ABAP Select data from SAP table KKA3000 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKA3000 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 KKA3000. 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 KKA3000 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_KKA3000 TYPE STANDARD TABLE OF KKA3000,
      WA_KKA3000 TYPE KKA3000,
      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: <KKA3000> TYPE KKA3000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKA3000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKA3000
  INTO TABLE IT_KKA3000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKA3000
*  INTO TABLE @DATA(IT_KKA30002).
*--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_KKA3000 INDEX 1 INTO DATA(WA_KKA30002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKA3000 ASSIGNING <KKA3000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKA3000>-ABGTY = 1.
<KKA3000>-AWKUS = 1.
<KKA3000>-ZLNID = 1.
<KKA3000>-BEWKZ = 1.
<KKA3000>-ABKAT = 1.

ENDLOOP.

LOOP AT IT_KKA3000 INTO WA_KKA3000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKA3000-KATEG, sy-vline,
  WA_KKA3000-WRT, sy-vline,
  WA_KKA3000-WRTF, sy-vline,
  WA_KKA3000-KSTAR, sy-vline,
  WA_KKA3000-LFDNR, sy-vline,
  WA_KKA3000-WRTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKA3000 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_KKA3000 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_KKA3000 INTO WA_KKA3000.


*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 ABKAT, internal->external for field ABKAT
CALL FUNCTION 'CONVERSION_EXIT_ABKAT_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-ABKAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-ABKAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-WRT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-WRT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRTF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-WRTF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-WRTF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRTH
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-WRTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-WRTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRTKH
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-WRTKH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-WRTKH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRTFH
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA3000-WRTFH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA3000-WRTFH.
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_KKA3000_STR, 
ABGTY TYPE STRING,
AWKUS TYPE STRING,
ZLNID TYPE STRING,
BEWKZ TYPE STRING,
ABKAT TYPE STRING,
KATEG TYPE STRING,
WRT TYPE STRING,
WRTF TYPE STRING,
KSTAR TYPE STRING,
LFDNR TYPE STRING,
WRTH TYPE STRING,
WRTKH TYPE STRING,
MNG TYPE STRING,
MEINH TYPE STRING,
WRTFH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKA3000_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_KKA3000_STR-ABGTY sy-vline 
WA_KKA3000_STR-AWKUS sy-vline 
WA_KKA3000_STR-ZLNID sy-vline 
WA_KKA3000_STR-BEWKZ sy-vline 
WA_KKA3000_STR-ABKAT sy-vline 
WA_KKA3000_STR-KATEG sy-vline 
WA_KKA3000_STR-WRT sy-vline 
WA_KKA3000_STR-WRTF sy-vline 
WA_KKA3000_STR-KSTAR sy-vline 
WA_KKA3000_STR-LFDNR sy-vline 
WA_KKA3000_STR-WRTH sy-vline 
WA_KKA3000_STR-WRTKH sy-vline 
WA_KKA3000_STR-MNG sy-vline 
WA_KKA3000_STR-MEINH sy-vline 
WA_KKA3000_STR-WRTFH sy-vline      INTO ld_text SEPARATED BY SPACE.

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