ABAP Select data from SAP table BKK_STR_BKK43_REL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKK_STR_BKK43_REL 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 BKK_STR_BKK43_REL. 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 BKK_STR_BKK43_REL 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_BKK_STR_BKK43_REL TYPE STANDARD TABLE OF BKK_STR_BKK43_REL,
      WA_BKK_STR_BKK43_REL TYPE BKK_STR_BKK43_REL,
      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: <BKK_STR_BKK43_REL> TYPE BKK_STR_BKK43_REL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKK_STR_BKK43_REL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKK_STR_BKK43_REL
  INTO TABLE IT_BKK_STR_BKK43_REL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKK_STR_BKK43_REL
*  INTO TABLE @DATA(IT_BKK_STR_BKK43_REL2).
*--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_BKK_STR_BKK43_REL INDEX 1 INTO DATA(WA_BKK_STR_BKK43_REL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKK_STR_BKK43_REL ASSIGNING <BKK_STR_BKK43_REL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKK_STR_BKK43_REL>-REF_ACCATG = 1.
<BKK_STR_BKK43_REL>-RVALIDTO = 1.
<BKK_STR_BKK43_REL>-RVALIDFROM = 1.
<BKK_STR_BKK43_REL>-NBKKRS = 1.
<BKK_STR_BKK43_REL>-NACNUM_INT = 1.

ENDLOOP.

LOOP AT IT_BKK_STR_BKK43_REL INTO WA_BKK_STR_BKK43_REL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKK_STR_BKK43_REL-INT_POST_METH, sy-vline,
  WA_BKK_STR_BKK43_REL-NBANKS, sy-vline,
  WA_BKK_STR_BKK43_REL-NBANKL, sy-vline,
  WA_BKK_STR_BKK43_REL-NSWIFT, sy-vline,
  WA_BKK_STR_BKK43_REL-NACNUM, sy-vline,
  WA_BKK_STR_BKK43_REL-NBKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKK_STR_BKK43_REL 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_BKK_STR_BKK43_REL 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_BKK_STR_BKK43_REL INTO WA_BKK_STR_BKK43_REL.


*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 NACNUM_INT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_BKK43_REL-NACNUM_INT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_BKK43_REL-NACNUM_INT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ACEXT, internal->external for field NACNUM
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_BKK43_REL-NACNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_BKK43_REL-NACNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NIBAN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_BKK43_REL-NIBAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_BKK43_REL-NIBAN.
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_BKK_STR_BKK43_REL_STR, 
REF_ACCATG TYPE STRING,
RVALIDTO TYPE STRING,
RVALIDFROM TYPE STRING,
NBKKRS TYPE STRING,
NACNUM_INT TYPE STRING,
INT_POST_METH TYPE STRING,
NBANKS TYPE STRING,
NBANKL TYPE STRING,
NSWIFT TYPE STRING,
NACNUM TYPE STRING,
NBKS TYPE STRING,
NIBAN TYPE STRING,
NACHOLD TYPE STRING,
TRNSTYPE TYPE STRING,
TRNSTYPE2 TYPE STRING,
PAYMETHOD TYPE STRING,
XCHKDIG_R TYPE STRING,
MANDATE_ID TYPE STRING,
UCI TYPE STRING,
ACC_CLOS_NOTE1 TYPE STRING,
ACC_CLOS_NOTE2 TYPE STRING,
ACC_CLOS_NOTE3 TYPE STRING,
ACC_CLOS_NOTE4 TYPE STRING,
PUBLIC_CONT_L1 TYPE STRING,
PUBLIC_CONT_L2 TYPE STRING,
PUBLIC_CONT_L3 TYPE STRING,
PUBLIC_CONT_L4 TYPE STRING,
PUBLIC_CONT_S1 TYPE STRING,
PUBLIC_CONT_S2 TYPE STRING,
RELEASE_STATUS TYPE STRING,
DECLINE_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKK_STR_BKK43_REL_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_BKK_STR_BKK43_REL_STR-REF_ACCATG sy-vline 
WA_BKK_STR_BKK43_REL_STR-RVALIDTO sy-vline 
WA_BKK_STR_BKK43_REL_STR-RVALIDFROM sy-vline 
WA_BKK_STR_BKK43_REL_STR-NBKKRS sy-vline 
WA_BKK_STR_BKK43_REL_STR-NACNUM_INT sy-vline 
WA_BKK_STR_BKK43_REL_STR-INT_POST_METH sy-vline 
WA_BKK_STR_BKK43_REL_STR-NBANKS sy-vline 
WA_BKK_STR_BKK43_REL_STR-NBANKL sy-vline 
WA_BKK_STR_BKK43_REL_STR-NSWIFT sy-vline 
WA_BKK_STR_BKK43_REL_STR-NACNUM sy-vline 
WA_BKK_STR_BKK43_REL_STR-NBKS sy-vline 
WA_BKK_STR_BKK43_REL_STR-NIBAN sy-vline 
WA_BKK_STR_BKK43_REL_STR-NACHOLD sy-vline 
WA_BKK_STR_BKK43_REL_STR-TRNSTYPE sy-vline 
WA_BKK_STR_BKK43_REL_STR-TRNSTYPE2 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PAYMETHOD sy-vline 
WA_BKK_STR_BKK43_REL_STR-XCHKDIG_R sy-vline 
WA_BKK_STR_BKK43_REL_STR-MANDATE_ID sy-vline 
WA_BKK_STR_BKK43_REL_STR-UCI sy-vline 
WA_BKK_STR_BKK43_REL_STR-ACC_CLOS_NOTE1 sy-vline 
WA_BKK_STR_BKK43_REL_STR-ACC_CLOS_NOTE2 sy-vline 
WA_BKK_STR_BKK43_REL_STR-ACC_CLOS_NOTE3 sy-vline 
WA_BKK_STR_BKK43_REL_STR-ACC_CLOS_NOTE4 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PUBLIC_CONT_L1 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PUBLIC_CONT_L2 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PUBLIC_CONT_L3 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PUBLIC_CONT_L4 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PUBLIC_CONT_S1 sy-vline 
WA_BKK_STR_BKK43_REL_STR-PUBLIC_CONT_S2 sy-vline 
WA_BKK_STR_BKK43_REL_STR-RELEASE_STATUS sy-vline 
WA_BKK_STR_BKK43_REL_STR-DECLINE_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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