ABAP Select data from SAP table IWLFPERSMTDOCITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWLFPERSMTDOCITM
*  INTO TABLE @DATA(IT_IWLFPERSMTDOCITM2).
*--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_IWLFPERSMTDOCITM INDEX 1 INTO DATA(WA_IWLFPERSMTDOCITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWLFPERSMTDOCITM>-MANDT = 1.
<IWLFPERSMTDOCITM>-PERSONNELSETTLEMENTDOCUMENT = 1.
<IWLFPERSMTDOCITM>-PERSSETTLMTDOCITEM = 1.
<IWLFPERSMTDOCITM>-PERSSETTLMTDOCCURRENCY = 1.
<IWLFPERSMTDOCITM>-PRICINGDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWLFPERSMTDOCITM-PRODUCT, sy-vline,
  WA_IWLFPERSMTDOCITM-PRODUCTGROUP, sy-vline,
  WA_IWLFPERSMTDOCITM-PLANT, sy-vline,
  WA_IWLFPERSMTDOCITM-PRICINGDATE, sy-vline,
  WA_IWLFPERSMTDOCITM-SETTLMTQUANTITY, sy-vline,
  WA_IWLFPERSMTDOCITM-SETTLMTQUANTITYUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWLFPERSMTDOCITM 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_IWLFPERSMTDOCITM 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_IWLFPERSMTDOCITM INTO WA_IWLFPERSMTDOCITM.


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

*Conversion exit MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SETTLMTQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-SETTLMTQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-SETTLMTQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field NETPRICEQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-NETPRICEQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-NETPRICEQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ITEMWEIGHTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-ITEMWEIGHTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-ITEMWEIGHTUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ITEMVOLUMEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-ITEMVOLUMEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-ITEMVOLUMEUNIT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field SETTLEMENTFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDOCITM-SETTLEMENTFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDOCITM-SETTLEMENTFISCALYEAR.
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_IWLFPERSMTDOCITM_STR, 
MANDT TYPE STRING,
PERSONNELSETTLEMENTDOCUMENT TYPE STRING,
PERSSETTLMTDOCITEM TYPE STRING,
PERSSETTLMTDOCCURRENCY TYPE STRING,
PRICINGDOCUMENT TYPE STRING,
PRODUCT TYPE STRING,
PRODUCTGROUP TYPE STRING,
PLANT TYPE STRING,
PRICINGDATE TYPE STRING,
SETTLMTQUANTITY TYPE STRING,
SETTLMTQUANTITYUNIT TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
NETPRICEQUANTITYUNIT TYPE STRING,
SETTLMTTOBASEQUANTITYNMRTR TYPE STRING,
SETTLMTTOBASEQUANTITYDNMNTR TYPE STRING,
SETTLMTTONETPRICEQTYNMRTR TYPE STRING,
SETTLMTTONETPRICEQTYDNMNTR TYPE STRING,
BASEUNIT TYPE STRING,
ITEMNETWEIGHT TYPE STRING,
ITEMGROSSWEIGHT TYPE STRING,
ITEMWEIGHTUNIT TYPE STRING,
ITEMVOLUME TYPE STRING,
ITEMVOLUMEUNIT TYPE STRING,
ITEMNETAMOUNT TYPE STRING,
SUBTOTAL1AMOUNT TYPE STRING,
SUBTOTAL2AMOUNT TYPE STRING,
SUBTOTAL3AMOUNT TYPE STRING,
SUBTOTAL4AMOUNT TYPE STRING,
SUBTOTAL5AMOUNT TYPE STRING,
SUBTOTAL6AMOUNT TYPE STRING,
REBATEBASISAMOUNT TYPE STRING,
SETTLMTITMSTATISTICALPRPTY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
SETTLMTITEMACTIVITYREASON TYPE STRING,
PERSSETTLMTDOCITEMTEXT TYPE STRING,
BUSINESSAREA TYPE STRING,
CONTROLLINGAREA TYPE STRING,
COSTCENTER TYPE STRING,
PROFITCENTER TYPE STRING,
PRCDETNISINCMPLT TYPE STRING,
PERSSETTLMTDOCITEMCAT TYPE STRING,
SETTLMTITEMRELTDCNDNCONTR TYPE STRING,
PERSSETTLMTDOCITEMSTATUS TYPE STRING,
PERSSETTLMTDOCITEMRVSD TYPE STRING,
SETTLEMENTORDER TYPE STRING,
SERVICESRENDEREDDATE TYPE STRING,
COMPANYCODE TYPE STRING,
GLACCOUNT TYPE STRING,
SETTLEMENTFISCALYEAR TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
PRODUCTHIERARCHY TYPE STRING,
SALESSPCFCPRODUCTGROUP1 TYPE STRING,
SALESSPCFCPRODUCTGROUP2 TYPE STRING,
SALESSPCFCPRODUCTGROUP3 TYPE STRING,
SALESSPCFCPRODUCTGROUP4 TYPE STRING,
SALESSPCFCPRODUCTGROUP5 TYPE STRING,
BUSTRANSDOCREFERENCEID TYPE STRING,
BUSTRANSDOCREFERENCEITEMID TYPE STRING,
PERSSETTLMTDOCITEMCHANGESTATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWLFPERSMTDOCITM_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_IWLFPERSMTDOCITM_STR-MANDT sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSONNELSETTLEMENTDOCUMENT sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCITEM sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCCURRENCY sy-vline 
WA_IWLFPERSMTDOCITM_STR-PRICINGDOCUMENT sy-vline 
WA_IWLFPERSMTDOCITM_STR-PRODUCT sy-vline 
WA_IWLFPERSMTDOCITM_STR-PRODUCTGROUP sy-vline 
WA_IWLFPERSMTDOCITM_STR-PLANT sy-vline 
WA_IWLFPERSMTDOCITM_STR-PRICINGDATE sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTQUANTITY sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTQUANTITYUNIT sy-vline 
WA_IWLFPERSMTDOCITM_STR-NETPRICEAMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-NETPRICEQUANTITY sy-vline 
WA_IWLFPERSMTDOCITM_STR-NETPRICEQUANTITYUNIT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTTOBASEQUANTITYNMRTR sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTTOBASEQUANTITYDNMNTR sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTTONETPRICEQTYNMRTR sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTTONETPRICEQTYDNMNTR sy-vline 
WA_IWLFPERSMTDOCITM_STR-BASEUNIT sy-vline 
WA_IWLFPERSMTDOCITM_STR-ITEMNETWEIGHT sy-vline 
WA_IWLFPERSMTDOCITM_STR-ITEMGROSSWEIGHT sy-vline 
WA_IWLFPERSMTDOCITM_STR-ITEMWEIGHTUNIT sy-vline 
WA_IWLFPERSMTDOCITM_STR-ITEMVOLUME sy-vline 
WA_IWLFPERSMTDOCITM_STR-ITEMVOLUMEUNIT sy-vline 
WA_IWLFPERSMTDOCITM_STR-ITEMNETAMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SUBTOTAL1AMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SUBTOTAL2AMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SUBTOTAL3AMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SUBTOTAL4AMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SUBTOTAL5AMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SUBTOTAL6AMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-REBATEBASISAMOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTITMSTATISTICALPRPTY sy-vline 
WA_IWLFPERSMTDOCITM_STR-CREATEDBYUSER sy-vline 
WA_IWLFPERSMTDOCITM_STR-CREATIONDATE sy-vline 
WA_IWLFPERSMTDOCITM_STR-CREATIONTIME sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTITEMACTIVITYREASON sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCITEMTEXT sy-vline 
WA_IWLFPERSMTDOCITM_STR-BUSINESSAREA sy-vline 
WA_IWLFPERSMTDOCITM_STR-CONTROLLINGAREA sy-vline 
WA_IWLFPERSMTDOCITM_STR-COSTCENTER sy-vline 
WA_IWLFPERSMTDOCITM_STR-PROFITCENTER sy-vline 
WA_IWLFPERSMTDOCITM_STR-PRCDETNISINCMPLT sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCITEMCAT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLMTITEMRELTDCNDNCONTR sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCITEMSTATUS sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCITEMRVSD sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLEMENTORDER sy-vline 
WA_IWLFPERSMTDOCITM_STR-SERVICESRENDEREDDATE sy-vline 
WA_IWLFPERSMTDOCITM_STR-COMPANYCODE sy-vline 
WA_IWLFPERSMTDOCITM_STR-GLACCOUNT sy-vline 
WA_IWLFPERSMTDOCITM_STR-SETTLEMENTFISCALYEAR sy-vline 
WA_IWLFPERSMTDOCITM_STR-WBSELEMENTINTERNALID sy-vline 
WA_IWLFPERSMTDOCITM_STR-PRODUCTHIERARCHY sy-vline 
WA_IWLFPERSMTDOCITM_STR-SALESSPCFCPRODUCTGROUP1 sy-vline 
WA_IWLFPERSMTDOCITM_STR-SALESSPCFCPRODUCTGROUP2 sy-vline 
WA_IWLFPERSMTDOCITM_STR-SALESSPCFCPRODUCTGROUP3 sy-vline 
WA_IWLFPERSMTDOCITM_STR-SALESSPCFCPRODUCTGROUP4 sy-vline 
WA_IWLFPERSMTDOCITM_STR-SALESSPCFCPRODUCTGROUP5 sy-vline 
WA_IWLFPERSMTDOCITM_STR-BUSTRANSDOCREFERENCEID sy-vline 
WA_IWLFPERSMTDOCITM_STR-BUSTRANSDOCREFERENCEITEMID sy-vline 
WA_IWLFPERSMTDOCITM_STR-PERSSETTLMTDOCITEMCHANGESTATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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