ABAP Select data from SAP table BKKI6 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKKI6 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 BKKI6. 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 BKKI6 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_BKKI6 TYPE STANDARD TABLE OF BKKI6,
      WA_BKKI6 TYPE BKKI6,
      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: <BKKI6> TYPE BKKI6.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKKI6.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKKI6
  INTO TABLE IT_BKKI6.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKKI6
*  INTO TABLE @DATA(IT_BKKI62).
*--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_BKKI6 INDEX 1 INTO DATA(WA_BKKI62).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKKI6 ASSIGNING <BKKI6>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKKI6>-MANDT = 1.
<BKKI6>-DATE_SYPO = 1.
<BKKI6>-BKKRS = 1.
<BKKI6>-SYST_TO = 1.
<BKKI6>-APPL_TO = 1.

ENDLOOP.

LOOP AT IT_BKKI6 INTO WA_BKKI6.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKKI6-SYST_FROM, sy-vline,
  WA_BKKI6-APPL_FROM, sy-vline,
  WA_BKKI6-RCN_NO_FROM, sy-vline,
  WA_BKKI6-WAERS, sy-vline,
  WA_BKKI6-ITEMTYPE, sy-vline,
  WA_BKKI6-XCRED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKKI6 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_BKKI6 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_BKKI6 INTO WA_BKKI6.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BKKI6_STR, 
MANDT TYPE STRING,
DATE_SYPO TYPE STRING,
BKKRS TYPE STRING,
SYST_TO TYPE STRING,
APPL_TO TYPE STRING,
SYST_FROM TYPE STRING,
APPL_FROM TYPE STRING,
RCN_NO_FROM TYPE STRING,
WAERS TYPE STRING,
ITEMTYPE TYPE STRING,
XCRED TYPE STRING,
PSTSUM TYPE STRING,
PSTCNT TYPE STRING,
ENQPSTSUM TYPE STRING,
ENQPSTCNT TYPE STRING,
ENQRELSUM TYPE STRING,
ENQRELCNT TYPE STRING,
ENQPRESUM TYPE STRING,
ENQPRECNT TYPE STRING,
PREPSTSUM TYPE STRING,
PREPSTCNT TYPE STRING,
PREREJSUM TYPE STRING,
PREREJCNT TYPE STRING,
PRERELSUM TYPE STRING,
PRERELCNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKKI6_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_BKKI6_STR-MANDT sy-vline 
WA_BKKI6_STR-DATE_SYPO sy-vline 
WA_BKKI6_STR-BKKRS sy-vline 
WA_BKKI6_STR-SYST_TO sy-vline 
WA_BKKI6_STR-APPL_TO sy-vline 
WA_BKKI6_STR-SYST_FROM sy-vline 
WA_BKKI6_STR-APPL_FROM sy-vline 
WA_BKKI6_STR-RCN_NO_FROM sy-vline 
WA_BKKI6_STR-WAERS sy-vline 
WA_BKKI6_STR-ITEMTYPE sy-vline 
WA_BKKI6_STR-XCRED sy-vline 
WA_BKKI6_STR-PSTSUM sy-vline 
WA_BKKI6_STR-PSTCNT sy-vline 
WA_BKKI6_STR-ENQPSTSUM sy-vline 
WA_BKKI6_STR-ENQPSTCNT sy-vline 
WA_BKKI6_STR-ENQRELSUM sy-vline 
WA_BKKI6_STR-ENQRELCNT sy-vline 
WA_BKKI6_STR-ENQPRESUM sy-vline 
WA_BKKI6_STR-ENQPRECNT sy-vline 
WA_BKKI6_STR-PREPSTSUM sy-vline 
WA_BKKI6_STR-PREPSTCNT sy-vline 
WA_BKKI6_STR-PREREJSUM sy-vline 
WA_BKKI6_STR-PREREJCNT sy-vline 
WA_BKKI6_STR-PRERELSUM sy-vline 
WA_BKKI6_STR-PRERELCNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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