ABAP Select data from SAP table IWLFSMTDCBKDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWLFSMTDCBKDATA
*  INTO TABLE @DATA(IT_IWLFSMTDCBKDATA2).
*--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_IWLFSMTDCBKDATA INDEX 1 INTO DATA(WA_IWLFSMTDCBKDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWLFSMTDCBKDATA>-MANDT = 1.
<IWLFSMTDCBKDATA>-SETTLMTMGMTDOC = 1.
<IWLFSMTDCBKDATA>-SETTLMTMGMTDOCACCTTYPE = 1.
<IWLFSMTDCBKDATA>-CREATIONTIME = 1.
<IWLFSMTDCBKDATA>-CREATIONDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWLFSMTDCBKDATA-CREATEDBYUSER, sy-vline,
  WA_IWLFSMTDCBKDATA-LASTCHANGEDATE, sy-vline,
  WA_IWLFSMTDCBKDATA-BANKACCOUNT, sy-vline,
  WA_IWLFSMTDCBKDATA-BANKCOUNTRY, sy-vline,
  WA_IWLFSMTDCBKDATA-BANKINTERNALID, sy-vline,
  WA_IWLFSMTDCBKDATA-BANKCONTROLKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWLFSMTDCBKDATA 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_IWLFSMTDCBKDATA 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_IWLFSMTDCBKDATA INTO WA_IWLFSMTDCBKDATA.


*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 SETTLMTMGMTDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFSMTDCBKDATA-SETTLMTMGMTDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFSMTDCBKDATA-SETTLMTMGMTDOC.
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_IWLFSMTDCBKDATA_STR, 
MANDT TYPE STRING,
SETTLMTMGMTDOC TYPE STRING,
SETTLMTMGMTDOCACCTTYPE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
BANKACCOUNT TYPE STRING,
BANKCOUNTRY TYPE STRING,
BANKINTERNALID TYPE STRING,
BANKCONTROLKEY TYPE STRING,
BANKACCOUNTREFERENCETEXT TYPE STRING,
DATAEXCHANGEINSTRUCTIONKEY TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
TAXNUMBER3 TYPE STRING,
TAXNUMBER4 TYPE STRING,
ISNATURALPERSON TYPE STRING,
VATLIABILITY TYPE STRING,
SETTLMTMGMTDOCCAT TYPE STRING,
SETTLMTPARTNERCAT TYPE STRING,
SETTLMTBUSPROCCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWLFSMTDCBKDATA_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_IWLFSMTDCBKDATA_STR-MANDT sy-vline 
WA_IWLFSMTDCBKDATA_STR-SETTLMTMGMTDOC sy-vline 
WA_IWLFSMTDCBKDATA_STR-SETTLMTMGMTDOCACCTTYPE sy-vline 
WA_IWLFSMTDCBKDATA_STR-CREATIONTIME sy-vline 
WA_IWLFSMTDCBKDATA_STR-CREATIONDATE sy-vline 
WA_IWLFSMTDCBKDATA_STR-CREATEDBYUSER sy-vline 
WA_IWLFSMTDCBKDATA_STR-LASTCHANGEDATE sy-vline 
WA_IWLFSMTDCBKDATA_STR-BANKACCOUNT sy-vline 
WA_IWLFSMTDCBKDATA_STR-BANKCOUNTRY sy-vline 
WA_IWLFSMTDCBKDATA_STR-BANKINTERNALID sy-vline 
WA_IWLFSMTDCBKDATA_STR-BANKCONTROLKEY sy-vline 
WA_IWLFSMTDCBKDATA_STR-BANKACCOUNTREFERENCETEXT sy-vline 
WA_IWLFSMTDCBKDATA_STR-DATAEXCHANGEINSTRUCTIONKEY sy-vline 
WA_IWLFSMTDCBKDATA_STR-TAXNUMBER1 sy-vline 
WA_IWLFSMTDCBKDATA_STR-TAXNUMBER2 sy-vline 
WA_IWLFSMTDCBKDATA_STR-TAXNUMBER3 sy-vline 
WA_IWLFSMTDCBKDATA_STR-TAXNUMBER4 sy-vline 
WA_IWLFSMTDCBKDATA_STR-ISNATURALPERSON sy-vline 
WA_IWLFSMTDCBKDATA_STR-VATLIABILITY sy-vline 
WA_IWLFSMTDCBKDATA_STR-SETTLMTMGMTDOCCAT sy-vline 
WA_IWLFSMTDCBKDATA_STR-SETTLMTPARTNERCAT sy-vline 
WA_IWLFSMTDCBKDATA_STR-SETTLMTBUSPROCCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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