ABAP Select data from SAP table /KYK/ISS_RKAEP000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /KYK/ISS_RKAEP000 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 /KYK/ISS_RKAEP000. 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 /KYK/ISS_RKAEP000 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_/KYK/ISS_RKAEP000 TYPE STANDARD TABLE OF /KYK/ISS_RKAEP000,
      WA_/KYK/ISS_RKAEP000 TYPE /KYK/ISS_RKAEP000,
      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: </KYK/ISS_RKAEP000> TYPE /KYK/ISS_RKAEP000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/KYK/ISS_RKAEP000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /KYK/ISS_RKAEP000
  INTO TABLE IT_/KYK/ISS_RKAEP000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /KYK/ISS_RKAEP000
*  INTO TABLE @DATA(IT_/KYK/ISS_RKAEP0002).
*--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_/KYK/ISS_RKAEP000 INDEX 1 INTO DATA(WA_/KYK/ISS_RKAEP0002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/KYK/ISS_RKAEP000 ASSIGNING </KYK/ISS_RKAEP000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</KYK/ISS_RKAEP000>-KSTAR = 1.
</KYK/ISS_RKAEP000>-CEL_KTXT = 1.
</KYK/ISS_RKAEP000>-WRGBTR = 1.
</KYK/ISS_RKAEP000>-MBGBTR = 1.
</KYK/ISS_RKAEP000>-MEINB = 1.

ENDLOOP.

LOOP AT IT_/KYK/ISS_RKAEP000 INTO WA_/KYK/ISS_RKAEP000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/KYK/ISS_RKAEP000-GKOAR, sy-vline,
  WA_/KYK/ISS_RKAEP000-GKONT, sy-vline,
  WA_/KYK/ISS_RKAEP000-GKONT_KTXT, sy-vline,
  WA_/KYK/ISS_RKAEP000-KOSTL, sy-vline,
  WA_/KYK/ISS_RKAEP000-POBART, sy-vline,
  WA_/KYK/ISS_RKAEP000-CEL_LTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/KYK/ISS_RKAEP000 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_/KYK/ISS_RKAEP000 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_/KYK/ISS_RKAEP000 INTO WA_/KYK/ISS_RKAEP000.


*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_/KYK/ISS_RKAEP000-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-WRGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-WRGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-MEINB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-MEINB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-GKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-GKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBART, internal->external for field POBART
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-POBART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-POBART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_RKAEP000-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_RKAEP000-AUFNR.
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_/KYK/ISS_RKAEP000_STR, 
KSTAR TYPE STRING,
CEL_KTXT TYPE STRING,
WRGBTR TYPE STRING,
MBGBTR TYPE STRING,
MEINB TYPE STRING,
GKOAR TYPE STRING,
GKONT TYPE STRING,
GKONT_KTXT TYPE STRING,
KOSTL TYPE STRING,
POBART TYPE STRING,
CEL_LTXT TYPE STRING,
GKONT_LTXT TYPE STRING,
POBID TYPE STRING,
RWAER TYPE STRING,
EBELN TYPE STRING,
EBTXT TYPE STRING,
MAT_TXT TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
AUFNR TYPE STRING,
LSTAR TYPE STRING,
POB_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/KYK/ISS_RKAEP000_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_/KYK/ISS_RKAEP000_STR-KSTAR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-CEL_KTXT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-WRGBTR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-MBGBTR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-MEINB sy-vline 
WA_/KYK/ISS_RKAEP000_STR-GKOAR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-GKONT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-GKONT_KTXT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-KOSTL sy-vline 
WA_/KYK/ISS_RKAEP000_STR-POBART sy-vline 
WA_/KYK/ISS_RKAEP000_STR-CEL_LTXT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-GKONT_LTXT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-POBID sy-vline 
WA_/KYK/ISS_RKAEP000_STR-RWAER sy-vline 
WA_/KYK/ISS_RKAEP000_STR-EBELN sy-vline 
WA_/KYK/ISS_RKAEP000_STR-EBTXT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-MAT_TXT sy-vline 
WA_/KYK/ISS_RKAEP000_STR-WERKS sy-vline 
WA_/KYK/ISS_RKAEP000_STR-MATNR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-AUFNR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-LSTAR sy-vline 
WA_/KYK/ISS_RKAEP000_STR-POB_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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