ABAP Select data from SAP table FKKINV_SRCDOC_CYCLE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_SRCDOC_CYCLE
*  INTO TABLE @DATA(IT_FKKINV_SRCDOC_CYCLE2).
*--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_FKKINV_SRCDOC_CYCLE INDEX 1 INTO DATA(WA_FKKINV_SRCDOC_CYCLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_SRCDOC_CYCLE>-SRCDOCCAT = 1.
<FKKINV_SRCDOC_CYCLE>-SRCDOCNO = 1.
<FKKINV_SRCDOC_CYCLE>-SRCDOCTYPE = 1.
<FKKINV_SRCDOC_CYCLE>-CYCREQ = 1.
<FKKINV_SRCDOC_CYCLE>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_SRCDOC_CYCLE-VKONT, sy-vline,
  WA_FKKINV_SRCDOC_CYCLE-SRCDOCCAT, sy-vline,
  WA_FKKINV_SRCDOC_CYCLE-SRCDOCNO, sy-vline,
  WA_FKKINV_SRCDOC_CYCLE-SRCDOCTYPE, sy-vline,
  WA_FKKINV_SRCDOC_CYCLE-GPART, sy-vline,
  WA_FKKINV_SRCDOC_CYCLE-PERIOD_FROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_SRCDOC_CYCLE 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_FKKINV_SRCDOC_CYCLE 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_FKKINV_SRCDOC_CYCLE INTO WA_FKKINV_SRCDOC_CYCLE.


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

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

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

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_SRCDOC_CYCLE-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_SRCDOC_CYCLE-GPART.
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_FKKINV_SRCDOC_CYCLE_STR, 
SRCDOCCAT TYPE STRING,
SRCDOCNO TYPE STRING,
SRCDOCTYPE TYPE STRING,
CYCREQ TYPE STRING,
MANDT TYPE STRING,
VKONT TYPE STRING,
SRCDOCCAT TYPE STRING,
SRCDOCNO TYPE STRING,
SRCDOCTYPE TYPE STRING,
GPART TYPE STRING,
PERIOD_FROM TYPE STRING,
PERIOD_TO TYPE STRING,
CYCLE_UUID TYPE STRING,
CYCLE TYPE STRING,
CYCLE_PERIODCAT TYPE STRING,
AKTYP TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
CRNAME TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
INVOICE_FIRST TYPE STRING,
INVDOCNO TYPE STRING,
INV_CRDATE TYPE STRING,
TRIGDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_SRCDOC_CYCLE_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_FKKINV_SRCDOC_CYCLE_STR-SRCDOCCAT sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-SRCDOCNO sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-SRCDOCTYPE sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CYCREQ sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-MANDT sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-VKONT sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-SRCDOCCAT sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-SRCDOCNO sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-SRCDOCTYPE sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-GPART sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-PERIOD_FROM sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-PERIOD_TO sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CYCLE_UUID sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CYCLE sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CYCLE_PERIODCAT sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-AKTYP sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-LAUFD sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-LAUFI sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CRNAME sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CRDATE sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-CRTIME sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-INVOICE_FIRST sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-INVDOCNO sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-INV_CRDATE sy-vline 
WA_FKKINV_SRCDOC_CYCLE_STR-TRIGDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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