ABAP Select data from SAP table BKK81 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKK81 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 BKK81. 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 BKK81 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_BKK81 TYPE STANDARD TABLE OF BKK81,
      WA_BKK81 TYPE BKK81,
      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: <BKK81> TYPE BKK81.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKK81.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKK81
  INTO TABLE IT_BKK81.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKK81
*  INTO TABLE @DATA(IT_BKK812).
*--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_BKK81 INDEX 1 INTO DATA(WA_BKK812).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKK81 ASSIGNING <BKK81>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKK81>-MANDT = 1.
<BKK81>-CONDAREA = 1.
<BKK81>-COND = 1.
<BKK81>-VALIDFROM = 1.
<BKK81>-CONDCATG = 1.

ENDLOOP.

LOOP AT IT_BKK81 INTO WA_BKK81.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKK81-CONDDIF, sy-vline,
  WA_BKK81-CONDDIF_V1, sy-vline,
  WA_BKK81-CONDDIF_2, sy-vline,
  WA_BKK81-CONDDIF_V2, sy-vline,
  WA_BKK81-CURR, sy-vline,
  WA_BKK81-INTMET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKK81 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_BKK81 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_BKK81 INTO WA_BKK81.


*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 INVDT, internal->external for field VALIDFROM
CALL FUNCTION 'CONVERSION_EXIT_INVDT_OUTPUT'
  EXPORTING
    input =                      WA_BKK81-VALIDFROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK81-VALIDFROM.
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_BKK81_STR, 
MANDT TYPE STRING,
CONDAREA TYPE STRING,
COND TYPE STRING,
VALIDFROM TYPE STRING,
CONDCATG TYPE STRING,
CONDDIF TYPE STRING,
CONDDIF_V1 TYPE STRING,
CONDDIF_2 TYPE STRING,
CONDDIF_V2 TYPE STRING,
CURR TYPE STRING,
INTMET TYPE STRING,
STGMETH TYPE STRING,
STGBASIS TYPE STRING,
CALCTYP TYPE STRING,
FLGFROMTO TYPE STRING,
FLGADDDEBI TYPE STRING,
CONDTIME TYPE STRING,
CONDTIME_U TYPE STRING,
TIMEPROPCALC TYPE STRING,
FREECOUNT TYPE STRING,
EXEMPTLIM TYPE STRING,
FLGLOCKED TYPE STRING,
SORTF TYPE STRING,
USEDTILL TYPE STRING,
XSURCHARGE TYPE STRING,
SROUND TYPE STRING,
PRUNIT TYPE STRING,
ADINTMET TYPE STRING,
XZEROLIM TYPE STRING,
CRUSER TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CHGUSER TYPE STRING,
CHGDATE TYPE STRING,
CHGTIME TYPE STRING,
RELUSER TYPE STRING,
RELDATE TYPE STRING,
RELTIME TYPE STRING,
X_DUEDATE TYPE STRING,
X_VD_DUEDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKK81_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_BKK81_STR-MANDT sy-vline 
WA_BKK81_STR-CONDAREA sy-vline 
WA_BKK81_STR-COND sy-vline 
WA_BKK81_STR-VALIDFROM sy-vline 
WA_BKK81_STR-CONDCATG sy-vline 
WA_BKK81_STR-CONDDIF sy-vline 
WA_BKK81_STR-CONDDIF_V1 sy-vline 
WA_BKK81_STR-CONDDIF_2 sy-vline 
WA_BKK81_STR-CONDDIF_V2 sy-vline 
WA_BKK81_STR-CURR sy-vline 
WA_BKK81_STR-INTMET sy-vline 
WA_BKK81_STR-STGMETH sy-vline 
WA_BKK81_STR-STGBASIS sy-vline 
WA_BKK81_STR-CALCTYP sy-vline 
WA_BKK81_STR-FLGFROMTO sy-vline 
WA_BKK81_STR-FLGADDDEBI sy-vline 
WA_BKK81_STR-CONDTIME sy-vline 
WA_BKK81_STR-CONDTIME_U sy-vline 
WA_BKK81_STR-TIMEPROPCALC sy-vline 
WA_BKK81_STR-FREECOUNT sy-vline 
WA_BKK81_STR-EXEMPTLIM sy-vline 
WA_BKK81_STR-FLGLOCKED sy-vline 
WA_BKK81_STR-SORTF sy-vline 
WA_BKK81_STR-USEDTILL sy-vline 
WA_BKK81_STR-XSURCHARGE sy-vline 
WA_BKK81_STR-SROUND sy-vline 
WA_BKK81_STR-PRUNIT sy-vline 
WA_BKK81_STR-ADINTMET sy-vline 
WA_BKK81_STR-XZEROLIM sy-vline 
WA_BKK81_STR-CRUSER sy-vline 
WA_BKK81_STR-CRDATE sy-vline 
WA_BKK81_STR-CRTIME sy-vline 
WA_BKK81_STR-CHGUSER sy-vline 
WA_BKK81_STR-CHGDATE sy-vline 
WA_BKK81_STR-CHGTIME sy-vline 
WA_BKK81_STR-RELUSER sy-vline 
WA_BKK81_STR-RELDATE sy-vline 
WA_BKK81_STR-RELTIME sy-vline 
WA_BKK81_STR-X_DUEDATE sy-vline 
WA_BKK81_STR-X_VD_DUEDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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