ABAP Select data from SAP table IBKK81_DI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IBKK81_DI 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 IBKK81_DI. 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 IBKK81_DI 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_IBKK81_DI TYPE STANDARD TABLE OF IBKK81_DI,
      WA_IBKK81_DI TYPE IBKK81_DI,
      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: <IBKK81_DI> TYPE IBKK81_DI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IBKK81_DI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IBKK81_DI
  INTO TABLE IT_IBKK81_DI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IBKK81_DI
*  INTO TABLE @DATA(IT_IBKK81_DI2).
*--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_IBKK81_DI INDEX 1 INTO DATA(WA_IBKK81_DI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IBKK81_DI ASSIGNING <IBKK81_DI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IBKK81_DI>-CONDCATG = 1.
<IBKK81_DI>-CONDDIF = 1.
<IBKK81_DI>-CONDDIF_V1 = 1.
<IBKK81_DI>-CONDDIF_2 = 1.
<IBKK81_DI>-CONDDIF_V2 = 1.

ENDLOOP.

LOOP AT IT_IBKK81_DI INTO WA_IBKK81_DI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IBKK81_DI-CURR, sy-vline,
  WA_IBKK81_DI-INTMET, sy-vline,
  WA_IBKK81_DI-STGMETH, sy-vline,
  WA_IBKK81_DI-STGBASIS, sy-vline,
  WA_IBKK81_DI-CALCTYP, sy-vline,
  WA_IBKK81_DI-FLGFROMTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IBKK81_DI 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_IBKK81_DI 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_IBKK81_DI INTO WA_IBKK81_DI.


*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_IBKK81_DI_STR, 
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,END OF T_EKKO_STR.
DATA: WA_IBKK81_DI_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_IBKK81_DI_STR-CONDCATG sy-vline 
WA_IBKK81_DI_STR-CONDDIF sy-vline 
WA_IBKK81_DI_STR-CONDDIF_V1 sy-vline 
WA_IBKK81_DI_STR-CONDDIF_2 sy-vline 
WA_IBKK81_DI_STR-CONDDIF_V2 sy-vline 
WA_IBKK81_DI_STR-CURR sy-vline 
WA_IBKK81_DI_STR-INTMET sy-vline 
WA_IBKK81_DI_STR-STGMETH sy-vline 
WA_IBKK81_DI_STR-STGBASIS sy-vline 
WA_IBKK81_DI_STR-CALCTYP sy-vline 
WA_IBKK81_DI_STR-FLGFROMTO sy-vline 
WA_IBKK81_DI_STR-FLGADDDEBI sy-vline 
WA_IBKK81_DI_STR-CONDTIME sy-vline 
WA_IBKK81_DI_STR-CONDTIME_U sy-vline 
WA_IBKK81_DI_STR-TIMEPROPCALC sy-vline 
WA_IBKK81_DI_STR-FREECOUNT sy-vline 
WA_IBKK81_DI_STR-EXEMPTLIM sy-vline 
WA_IBKK81_DI_STR-FLGLOCKED sy-vline 
WA_IBKK81_DI_STR-SORTF sy-vline 
WA_IBKK81_DI_STR-USEDTILL sy-vline 
WA_IBKK81_DI_STR-XSURCHARGE sy-vline 
WA_IBKK81_DI_STR-SROUND sy-vline 
WA_IBKK81_DI_STR-PRUNIT sy-vline 
WA_IBKK81_DI_STR-ADINTMET sy-vline 
WA_IBKK81_DI_STR-XZEROLIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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