ABAP Select data from SAP table IWLFEXPNSMTITMPT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWLFEXPNSMTITMPT
*  INTO TABLE @DATA(IT_IWLFEXPNSMTITMPT2).
*--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_IWLFEXPNSMTITMPT INDEX 1 INTO DATA(WA_IWLFEXPNSMTITMPT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWLFEXPNSMTITMPT>-MANDT = 1.
<IWLFEXPNSMTITMPT>-EXPNSETTLMT = 1.
<IWLFEXPNSMTITMPT>-EXPNSETTLMTITEM = 1.
<IWLFEXPNSMTITMPT>-PARTNERFUNCTION = 1.
<IWLFEXPNSMTITMPT>-PARTNERCOUNTER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWLFEXPNSMTITMPT-CREATEDBYUSER, sy-vline,
  WA_IWLFEXPNSMTITMPT-CREATIONDATE, sy-vline,
  WA_IWLFEXPNSMTITMPT-SUPPLIER, sy-vline,
  WA_IWLFEXPNSMTITMPT-CUSTOMER, sy-vline,
  WA_IWLFEXPNSMTITMPT-CONTACTPERSON, sy-vline,
  WA_IWLFEXPNSMTITMPT-PERSONNEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWLFEXPNSMTITMPT 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_IWLFEXPNSMTITMPT 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_IWLFEXPNSMTITMPT INTO WA_IWLFEXPNSMTITMPT.


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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFEXPNSMTITMPT-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFEXPNSMTITMPT-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFEXPNSMTITMPT-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFEXPNSMTITMPT-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFEXPNSMTITMPT-ADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFEXPNSMTITMPT-ADDRESSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRESSPERSONID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFEXPNSMTITMPT-ADDRESSPERSONID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFEXPNSMTITMPT-ADDRESSPERSONID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCEBUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFEXPNSMTITMPT-REFERENCEBUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFEXPNSMTITMPT-REFERENCEBUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BPREFADDRESSIDFORDOCSPCFCADDR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFEXPNSMTITMPT-BPREFADDRESSIDFORDOCSPCFCADDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFEXPNSMTITMPT-BPREFADDRESSIDFORDOCSPCFCADDR.
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_IWLFEXPNSMTITMPT_STR, 
MANDT TYPE STRING,
EXPNSETTLMT TYPE STRING,
EXPNSETTLMTITEM TYPE STRING,
PARTNERFUNCTION TYPE STRING,
PARTNERCOUNTER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
SUPPLIER TYPE STRING,
CUSTOMER TYPE STRING,
CONTACTPERSON TYPE STRING,
PERSONNEL TYPE STRING,
ADDRESSID TYPE STRING,
ADDRESSPERSONID TYPE STRING,
REFERENCEBUSINESSPARTNER TYPE STRING,
EXPNSETTLMTPARTADDRREFTYPE TYPE STRING,
ADDRESSOBJECTTYPE TYPE STRING,
BPADDRDETERMINATIONTRANSACTION TYPE STRING,
BPREFADDRESSIDFORDOCSPCFCADDR TYPE STRING,
VATREGISTRATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWLFEXPNSMTITMPT_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_IWLFEXPNSMTITMPT_STR-MANDT sy-vline 
WA_IWLFEXPNSMTITMPT_STR-EXPNSETTLMT sy-vline 
WA_IWLFEXPNSMTITMPT_STR-EXPNSETTLMTITEM sy-vline 
WA_IWLFEXPNSMTITMPT_STR-PARTNERFUNCTION sy-vline 
WA_IWLFEXPNSMTITMPT_STR-PARTNERCOUNTER sy-vline 
WA_IWLFEXPNSMTITMPT_STR-CREATEDBYUSER sy-vline 
WA_IWLFEXPNSMTITMPT_STR-CREATIONDATE sy-vline 
WA_IWLFEXPNSMTITMPT_STR-SUPPLIER sy-vline 
WA_IWLFEXPNSMTITMPT_STR-CUSTOMER sy-vline 
WA_IWLFEXPNSMTITMPT_STR-CONTACTPERSON sy-vline 
WA_IWLFEXPNSMTITMPT_STR-PERSONNEL sy-vline 
WA_IWLFEXPNSMTITMPT_STR-ADDRESSID sy-vline 
WA_IWLFEXPNSMTITMPT_STR-ADDRESSPERSONID sy-vline 
WA_IWLFEXPNSMTITMPT_STR-REFERENCEBUSINESSPARTNER sy-vline 
WA_IWLFEXPNSMTITMPT_STR-EXPNSETTLMTPARTADDRREFTYPE sy-vline 
WA_IWLFEXPNSMTITMPT_STR-ADDRESSOBJECTTYPE sy-vline 
WA_IWLFEXPNSMTITMPT_STR-BPADDRDETERMINATIONTRANSACTION sy-vline 
WA_IWLFEXPNSMTITMPT_STR-BPREFADDRESSIDFORDOCSPCFCADDR sy-vline 
WA_IWLFEXPNSMTITMPT_STR-VATREGISTRATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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