ABAP Select data from SAP table BKK600 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKK600 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 BKK600. 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 BKK600 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_BKK600 TYPE STANDARD TABLE OF BKK600,
      WA_BKK600 TYPE BKK600,
      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: <BKK600> TYPE BKK600.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKK600.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKK600
  INTO TABLE IT_BKK600.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKK600
*  INTO TABLE @DATA(IT_BKK6002).
*--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_BKK600 INDEX 1 INTO DATA(WA_BKK6002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKK600 ASSIGNING <BKK600>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKK600>-CLIENT = 1.
<BKK600>-TREENR = 1.
<BKK600>-DATE_FROM = 1.
<BKK600>-BKKRS2 = 1.
<BKK600>-ACCOUNT2 = 1.

ENDLOOP.

LOOP AT IT_BKK600 INTO WA_BKK600.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKK600-BKKRS1, sy-vline,
  WA_BKK600-ACCOUNT1, sy-vline,
  WA_BKK600-RELEASE_STATUS, sy-vline,
  WA_BKK600-REL_ID, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_BKK600 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_BKK600 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_BKK600 INTO WA_BKK600.


*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 TREENR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK600-TREENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK600-TREENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit INVDT, internal->external for field DATE_FROM
CALL FUNCTION 'CONVERSION_EXIT_INVDT_OUTPUT'
  EXPORTING
    input =                      WA_BKK600-DATE_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK600-DATE_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK600-ACCOUNT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK600-ACCOUNT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK600-ACCOUNT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK600-ACCOUNT1.
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_BKK600_STR, 
CLIENT TYPE STRING,
TREENR TYPE STRING,
DATE_FROM TYPE STRING,
BKKRS2 TYPE STRING,
ACCOUNT2 TYPE STRING,
BKKRS1 TYPE STRING,
ACCOUNT1 TYPE STRING,
RELEASE_STATUS TYPE STRING,
REL_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKK600_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_BKK600_STR-CLIENT sy-vline 
WA_BKK600_STR-TREENR sy-vline 
WA_BKK600_STR-DATE_FROM sy-vline 
WA_BKK600_STR-BKKRS2 sy-vline 
WA_BKK600_STR-ACCOUNT2 sy-vline 
WA_BKK600_STR-BKKRS1 sy-vline 
WA_BKK600_STR-ACCOUNT1 sy-vline 
WA_BKK600_STR-RELEASE_STATUS sy-vline 
WA_BKK600_STR-REL_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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