ABAP Select data from SAP table FKKDOC_SEL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKDOC_SEL
*  INTO TABLE @DATA(IT_FKKDOC_SEL2).
*--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_FKKDOC_SEL INDEX 1 INTO DATA(WA_FKKDOC_SEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKDOC_SEL>-DOTYP = 1.
<FKKDOC_SEL>-DOGUID = 1.
<FKKDOC_SEL>-BUKRS = 1.
<FKKDOC_SEL>-GPART = 1.
<FKKDOC_SEL>-VKONT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKDOC_SEL-SUBAP, sy-vline,
  WA_FKKDOC_SEL-VTREF, sy-vline,
  WA_FKKDOC_SEL-DELIV, sy-vline,
  WA_FKKDOC_SEL-ERFDT, sy-vline,
  WA_FKKDOC_SEL-CDATE, sy-vline,
  WA_FKKDOC_SEL-VLDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKDOC_SEL 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_FKKDOC_SEL 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_FKKDOC_SEL INTO WA_FKKDOC_SEL.


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

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKDOC_SEL-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKDOC_SEL-VTREF.
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_FKKDOC_SEL_STR, 
DOTYP TYPE STRING,
DOGUID TYPE STRING,
BUKRS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
SUBAP TYPE STRING,
VTREF TYPE STRING,
DELIV TYPE STRING,
ERFDT TYPE STRING,
CDATE TYPE STRING,
VLDTO TYPE STRING,
DMSGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKDOC_SEL_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_FKKDOC_SEL_STR-DOTYP sy-vline 
WA_FKKDOC_SEL_STR-DOGUID sy-vline 
WA_FKKDOC_SEL_STR-BUKRS sy-vline 
WA_FKKDOC_SEL_STR-GPART sy-vline 
WA_FKKDOC_SEL_STR-VKONT sy-vline 
WA_FKKDOC_SEL_STR-SUBAP sy-vline 
WA_FKKDOC_SEL_STR-VTREF sy-vline 
WA_FKKDOC_SEL_STR-DELIV sy-vline 
WA_FKKDOC_SEL_STR-ERFDT sy-vline 
WA_FKKDOC_SEL_STR-CDATE sy-vline 
WA_FKKDOC_SEL_STR-VLDTO sy-vline 
WA_FKKDOC_SEL_STR-DMSGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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