ABAP Select data from SAP table SI_FKKOPR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SI_FKKOPR
*  INTO TABLE @DATA(IT_SI_FKKOPR2).
*--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_SI_FKKOPR INDEX 1 INTO DATA(WA_SI_FKKOPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SI_FKKOPR>-DEAKTIV = 1.
<SI_FKKOPR>-SGRKEY = 1.
<SI_FKKOPR>-SOLLDAT = 1.
<SI_FKKOPR>-RECPT = 1.
<SI_FKKOPR>-TOCOLLECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SI_FKKOPR-EINMALANF, sy-vline,
  WA_SI_FKKOPR-VORAUSZAHL, sy-vline,
  WA_SI_FKKOPR-APERIODIC, sy-vline,
  WA_SI_FKKOPR-ABRABS, sy-vline,
  WA_SI_FKKOPR-GRBBP, sy-vline,
  WA_SI_FKKOPR-ASMETH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SI_FKKOPR 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_SI_FKKOPR 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_SI_FKKOPR INTO WA_SI_FKKOPR.


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

*Conversion exit ALPHA, internal->external for field RECPT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_FKKOPR-RECPT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_FKKOPR-RECPT.
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_SI_FKKOPR_STR, 
DEAKTIV TYPE STRING,
SGRKEY TYPE STRING,
SOLLDAT TYPE STRING,
RECPT TYPE STRING,
TOCOLLECT TYPE STRING,
EINMALANF TYPE STRING,
VORAUSZAHL TYPE STRING,
APERIODIC TYPE STRING,
ABRABS TYPE STRING,
GRBBP TYPE STRING,
ASMETH TYPE STRING,
INT_CROSSREFNO TYPE STRING,
ETHPPM TYPE STRING,
PAYFREQID TYPE STRING,
INVOICING_PARTY TYPE STRING,
PPMST TYPE STRING,
LOGNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SI_FKKOPR_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_SI_FKKOPR_STR-DEAKTIV sy-vline 
WA_SI_FKKOPR_STR-SGRKEY sy-vline 
WA_SI_FKKOPR_STR-SOLLDAT sy-vline 
WA_SI_FKKOPR_STR-RECPT sy-vline 
WA_SI_FKKOPR_STR-TOCOLLECT sy-vline 
WA_SI_FKKOPR_STR-EINMALANF sy-vline 
WA_SI_FKKOPR_STR-VORAUSZAHL sy-vline 
WA_SI_FKKOPR_STR-APERIODIC sy-vline 
WA_SI_FKKOPR_STR-ABRABS sy-vline 
WA_SI_FKKOPR_STR-GRBBP sy-vline 
WA_SI_FKKOPR_STR-ASMETH sy-vline 
WA_SI_FKKOPR_STR-INT_CROSSREFNO sy-vline 
WA_SI_FKKOPR_STR-ETHPPM sy-vline 
WA_SI_FKKOPR_STR-PAYFREQID sy-vline 
WA_SI_FKKOPR_STR-INVOICING_PARTY sy-vline 
WA_SI_FKKOPR_STR-PPMST sy-vline 
WA_SI_FKKOPR_STR-LOGNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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