ABAP Select data from SAP table KKATATEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKATATEN
*  INTO TABLE @DATA(IT_KKATATEN2).
*--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_KKATATEN INDEX 1 INTO DATA(WA_KKATATEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKATATEN>-OBJNR = 1.
<KKATATEN>-KKABG = 1.
<KKATATEN>-KABGS = 1.
<KKATATEN>-BSKZD = 1.
<KKATATEN>-VORP_AE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKATATEN-LFDP_AE, sy-vline,
  WA_KKATATEN-FLGP_AE, sy-vline,
  WA_KKATATEN-VORP_BB, sy-vline,
  WA_KKATATEN-LFDP_BB, sy-vline,
  WA_KKATATEN-FLGP_BB, sy-vline,
  WA_KKATATEN-VORP_BV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKATATEN 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_KKATATEN 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_KKATATEN INTO WA_KKATATEN.


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit AC152, internal->external for field GES_PP
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATATEN-GES_PP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATATEN-GES_PP.
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_KKATATEN_STR, 
OBJNR TYPE STRING,
KKABG TYPE STRING,
KABGS TYPE STRING,
BSKZD TYPE STRING,
VORP_AE TYPE STRING,
LFDP_AE TYPE STRING,
FLGP_AE TYPE STRING,
VORP_BB TYPE STRING,
LFDP_BB TYPE STRING,
FLGP_BB TYPE STRING,
VORP_BV TYPE STRING,
LFDP_BV TYPE STRING,
FLGP_BV TYPE STRING,
VORP_I TYPE STRING,
LFDP_I TYPE STRING,
FLGP_I TYPE STRING,
VORP_N TYPE STRING,
LFDP_N TYPE STRING,
FLGP_N TYPE STRING,
VORP_A TYPE STRING,
LFDP_A TYPE STRING,
FLGP_A TYPE STRING,
VORP_F TYPE STRING,
LFDP_F TYPE STRING,
FLGP_F TYPE STRING,
VORP_W TYPE STRING,
LFDP_W TYPE STRING,
FLGP_W TYPE STRING,
GES_PG TYPE STRING,
GES_PP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKATATEN_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_KKATATEN_STR-OBJNR sy-vline 
WA_KKATATEN_STR-KKABG sy-vline 
WA_KKATATEN_STR-KABGS sy-vline 
WA_KKATATEN_STR-BSKZD sy-vline 
WA_KKATATEN_STR-VORP_AE sy-vline 
WA_KKATATEN_STR-LFDP_AE sy-vline 
WA_KKATATEN_STR-FLGP_AE sy-vline 
WA_KKATATEN_STR-VORP_BB sy-vline 
WA_KKATATEN_STR-LFDP_BB sy-vline 
WA_KKATATEN_STR-FLGP_BB sy-vline 
WA_KKATATEN_STR-VORP_BV sy-vline 
WA_KKATATEN_STR-LFDP_BV sy-vline 
WA_KKATATEN_STR-FLGP_BV sy-vline 
WA_KKATATEN_STR-VORP_I sy-vline 
WA_KKATATEN_STR-LFDP_I sy-vline 
WA_KKATATEN_STR-FLGP_I sy-vline 
WA_KKATATEN_STR-VORP_N sy-vline 
WA_KKATATEN_STR-LFDP_N sy-vline 
WA_KKATATEN_STR-FLGP_N sy-vline 
WA_KKATATEN_STR-VORP_A sy-vline 
WA_KKATATEN_STR-LFDP_A sy-vline 
WA_KKATATEN_STR-FLGP_A sy-vline 
WA_KKATATEN_STR-VORP_F sy-vline 
WA_KKATATEN_STR-LFDP_F sy-vline 
WA_KKATATEN_STR-FLGP_F sy-vline 
WA_KKATATEN_STR-VORP_W sy-vline 
WA_KKATATEN_STR-LFDP_W sy-vline 
WA_KKATATEN_STR-FLGP_W sy-vline 
WA_KKATATEN_STR-GES_PG sy-vline 
WA_KKATATEN_STR-GES_PP sy-vline      INTO ld_text SEPARATED BY SPACE.

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