ABAP Select data from SAP table BKKITAI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKKITAI
*  INTO TABLE @DATA(IT_BKKITAI2).
*--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_BKKITAI INDEX 1 INTO DATA(WA_BKKITAI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKKITAI>-MANDT = 1.
<BKKITAI>-BKKRS = 1.
<BKKITAI>-DOCNO_AI = 1.
<BKKITAI>-POSNO = 1.
<BKKITAI>-ACNUM_INT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKKITAI-BUPA_NO, sy-vline,
  WA_BKKITAI-DATE_VALUE, sy-vline,
  WA_BKKITAI-DATE_POST, sy-vline,
  WA_BKKITAI-TCUR, sy-vline,
  WA_BKKITAI-T_AMOUNT, sy-vline,
  WA_BKKITAI-ACUR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKKITAI 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_BKKITAI 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_BKKITAI INTO WA_BKKITAI.


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

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

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

*Conversion exit ALPHA, internal->external for field REF_IBAN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKKITAI-REF_IBAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKKITAI-REF_IBAN.
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_BKKITAI_STR, 
MANDT TYPE STRING,
BKKRS TYPE STRING,
DOCNO_AI TYPE STRING,
POSNO TYPE STRING,
ACNUM_INT TYPE STRING,
BUPA_NO TYPE STRING,
DATE_VALUE TYPE STRING,
DATE_POST TYPE STRING,
TCUR TYPE STRING,
T_AMOUNT TYPE STRING,
ACUR TYPE STRING,
A_AMOUNT TYPE STRING,
MEDIUM TYPE STRING,
PAYMETHOD TYPE STRING,
TRNSTYPE TYPE STRING,
BUTXT TYPE STRING,
STATUS TYPE STRING,
PROCESS TYPE STRING,
REF_BANKS TYPE STRING,
REF_BANKL TYPE STRING,
REF_ACEXT TYPE STRING,
REF_IBAN TYPE STRING,
REF_NAME TYPE STRING,
CRUSR TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
CHUSR TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
RLUSR TYPE STRING,
RLDAT TYPE STRING,
RLTIM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKKITAI_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_BKKITAI_STR-MANDT sy-vline 
WA_BKKITAI_STR-BKKRS sy-vline 
WA_BKKITAI_STR-DOCNO_AI sy-vline 
WA_BKKITAI_STR-POSNO sy-vline 
WA_BKKITAI_STR-ACNUM_INT sy-vline 
WA_BKKITAI_STR-BUPA_NO sy-vline 
WA_BKKITAI_STR-DATE_VALUE sy-vline 
WA_BKKITAI_STR-DATE_POST sy-vline 
WA_BKKITAI_STR-TCUR sy-vline 
WA_BKKITAI_STR-T_AMOUNT sy-vline 
WA_BKKITAI_STR-ACUR sy-vline 
WA_BKKITAI_STR-A_AMOUNT sy-vline 
WA_BKKITAI_STR-MEDIUM sy-vline 
WA_BKKITAI_STR-PAYMETHOD sy-vline 
WA_BKKITAI_STR-TRNSTYPE sy-vline 
WA_BKKITAI_STR-BUTXT sy-vline 
WA_BKKITAI_STR-STATUS sy-vline 
WA_BKKITAI_STR-PROCESS sy-vline 
WA_BKKITAI_STR-REF_BANKS sy-vline 
WA_BKKITAI_STR-REF_BANKL sy-vline 
WA_BKKITAI_STR-REF_ACEXT sy-vline 
WA_BKKITAI_STR-REF_IBAN sy-vline 
WA_BKKITAI_STR-REF_NAME sy-vline 
WA_BKKITAI_STR-CRUSR sy-vline 
WA_BKKITAI_STR-CRDAT sy-vline 
WA_BKKITAI_STR-CRTIM sy-vline 
WA_BKKITAI_STR-CHUSR sy-vline 
WA_BKKITAI_STR-CHDAT sy-vline 
WA_BKKITAI_STR-CHTIM sy-vline 
WA_BKKITAI_STR-RLUSR sy-vline 
WA_BKKITAI_STR-RLDAT sy-vline 
WA_BKKITAI_STR-RLTIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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