ABAP Select data from SAP table KKA_EB01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKA_EB01 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_EB01. 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_EB01 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_EB01 TYPE STANDARD TABLE OF KKA_EB01,
      WA_KKA_EB01 TYPE KKA_EB01,
      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_EB01> TYPE KKA_EB01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKA_EB01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKA_EB01
  INTO TABLE IT_KKA_EB01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKA_EB01
*  INTO TABLE @DATA(IT_KKA_EB012).
*--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_EB01 INDEX 1 INTO DATA(WA_KKA_EB012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKA_EB01 ASSIGNING <KKA_EB01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKA_EB01>-ZLNID = 1.
<KKA_EB01>-BEWKZ = 1.
<KKA_EB01>-KATEG = 1.
<KKA_EB01>-ISTPERKG = 1.
<KKA_EB01>-ISTPERKF = 1.

ENDLOOP.

LOOP AT IT_KKA_EB01 INTO WA_KKA_EB01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKA_EB01-ISTMNGPER, sy-vline,
  WA_KKA_EB01-MEINH, sy-vline,
  WA_KKA_EB01-KKDUS, sy-vline,
  WA_KKA_EB01-ZLNI1, sy-vline,
  WA_KKA_EB01-KATE1, sy-vline,
  WA_KKA_EB01-KKDU1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKA_EB01 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_EB01 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_EB01 INTO WA_KKA_EB01.


*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 ISTPERKG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB01-ISTPERKG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB01-ISTPERKG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ISTPERKF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB01-ISTPERKF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB01-ISTPERKF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB01-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB01-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KKDUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB01-KKDUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB01-KKDUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KKDU1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB01-KKDU1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB01-KKDU1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEIN1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KKA_EB01-MEIN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKA_EB01-MEIN1.
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_EB01_STR, 
ZLNID TYPE STRING,
BEWKZ TYPE STRING,
KATEG TYPE STRING,
ISTPERKG TYPE STRING,
ISTPERKF TYPE STRING,
ISTMNGPER TYPE STRING,
MEINH TYPE STRING,
KKDUS TYPE STRING,
ZLNI1 TYPE STRING,
KATE1 TYPE STRING,
KKDU1 TYPE STRING,
MEIN1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKA_EB01_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_EB01_STR-ZLNID sy-vline 
WA_KKA_EB01_STR-BEWKZ sy-vline 
WA_KKA_EB01_STR-KATEG sy-vline 
WA_KKA_EB01_STR-ISTPERKG sy-vline 
WA_KKA_EB01_STR-ISTPERKF sy-vline 
WA_KKA_EB01_STR-ISTMNGPER sy-vline 
WA_KKA_EB01_STR-MEINH sy-vline 
WA_KKA_EB01_STR-KKDUS sy-vline 
WA_KKA_EB01_STR-ZLNI1 sy-vline 
WA_KKA_EB01_STR-KATE1 sy-vline 
WA_KKA_EB01_STR-KKDU1 sy-vline 
WA_KKA_EB01_STR-MEIN1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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