ABAP Select data from SAP table COSXA_KEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COSXA_KEY
*  INTO TABLE @DATA(IT_COSXA_KEY2).
*--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_COSXA_KEY INDEX 1 INTO DATA(WA_COSXA_KEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COSXA_KEY>-LEDNR = 1.
<COSXA_KEY>-OBJNR = 1.
<COSXA_KEY>-GJAHR = 1.
<COSXA_KEY>-WRTTP = 1.
<COSXA_KEY>-VERSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COSXA_KEY-KSTAR, sy-vline,
  WA_COSXA_KEY-HRKFT, sy-vline,
  WA_COSXA_KEY-VRGNG, sy-vline,
  WA_COSXA_KEY-VBUND, sy-vline,
  WA_COSXA_KEY-PARGB, sy-vline,
  WA_COSXA_KEY-BEKNZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COSXA_KEY 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_COSXA_KEY 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_COSXA_KEY INTO WA_COSXA_KEY.


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

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

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

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

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

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

*Conversion exit BEKNZ, internal->external for field BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_COSXA_KEY-BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COSXA_KEY-BEKNZ.
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_COSXA_KEY_STR, 
LEDNR TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
KSTAR TYPE STRING,
HRKFT TYPE STRING,
VRGNG TYPE STRING,
VBUND TYPE STRING,
PARGB TYPE STRING,
BEKNZ TYPE STRING,
TWAER TYPE STRING,
RZTYP TYPE STRING,
RZVAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COSXA_KEY_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_COSXA_KEY_STR-LEDNR sy-vline 
WA_COSXA_KEY_STR-OBJNR sy-vline 
WA_COSXA_KEY_STR-GJAHR sy-vline 
WA_COSXA_KEY_STR-WRTTP sy-vline 
WA_COSXA_KEY_STR-VERSN sy-vline 
WA_COSXA_KEY_STR-KSTAR sy-vline 
WA_COSXA_KEY_STR-HRKFT sy-vline 
WA_COSXA_KEY_STR-VRGNG sy-vline 
WA_COSXA_KEY_STR-VBUND sy-vline 
WA_COSXA_KEY_STR-PARGB sy-vline 
WA_COSXA_KEY_STR-BEKNZ sy-vline 
WA_COSXA_KEY_STR-TWAER sy-vline 
WA_COSXA_KEY_STR-RZTYP sy-vline 
WA_COSXA_KEY_STR-RZVAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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