ABAP Select data from SAP table FKC_FDP_CORRESPNC_PARTNER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKC_FDP_CORRESPNC_PARTNER
*  INTO TABLE @DATA(IT_FKC_FDP_CORRESPNC_PARTNER2).
*--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_FKC_FDP_CORRESPNC_PARTNER INDEX 1 INTO DATA(WA_FKC_FDP_CORRESPNC_PARTNER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKC_FDP_CORRESPNC_PARTNER>-BUSINESSPARTNER = 1.
<FKC_FDP_CORRESPNC_PARTNER>-BUSINESSPARTNERCATEGORY = 1.
<FKC_FDP_CORRESPNC_PARTNER>-PERSONNUMBER = 1.
<FKC_FDP_CORRESPNC_PARTNER>-BUSINESSPARTNERNAME = 1.
<FKC_FDP_CORRESPNC_PARTNER>-BUSINESSPARTNERFULLNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKC_FDP_CORRESPNC_PARTNER-FIRSTNAME, sy-vline,
  WA_FKC_FDP_CORRESPNC_PARTNER-LASTNAME, sy-vline,
  WA_FKC_FDP_CORRESPNC_PARTNER-ORGANIZATIONBPNAME1, sy-vline,
  WA_FKC_FDP_CORRESPNC_PARTNER-ORGANIZATIONBPNAME2, sy-vline,
  WA_FKC_FDP_CORRESPNC_PARTNER-ORGANIZATIONBPNAME3, sy-vline,
  WA_FKC_FDP_CORRESPNC_PARTNER-ORGANIZATIONBPNAME4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKC_FDP_CORRESPNC_PARTNER 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_FKC_FDP_CORRESPNC_PARTNER 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_FKC_FDP_CORRESPNC_PARTNER INTO WA_FKC_FDP_CORRESPNC_PARTNER.


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

*Conversion exit ALPHA, internal->external for field PERSONNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKC_FDP_CORRESPNC_PARTNER-PERSONNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKC_FDP_CORRESPNC_PARTNER-PERSONNUMBER.
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_FKC_FDP_CORRESPNC_PARTNER_STR, 
BUSINESSPARTNER TYPE STRING,
BUSINESSPARTNERCATEGORY TYPE STRING,
PERSONNUMBER TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
BUSINESSPARTNERFULLNAME TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
ORGANIZATIONBPNAME3 TYPE STRING,
ORGANIZATIONBPNAME4 TYPE STRING,
ISNATURALPERSON TYPE STRING,
ISFEMALE TYPE STRING,
ISMALE TYPE STRING,
ISSEXUNKNOWN TYPE STRING,
GENDERCODENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKC_FDP_CORRESPNC_PARTNER_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_FKC_FDP_CORRESPNC_PARTNER_STR-BUSINESSPARTNER sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-BUSINESSPARTNERCATEGORY sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-PERSONNUMBER sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-BUSINESSPARTNERNAME sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-BUSINESSPARTNERFULLNAME sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-FIRSTNAME sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-LASTNAME sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ORGANIZATIONBPNAME3 sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ORGANIZATIONBPNAME4 sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ISNATURALPERSON sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ISFEMALE sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ISMALE sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-ISSEXUNKNOWN sy-vline 
WA_FKC_FDP_CORRESPNC_PARTNER_STR-GENDERCODENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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