ABAP Select data from SAP table KKA_EB02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKA_EB02 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 KKA_EB02. 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 KKA_EB02 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_KKA_EB02 TYPE STANDARD TABLE OF KKA_EB02,
      WA_KKA_EB02 TYPE KKA_EB02,
      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: <KKA_EB02> TYPE KKA_EB02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKA_EB02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKA_EB02
  INTO TABLE IT_KKA_EB02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKA_EB02
*  INTO TABLE @DATA(IT_KKA_EB022).
*--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_KKA_EB02 INDEX 1 INTO DATA(WA_KKA_EB022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKA_EB02 ASSIGNING <KKA_EB02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKA_EB02>-KSTAR = 1.
<KKA_EB02>-HKGRP = 1.
<KKA_EB02>-KOSTL = 1.
<KKA_EB02>-LSTAR = 1.
<KKA_EB02>-PRZNR = 1.

ENDLOOP.

LOOP AT IT_KKA_EB02 INTO WA_KKA_EB02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKA_EB02-BEKNZ, sy-vline,
  WA_KKA_EB02-BELTP, sy-vline,
  WA_KKA_EB02-BEMOT, sy-vline,
  WA_KKA_EB02-AUMOT, sy-vline,
  WA_KKA_EB02-GJAHR, sy-vline,
  WA_KKA_EB02-PERIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKA_EB02 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_KKA_EB02 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_KKA_EB02 INTO WA_KKA_EB02.


*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 KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BEKNZ, internal->external for field BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-BEKNZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGPER
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-WKGPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-WKGPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKFPER
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB02-WKFPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB02-WKFPER.
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_KKA_EB02_STR, 
KSTAR TYPE STRING,
HKGRP TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
PRZNR TYPE STRING,
BEKNZ TYPE STRING,
BELTP TYPE STRING,
BEMOT TYPE STRING,
AUMOT TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
WKGPER TYPE STRING,
WKFPER TYPE STRING,
MEGPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKA_EB02_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_KKA_EB02_STR-KSTAR sy-vline 
WA_KKA_EB02_STR-HKGRP sy-vline 
WA_KKA_EB02_STR-KOSTL sy-vline 
WA_KKA_EB02_STR-LSTAR sy-vline 
WA_KKA_EB02_STR-PRZNR sy-vline 
WA_KKA_EB02_STR-BEKNZ sy-vline 
WA_KKA_EB02_STR-BELTP sy-vline 
WA_KKA_EB02_STR-BEMOT sy-vline 
WA_KKA_EB02_STR-AUMOT sy-vline 
WA_KKA_EB02_STR-GJAHR sy-vline 
WA_KKA_EB02_STR-PERIO sy-vline 
WA_KKA_EB02_STR-WKGPER sy-vline 
WA_KKA_EB02_STR-WKFPER sy-vline 
WA_KKA_EB02_STR-MEGPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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