ABAP Select data from SAP table IBKK42_S3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IBKK42_S3 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 IBKK42_S3. 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 IBKK42_S3 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_IBKK42_S3 TYPE STANDARD TABLE OF IBKK42_S3,
      WA_IBKK42_S3 TYPE IBKK42_S3,
      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: <IBKK42_S3> TYPE IBKK42_S3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IBKK42_S3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IBKK42_S3
  INTO TABLE IT_IBKK42_S3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IBKK42_S3
*  INTO TABLE @DATA(IT_IBKK42_S32).
*--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_IBKK42_S3 INDEX 1 INTO DATA(WA_IBKK42_S32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IBKK42_S3 ASSIGNING <IBKK42_S3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IBKK42_S3>-BEGRU = 1.
<IBKK42_S3>-GLGRP = 1.
<IBKK42_S3>-GLKEY = 1.
<IBKK42_S3>-ACTEXT = 1.
<IBKK42_S3>-WAERS = 1.

ENDLOOP.

LOOP AT IT_IBKK42_S3 INTO WA_IBKK42_S3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IBKK42_S3-CONDGR1, sy-vline,
  WA_IBKK42_S3-CONDGR2, sy-vline,
  WA_IBKK42_S3-CONDGR3, sy-vline,
  WA_IBKK42_S3-CAL_ID1, sy-vline,
  WA_IBKK42_S3-CAL_ID2, sy-vline,
  WA_IBKK42_S3-SHARE_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IBKK42_S3 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_IBKK42_S3 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_IBKK42_S3 INTO WA_IBKK42_S3.


*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_IBKK42_S3_STR, 
BEGRU TYPE STRING,
GLGRP TYPE STRING,
GLKEY TYPE STRING,
ACTEXT TYPE STRING,
WAERS TYPE STRING,
CONDGR1 TYPE STRING,
CONDGR2 TYPE STRING,
CONDGR3 TYPE STRING,
CAL_ID1 TYPE STRING,
CAL_ID2 TYPE STRING,
SHARE_ID TYPE STRING,
XTHIRD TYPE STRING,
SECUR_ID TYPE STRING,
CONDIND1 TYPE STRING,
CONDIND2 TYPE STRING,
CONDIND3 TYPE STRING,
CONDIND4 TYPE STRING,
XACREF TYPE STRING,
XACCLO TYPE STRING,
XWHTAX TYPE STRING,
XCOLAUTH TYPE STRING,
XVALREQ TYPE STRING,
XOPITM TYPE STRING,
XBLOCKDEBIT TYPE STRING,
XBLOCKCREDIT TYPE STRING,
XPOST_FEE_SEP TYPE STRING,
GSBER TYPE STRING,
BANKL_ACCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IBKK42_S3_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_IBKK42_S3_STR-BEGRU sy-vline 
WA_IBKK42_S3_STR-GLGRP sy-vline 
WA_IBKK42_S3_STR-GLKEY sy-vline 
WA_IBKK42_S3_STR-ACTEXT sy-vline 
WA_IBKK42_S3_STR-WAERS sy-vline 
WA_IBKK42_S3_STR-CONDGR1 sy-vline 
WA_IBKK42_S3_STR-CONDGR2 sy-vline 
WA_IBKK42_S3_STR-CONDGR3 sy-vline 
WA_IBKK42_S3_STR-CAL_ID1 sy-vline 
WA_IBKK42_S3_STR-CAL_ID2 sy-vline 
WA_IBKK42_S3_STR-SHARE_ID sy-vline 
WA_IBKK42_S3_STR-XTHIRD sy-vline 
WA_IBKK42_S3_STR-SECUR_ID sy-vline 
WA_IBKK42_S3_STR-CONDIND1 sy-vline 
WA_IBKK42_S3_STR-CONDIND2 sy-vline 
WA_IBKK42_S3_STR-CONDIND3 sy-vline 
WA_IBKK42_S3_STR-CONDIND4 sy-vline 
WA_IBKK42_S3_STR-XACREF sy-vline 
WA_IBKK42_S3_STR-XACCLO sy-vline 
WA_IBKK42_S3_STR-XWHTAX sy-vline 
WA_IBKK42_S3_STR-XCOLAUTH sy-vline 
WA_IBKK42_S3_STR-XVALREQ sy-vline 
WA_IBKK42_S3_STR-XOPITM sy-vline 
WA_IBKK42_S3_STR-XBLOCKDEBIT sy-vline 
WA_IBKK42_S3_STR-XBLOCKCREDIT sy-vline 
WA_IBKK42_S3_STR-XPOST_FEE_SEP sy-vline 
WA_IBKK42_S3_STR-GSBER sy-vline 
WA_IBKK42_S3_STR-BANKL_ACCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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