ABAP Select data from SAP table FKK_PARTNER_BANK_CHANGES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_PARTNER_BANK_CHANGES
*  INTO TABLE @DATA(IT_FKK_PARTNER_BANK_CHANGES2).
*--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_FKK_PARTNER_BANK_CHANGES INDEX 1 INTO DATA(WA_FKK_PARTNER_BANK_CHANGES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_PARTNER_BANK_CHANGES>-CHANGE_INDICATOR = 1.
<FKK_PARTNER_BANK_CHANGES>-BKVID = 1.
<FKK_PARTNER_BANK_CHANGES>-OLD_BANK_DATA = 1.
<FKK_PARTNER_BANK_CHANGES>-MANDT = 1.
<FKK_PARTNER_BANK_CHANGES>-PARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_PARTNER_BANK_CHANGES-BKVID, sy-vline,
  WA_FKK_PARTNER_BANK_CHANGES-BANKS, sy-vline,
  WA_FKK_PARTNER_BANK_CHANGES-BANKL, sy-vline,
  WA_FKK_PARTNER_BANK_CHANGES-BANKN, sy-vline,
  WA_FKK_PARTNER_BANK_CHANGES-BKONT, sy-vline,
  WA_FKK_PARTNER_BANK_CHANGES-BKREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_PARTNER_BANK_CHANGES 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_FKK_PARTNER_BANK_CHANGES 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_FKK_PARTNER_BANK_CHANGES INTO WA_FKK_PARTNER_BANK_CHANGES.


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

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_PARTNER_BANK_CHANGES-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_PARTNER_BANK_CHANGES-PARTNER.
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_FKK_PARTNER_BANK_CHANGES_STR, 
CHANGE_INDICATOR TYPE STRING,
BKVID TYPE STRING,
OLD_BANK_DATA TYPE STRING,
MANDT TYPE STRING,
PARTNER TYPE STRING,
BKVID TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
BKREF TYPE STRING,
KOINH TYPE STRING,
BKEXT TYPE STRING,
XEZER TYPE STRING,
ACCNAME TYPE STRING,
MOVE_BKVID TYPE STRING,
PROTECT TYPE STRING,
ALIAS_IS_USED TYPE STRING,
BK_VALID_FROM TYPE STRING,
BK_VALID_TO TYPE STRING,
BK_MOVE_DATE TYPE STRING,
BP_BANK_GUID TYPE STRING,
IBAN TYPE STRING,
BANK_GUID TYPE STRING,
ACCOUNT_ID TYPE STRING,
CHECK_DIGIT TYPE STRING,
ACCOUNT_TYPE TYPE STRING,
BP_EEW_BUT0BK TYPE STRING,
NEW_BANK_DATA TYPE STRING,
MANDT TYPE STRING,
PARTNER TYPE STRING,
BKVID TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
BKREF TYPE STRING,
KOINH TYPE STRING,
BKEXT TYPE STRING,
XEZER TYPE STRING,
ACCNAME TYPE STRING,
MOVE_BKVID TYPE STRING,
PROTECT TYPE STRING,
ALIAS_IS_USED TYPE STRING,
BK_VALID_FROM TYPE STRING,
BK_VALID_TO TYPE STRING,
BK_MOVE_DATE TYPE STRING,
BP_BANK_GUID TYPE STRING,
IBAN TYPE STRING,
BANK_GUID TYPE STRING,
ACCOUNT_ID TYPE STRING,
CHECK_DIGIT TYPE STRING,
ACCOUNT_TYPE TYPE STRING,
BP_EEW_BUT0BK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_PARTNER_BANK_CHANGES_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_FKK_PARTNER_BANK_CHANGES_STR-CHANGE_INDICATOR sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKVID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-OLD_BANK_DATA sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-MANDT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-PARTNER sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKVID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANKS sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANKL sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANKN sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKONT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKREF sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-KOINH sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKEXT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-XEZER sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ACCNAME sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-MOVE_BKVID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-PROTECT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ALIAS_IS_USED sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BK_VALID_FROM sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BK_VALID_TO sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BK_MOVE_DATE sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BP_BANK_GUID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-IBAN sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANK_GUID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ACCOUNT_ID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-CHECK_DIGIT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ACCOUNT_TYPE sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BP_EEW_BUT0BK sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-NEW_BANK_DATA sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-MANDT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-PARTNER sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKVID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANKS sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANKL sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANKN sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKONT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKREF sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-KOINH sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BKEXT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-XEZER sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ACCNAME sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-MOVE_BKVID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-PROTECT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ALIAS_IS_USED sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BK_VALID_FROM sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BK_VALID_TO sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BK_MOVE_DATE sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BP_BANK_GUID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-IBAN sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BANK_GUID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ACCOUNT_ID sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-CHECK_DIGIT sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-ACCOUNT_TYPE sy-vline 
WA_FKK_PARTNER_BANK_CHANGES_STR-BP_EEW_BUT0BK sy-vline      INTO ld_text SEPARATED BY SPACE.

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