ABAP Select data from SAP table FKKOP_ENH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOP_ENH
*  INTO TABLE @DATA(IT_FKKOP_ENH2).
*--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_FKKOP_ENH INDEX 1 INTO DATA(WA_FKKOP_ENH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOP_ENH>-BROKR = 1.
<FKKOP_ENH>-OPORD = 1.
<FKKOP_ENH>-PPACC = 1.
<FKKOP_ENH>-PPRSN = 1.
<FKKOP_ENH>-PPRND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOP_ENH-LDGRP, sy-vline,
  WA_FKKOP_ENH-GSBER_MIG, sy-vline,
  WA_FKKOP_ENH-SEGMT_MIG, sy-vline,
  WA_FKKOP_ENH-PRCTR_MIG, sy-vline,
  WA_FKKOP_ENH-DISKEY, sy-vline,
  WA_FKKOP_ENH-DISTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOP_ENH 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_FKKOP_ENH 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_FKKOP_ENH INTO WA_FKKOP_ENH.


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

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

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

*Conversion exit ALPHA, internal->external for field PRCTR_MIG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKOP_ENH-PRCTR_MIG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOP_ENH-PRCTR_MIG.
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_FKKOP_ENH_STR, 
BROKR TYPE STRING,
OPORD TYPE STRING,
PPACC TYPE STRING,
PPRSN TYPE STRING,
PPRND TYPE STRING,
LDGRP TYPE STRING,
GSBER_MIG TYPE STRING,
SEGMT_MIG TYPE STRING,
PRCTR_MIG TYPE STRING,
DISKEY TYPE STRING,
DISTYP TYPE STRING,
DISPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOP_ENH_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_FKKOP_ENH_STR-BROKR sy-vline 
WA_FKKOP_ENH_STR-OPORD sy-vline 
WA_FKKOP_ENH_STR-PPACC sy-vline 
WA_FKKOP_ENH_STR-PPRSN sy-vline 
WA_FKKOP_ENH_STR-PPRND sy-vline 
WA_FKKOP_ENH_STR-LDGRP sy-vline 
WA_FKKOP_ENH_STR-GSBER_MIG sy-vline 
WA_FKKOP_ENH_STR-SEGMT_MIG sy-vline 
WA_FKKOP_ENH_STR-PRCTR_MIG sy-vline 
WA_FKKOP_ENH_STR-DISKEY sy-vline 
WA_FKKOP_ENH_STR-DISTYP sy-vline 
WA_FKKOP_ENH_STR-DISPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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