ABAP Select data from SAP table FKK_DUNNING_INTEREST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK_DUNNING_INTEREST 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_DUNNING_INTEREST. 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_DUNNING_INTEREST 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_DUNNING_INTEREST TYPE STANDARD TABLE OF FKK_DUNNING_INTEREST,
      WA_FKK_DUNNING_INTEREST TYPE FKK_DUNNING_INTEREST,
      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_DUNNING_INTEREST> TYPE FKK_DUNNING_INTEREST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_DUNNING_INTEREST
*  INTO TABLE @DATA(IT_FKK_DUNNING_INTEREST2).
*--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_DUNNING_INTEREST INDEX 1 INTO DATA(WA_FKK_DUNNING_INTEREST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_DUNNING_INTEREST>-FKKKO = 1.
<FKK_DUNNING_INTEREST>-MANDT = 1.
<FKK_DUNNING_INTEREST>-OPBEL = 1.
<FKK_DUNNING_INTEREST>-FIKEY = 1.
<FKK_DUNNING_INTEREST>-APPLK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_DUNNING_INTEREST-BLART, sy-vline,
  WA_FKK_DUNNING_INTEREST-HERKF, sy-vline,
  WA_FKK_DUNNING_INTEREST-ERNAM, sy-vline,
  WA_FKK_DUNNING_INTEREST-CPUDT, sy-vline,
  WA_FKK_DUNNING_INTEREST-CPUTM, sy-vline,
  WA_FKK_DUNNING_INTEREST-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_DUNNING_INTEREST 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_DUNNING_INTEREST 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_DUNNING_INTEREST INTO WA_FKK_DUNNING_INTEREST.


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

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

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

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

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DUNNING_INTEREST-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DUNNING_INTEREST-AWSYS.
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_DUNNING_INTEREST_STR, 
FKKKO TYPE STRING,
MANDT TYPE STRING,
OPBEL TYPE STRING,
FIKEY TYPE STRING,
APPLK TYPE STRING,
BLART TYPE STRING,
HERKF TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
WAERS TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WWERT TYPE STRING,
XBLNR TYPE STRING,
RLGRD TYPE STRING,
ABGRD TYPE STRING,
XEIBH TYPE STRING,
XBWER TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
STBEL TYPE STRING,
STMET TYPE STRING,
BLTYP TYPE STRING,
AGINF TYPE STRING,
STBUK TYPE STRING,
STORB TYPE STRING,
APPDX TYPE STRING,
XMBEL TYPE STRING,
AWSYS TYPE STRING,
VERSN TYPE STRING,
BRANCH TYPE STRING,
C4EYE TYPE STRING,
C4EYP TYPE STRING,
TATYP TYPE STRING,
HBBLA TYPE STRING,
XCSHA TYPE STRING,
PRTID TYPE STRING,
UTLOC TYPE STRING,
XTXCH TYPE STRING,
VATDATE TYPE STRING,
FULFILLDATE TYPE STRING,
XDOCA TYPE STRING,
WNPER TYPE STRING,
XSING TYPE STRING,
KEYPP TYPE STRING,
_DATAAGING TYPE STRING,
XDAAG TYPE STRING,
TRSLA TYPE STRING,
FKKOPK TYPE STRING,
FKKOP TYPE STRING,
FKKIA TYPE STRING,
FKKIH TYPE STRING,
FKKOPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_DUNNING_INTEREST_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_DUNNING_INTEREST_STR-FKKKO sy-vline 
WA_FKK_DUNNING_INTEREST_STR-MANDT sy-vline 
WA_FKK_DUNNING_INTEREST_STR-OPBEL sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FIKEY sy-vline 
WA_FKK_DUNNING_INTEREST_STR-APPLK sy-vline 
WA_FKK_DUNNING_INTEREST_STR-BLART sy-vline 
WA_FKK_DUNNING_INTEREST_STR-HERKF sy-vline 
WA_FKK_DUNNING_INTEREST_STR-ERNAM sy-vline 
WA_FKK_DUNNING_INTEREST_STR-CPUDT sy-vline 
WA_FKK_DUNNING_INTEREST_STR-CPUTM sy-vline 
WA_FKK_DUNNING_INTEREST_STR-WAERS sy-vline 
WA_FKK_DUNNING_INTEREST_STR-BLDAT sy-vline 
WA_FKK_DUNNING_INTEREST_STR-BUDAT sy-vline 
WA_FKK_DUNNING_INTEREST_STR-WWERT sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XBLNR sy-vline 
WA_FKK_DUNNING_INTEREST_STR-RLGRD sy-vline 
WA_FKK_DUNNING_INTEREST_STR-ABGRD sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XEIBH sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XBWER sy-vline 
WA_FKK_DUNNING_INTEREST_STR-AWTYP sy-vline 
WA_FKK_DUNNING_INTEREST_STR-AWKEY sy-vline 
WA_FKK_DUNNING_INTEREST_STR-STBEL sy-vline 
WA_FKK_DUNNING_INTEREST_STR-STMET sy-vline 
WA_FKK_DUNNING_INTEREST_STR-BLTYP sy-vline 
WA_FKK_DUNNING_INTEREST_STR-AGINF sy-vline 
WA_FKK_DUNNING_INTEREST_STR-STBUK sy-vline 
WA_FKK_DUNNING_INTEREST_STR-STORB sy-vline 
WA_FKK_DUNNING_INTEREST_STR-APPDX sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XMBEL sy-vline 
WA_FKK_DUNNING_INTEREST_STR-AWSYS sy-vline 
WA_FKK_DUNNING_INTEREST_STR-VERSN sy-vline 
WA_FKK_DUNNING_INTEREST_STR-BRANCH sy-vline 
WA_FKK_DUNNING_INTEREST_STR-C4EYE sy-vline 
WA_FKK_DUNNING_INTEREST_STR-C4EYP sy-vline 
WA_FKK_DUNNING_INTEREST_STR-TATYP sy-vline 
WA_FKK_DUNNING_INTEREST_STR-HBBLA sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XCSHA sy-vline 
WA_FKK_DUNNING_INTEREST_STR-PRTID sy-vline 
WA_FKK_DUNNING_INTEREST_STR-UTLOC sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XTXCH sy-vline 
WA_FKK_DUNNING_INTEREST_STR-VATDATE sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FULFILLDATE sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XDOCA sy-vline 
WA_FKK_DUNNING_INTEREST_STR-WNPER sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XSING sy-vline 
WA_FKK_DUNNING_INTEREST_STR-KEYPP sy-vline 
WA_FKK_DUNNING_INTEREST_STR-_DATAAGING sy-vline 
WA_FKK_DUNNING_INTEREST_STR-XDAAG sy-vline 
WA_FKK_DUNNING_INTEREST_STR-TRSLA sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FKKOPK sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FKKOP sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FKKIA sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FKKIH sy-vline 
WA_FKK_DUNNING_INTEREST_STR-FKKOPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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