ABAP Select data from SAP table BKK_STR_BKK42_REL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKK_STR_BKK42_REL 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 BKK_STR_BKK42_REL. 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 BKK_STR_BKK42_REL 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_BKK_STR_BKK42_REL TYPE STANDARD TABLE OF BKK_STR_BKK42_REL,
      WA_BKK_STR_BKK42_REL TYPE BKK_STR_BKK42_REL,
      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: <BKK_STR_BKK42_REL> TYPE BKK_STR_BKK42_REL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKK_STR_BKK42_REL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKK_STR_BKK42_REL
  INTO TABLE IT_BKK_STR_BKK42_REL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKK_STR_BKK42_REL
*  INTO TABLE @DATA(IT_BKK_STR_BKK42_REL2).
*--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_BKK_STR_BKK42_REL INDEX 1 INTO DATA(WA_BKK_STR_BKK42_REL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKK_STR_BKK42_REL ASSIGNING <BKK_STR_BKK42_REL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKK_STR_BKK42_REL>-BKKRS = 1.
<BKK_STR_BKK42_REL>-ACNUM_INT = 1.
<BKK_STR_BKK42_REL>-ACNUM_EXT = 1.
<BKK_STR_BKK42_REL>-BKS = 1.
<BKK_STR_BKK42_REL>-ACNUM_IBAN = 1.

ENDLOOP.

LOOP AT IT_BKK_STR_BKK42_REL INTO WA_BKK_STR_BKK42_REL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKK_STR_BKK42_REL-CONDAREA, sy-vline,
  WA_BKK_STR_BKK42_REL-PRODINT, sy-vline,
  WA_BKK_STR_BKK42_REL-VERSION, sy-vline,
  WA_BKK_STR_BKK42_REL-ACKIND, sy-vline,
  WA_BKK_STR_BKK42_REL-XCTLFLGBAL, sy-vline,
  WA_BKK_STR_BKK42_REL-SENDTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKK_STR_BKK42_REL 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_BKK_STR_BKK42_REL 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_BKK_STR_BKK42_REL INTO WA_BKK_STR_BKK42_REL.


*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 ACNUM_INT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_BKK42_REL-ACNUM_INT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_BKK42_REL-ACNUM_INT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ACEXT, internal->external for field ACNUM_EXT
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_BKK42_REL-ACNUM_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_BKK42_REL-ACNUM_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACNUM_IBAN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_BKK42_REL-ACNUM_IBAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_BKK42_REL-ACNUM_IBAN.
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_BKK_STR_BKK42_REL_STR, 
BKKRS TYPE STRING,
ACNUM_INT TYPE STRING,
ACNUM_EXT TYPE STRING,
BKS TYPE STRING,
ACNUM_IBAN TYPE STRING,
CONDAREA TYPE STRING,
PRODINT TYPE STRING,
VERSION TYPE STRING,
ACKIND TYPE STRING,
XCTLFLGBAL TYPE STRING,
SENDTYPE TYPE STRING,
CONDCHDATE TYPE STRING,
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,
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,
MIN_DEPOSIT TYPE STRING,
AIMETH TYPE STRING,
AI_POST TYPE STRING,
ESTCOND TYPE STRING,
XCIWLIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKK_STR_BKK42_REL_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_BKK_STR_BKK42_REL_STR-BKKRS sy-vline 
WA_BKK_STR_BKK42_REL_STR-ACNUM_INT sy-vline 
WA_BKK_STR_BKK42_REL_STR-ACNUM_EXT sy-vline 
WA_BKK_STR_BKK42_REL_STR-BKS sy-vline 
WA_BKK_STR_BKK42_REL_STR-ACNUM_IBAN sy-vline 
WA_BKK_STR_BKK42_REL_STR-CONDAREA sy-vline 
WA_BKK_STR_BKK42_REL_STR-PRODINT sy-vline 
WA_BKK_STR_BKK42_REL_STR-VERSION sy-vline 
WA_BKK_STR_BKK42_REL_STR-ACKIND sy-vline 
WA_BKK_STR_BKK42_REL_STR-XCTLFLGBAL sy-vline 
WA_BKK_STR_BKK42_REL_STR-SENDTYPE sy-vline 
WA_BKK_STR_BKK42_REL_STR-CONDCHDATE sy-vline 
WA_BKK_STR_BKK42_REL_STR-BEGRU sy-vline 
WA_BKK_STR_BKK42_REL_STR-GLGRP sy-vline 
WA_BKK_STR_BKK42_REL_STR-GLKEY sy-vline 
WA_BKK_STR_BKK42_REL_STR-ACTEXT sy-vline 
WA_BKK_STR_BKK42_REL_STR-WAERS sy-vline 
WA_BKK_STR_BKK42_REL_STR-CONDGR1 sy-vline 
WA_BKK_STR_BKK42_REL_STR-CONDGR2 sy-vline 
WA_BKK_STR_BKK42_REL_STR-CONDGR3 sy-vline 
WA_BKK_STR_BKK42_REL_STR-CAL_ID1 sy-vline 
WA_BKK_STR_BKK42_REL_STR-CAL_ID2 sy-vline 
WA_BKK_STR_BKK42_REL_STR-SHARE_ID sy-vline 
WA_BKK_STR_BKK42_REL_STR-XTHIRD sy-vline 
WA_BKK_STR_BKK42_REL_STR-SECUR_ID sy-vline 
WA_BKK_STR_BKK42_REL_STR-XACREF sy-vline 
WA_BKK_STR_BKK42_REL_STR-XACCLO sy-vline 
WA_BKK_STR_BKK42_REL_STR-XWHTAX sy-vline 
WA_BKK_STR_BKK42_REL_STR-XCOLAUTH sy-vline 
WA_BKK_STR_BKK42_REL_STR-XVALREQ sy-vline 
WA_BKK_STR_BKK42_REL_STR-XOPITM sy-vline 
WA_BKK_STR_BKK42_REL_STR-XBLOCKDEBIT sy-vline 
WA_BKK_STR_BKK42_REL_STR-XBLOCKCREDIT sy-vline 
WA_BKK_STR_BKK42_REL_STR-XPOST_FEE_SEP sy-vline 
WA_BKK_STR_BKK42_REL_STR-GSBER sy-vline 
WA_BKK_STR_BKK42_REL_STR-BANKL_ACCT sy-vline 
WA_BKK_STR_BKK42_REL_STR-MIN_DEPOSIT sy-vline 
WA_BKK_STR_BKK42_REL_STR-AIMETH sy-vline 
WA_BKK_STR_BKK42_REL_STR-AI_POST sy-vline 
WA_BKK_STR_BKK42_REL_STR-ESTCOND sy-vline 
WA_BKK_STR_BKK42_REL_STR-XCIWLIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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