ABAP Select data from SAP table FC04_S_KEY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FC04_S_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 FC04_S_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 FC04_S_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_FC04_S_KEY TYPE STANDARD TABLE OF FC04_S_KEY,
      WA_FC04_S_KEY TYPE FC04_S_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: <FC04_S_KEY> TYPE FC04_S_KEY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FC04_S_KEY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FC04_S_KEY
  INTO TABLE IT_FC04_S_KEY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FC04_S_KEY
*  INTO TABLE @DATA(IT_FC04_S_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_FC04_S_KEY INDEX 1 INTO DATA(WA_FC04_S_KEY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FC04_S_KEY ASSIGNING <FC04_S_KEY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FC04_S_KEY>-RITEM = 1.
<FC04_S_KEY>-SITYP = 1.
<FC04_S_KEY>-SUBIT = 1.
<FC04_S_KEY>-RTCUR = 1.
<FC04_S_KEY>-RBUPTR = 1.

ENDLOOP.

LOOP AT IT_FC04_S_KEY INTO WA_FC04_S_KEY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FC04_S_KEY-YRACQ, sy-vline,
  WA_FC04_S_KEY-PRACQ, sy-vline,
  WA_FC04_S_KEY-PLEVL, sy-vline,
  WA_FC04_S_KEY-RTFLG, sy-vline,
  WA_FC04_S_KEY-RCONGR, sy-vline,
  WA_FC04_S_KEY-COICU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FC04_S_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_FC04_S_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_FC04_S_KEY INTO WA_FC04_S_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 BFIMC, internal->external for field RITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC04_S_KEY-RITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC04_S_KEY-RITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RBUPTR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC04_S_KEY-RBUPTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC04_S_KEY-RBUPTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YRACQ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FC04_S_KEY-YRACQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC04_S_KEY-YRACQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RCONGR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC04_S_KEY-RCONGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC04_S_KEY-RCONGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field COICU
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC04_S_KEY-COICU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC04_S_KEY-COICU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FC04_S_KEY-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC04_S_KEY-RUNIT.
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_FC04_S_KEY_STR, 
RITEM TYPE STRING,
SITYP TYPE STRING,
SUBIT TYPE STRING,
RTCUR TYPE STRING,
RBUPTR TYPE STRING,
YRACQ TYPE STRING,
PRACQ TYPE STRING,
PLEVL TYPE STRING,
RTFLG TYPE STRING,
RCONGR TYPE STRING,
COICU TYPE STRING,
DOCTY TYPE STRING,
ROBUKRS TYPE STRING,
RUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FC04_S_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_FC04_S_KEY_STR-RITEM sy-vline 
WA_FC04_S_KEY_STR-SITYP sy-vline 
WA_FC04_S_KEY_STR-SUBIT sy-vline 
WA_FC04_S_KEY_STR-RTCUR sy-vline 
WA_FC04_S_KEY_STR-RBUPTR sy-vline 
WA_FC04_S_KEY_STR-YRACQ sy-vline 
WA_FC04_S_KEY_STR-PRACQ sy-vline 
WA_FC04_S_KEY_STR-PLEVL sy-vline 
WA_FC04_S_KEY_STR-RTFLG sy-vline 
WA_FC04_S_KEY_STR-RCONGR sy-vline 
WA_FC04_S_KEY_STR-COICU sy-vline 
WA_FC04_S_KEY_STR-DOCTY sy-vline 
WA_FC04_S_KEY_STR-ROBUKRS sy-vline 
WA_FC04_S_KEY_STR-RUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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