING,
ISTMNGPER TYPE STRING,
PLANMNG TYPE STRING,
MEINH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_XKABASIS_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_XKABASIS_STR-ZLNID sy-vline 
WA_XKABASIS_STR-BEWKZ sy-vline 
WA_XKABASIS_STR-KATEG sy-vline 
WA_XKABASIS_STR-ISTKUMKG sy-vline 
WA_XKABASIS_STR-ISTKUMKF sy-vline 
WA_XKABASIS_STR-ISTJHRKG sy-vline 
WA_XKABASIS_STR-ISTJHRKF sy-vline 
WA_XKABASIS_STR-ISTPERKG sy-vline 
WA_XKABASIS_STR-ISTPERKF sy-vline 
WA_XKABASIS_STR-PLANBEWKG sy-vline 
WA_XKABASIS_STR-PLANBEWKF sy-vline 
WA_XKABASIS_STR-ISTMNGKUM sy-vline 
WA_XKABASIS_STR-ISTMNGJHR sy-vline 
WA_XKABASIS_STR-ISTMNGPER sy-vline 
WA_XKABASIS_STR-PLANMNG sy-vline 
WA_XKABASIS_STR-MEINH sy-vline      INTO ld_text SEPARATED BY SPACE.

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