ABAP Select data from SAP table IWLFPERSMTDCPREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWLFPERSMTDCPREL
*  INTO TABLE @DATA(IT_IWLFPERSMTDCPREL2).
*--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_IWLFPERSMTDCPREL INDEX 1 INTO DATA(WA_IWLFPERSMTDCPREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWLFPERSMTDCPREL>-MANDT = 1.
<IWLFPERSMTDCPREL>-PERSONNELSETTLEMENTDOCUMENT = 1.
<IWLFPERSMTDCPREL>-PRICINGPROCEDURESTEP = 1.
<IWLFPERSMTDCPREL>-PRICINGPROCEDURECOUNTER = 1.
<IWLFPERSMTDCPREL>-CONDITIONAPPLICATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWLFPERSMTDCPREL-CONDITIONTYPE, sy-vline,
  WA_IWLFPERSMTDCPREL-PRICECONDITIONDETERMINATIONDTE, sy-vline,
  WA_IWLFPERSMTDCPREL-CONDITIONCALCULATIONTYPE, sy-vline,
  WA_IWLFPERSMTDCPREL-CONDITIONRATEAMOUNT, sy-vline,
  WA_IWLFPERSMTDCPREL-CONDITIONRATERATIO, sy-vline,
  WA_IWLFPERSMTDCPREL-CONDITIONRATERATIOUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWLFPERSMTDCPREL 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_IWLFPERSMTDCPREL 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_IWLFPERSMTDCPREL INTO WA_IWLFPERSMTDCPREL.


*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_IWLFPERSMTDCPREL-PERSONNELSETTLEMENTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDCPREL-PERSONNELSETTLEMENTDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field CONDITIONSCALEBASISUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSMTDCPREL-CONDITIONSCALEBASISUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSMTDCPREL-CONDITIONSCALEBASISUNIT.
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_IWLFPERSMTDCPREL_STR, 
MANDT TYPE STRING,
PERSONNELSETTLEMENTDOCUMENT TYPE STRING,
PRICINGPROCEDURESTEP TYPE STRING,
PRICINGPROCEDURECOUNTER TYPE STRING,
CONDITIONAPPLICATION TYPE STRING,
CONDITIONTYPE TYPE STRING,
PRICECONDITIONDETERMINATIONDTE TYPE STRING,
CONDITIONCALCULATIONTYPE TYPE STRING,
CONDITIONRATEAMOUNT TYPE STRING,
CONDITIONRATERATIO TYPE STRING,
CONDITIONRATERATIOUNIT TYPE STRING,
CONDITIONBASEAMOUNT TYPE STRING,
CONDITIONBASEQUANTITY TYPE STRING,
CONDITIONCURRENCY TYPE STRING,
CONDITIONQUANTITY TYPE STRING,
CONDITIONQUANTITYUNIT TYPE STRING,
CONDITIONCATEGORY TYPE STRING,
CONDITIONISFORSTATISTICS TYPE STRING,
PRICINGSCALETYPE TYPE STRING,
ISRELEVANTFORACCRUAL TYPE STRING,
CNDNISRELEVANTFORINVOICELIST TYPE STRING,
CONDITIONORIGIN TYPE STRING,
ISGROUPCONDITION TYPE STRING,
CONDITIONRECORD TYPE STRING,
CONDITIONSEQUENTIALNUMBER TYPE STRING,
TAXCODE TYPE STRING,
WITHHOLDINGTAXCODE TYPE STRING,
CNDNROUNDINGOFFDIFFAMOUNT TYPE STRING,
CONDITIONAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CONDITIONCONTROL TYPE STRING,
CONDITIONINACTIVEREASON TYPE STRING,
CONDITIONCLASS TYPE STRING,
PRCGPROCEDURECOUNTERFORHEADER TYPE STRING,
FACTORFORCONDITIONBASISVALUE TYPE STRING,
STRUCTURECONDITION TYPE STRING,
PERIODFACTORFORCNDNBASISVALUE TYPE STRING,
PRICINGSCALEBASIS TYPE STRING,
CONDITIONSCALEBASEAMOUNT TYPE STRING,
CONDITIONSCALEBASEQUANTITY TYPE STRING,
CONDITIONSCALEBASISUNIT TYPE STRING,
CONDITIONSCALEBASISCURRENCY TYPE STRING,
CNDNISRELEVANTFORINTCOBILLING TYPE STRING,
CONDITIONISMANUALLYCHANGED TYPE STRING,
CONDITIONISFORCONFIGURATION TYPE STRING,
VARIANTCONDITION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWLFPERSMTDCPREL_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_IWLFPERSMTDCPREL_STR-MANDT sy-vline 
WA_IWLFPERSMTDCPREL_STR-PERSONNELSETTLEMENTDOCUMENT sy-vline 
WA_IWLFPERSMTDCPREL_STR-PRICINGPROCEDURESTEP sy-vline 
WA_IWLFPERSMTDCPREL_STR-PRICINGPROCEDURECOUNTER sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONAPPLICATION sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONTYPE sy-vline 
WA_IWLFPERSMTDCPREL_STR-PRICECONDITIONDETERMINATIONDTE sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONCALCULATIONTYPE sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONRATEAMOUNT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONRATERATIO sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONRATERATIOUNIT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONBASEAMOUNT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONBASEQUANTITY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONCURRENCY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONQUANTITY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONQUANTITYUNIT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONCATEGORY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONISFORSTATISTICS sy-vline 
WA_IWLFPERSMTDCPREL_STR-PRICINGSCALETYPE sy-vline 
WA_IWLFPERSMTDCPREL_STR-ISRELEVANTFORACCRUAL sy-vline 
WA_IWLFPERSMTDCPREL_STR-CNDNISRELEVANTFORINVOICELIST sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONORIGIN sy-vline 
WA_IWLFPERSMTDCPREL_STR-ISGROUPCONDITION sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONRECORD sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONSEQUENTIALNUMBER sy-vline 
WA_IWLFPERSMTDCPREL_STR-TAXCODE sy-vline 
WA_IWLFPERSMTDCPREL_STR-WITHHOLDINGTAXCODE sy-vline 
WA_IWLFPERSMTDCPREL_STR-CNDNROUNDINGOFFDIFFAMOUNT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONAMOUNT sy-vline 
WA_IWLFPERSMTDCPREL_STR-TRANSACTIONCURRENCY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONCONTROL sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONINACTIVEREASON sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONCLASS sy-vline 
WA_IWLFPERSMTDCPREL_STR-PRCGPROCEDURECOUNTERFORHEADER sy-vline 
WA_IWLFPERSMTDCPREL_STR-FACTORFORCONDITIONBASISVALUE sy-vline 
WA_IWLFPERSMTDCPREL_STR-STRUCTURECONDITION sy-vline 
WA_IWLFPERSMTDCPREL_STR-PERIODFACTORFORCNDNBASISVALUE sy-vline 
WA_IWLFPERSMTDCPREL_STR-PRICINGSCALEBASIS sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONSCALEBASEAMOUNT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONSCALEBASEQUANTITY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONSCALEBASISUNIT sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONSCALEBASISCURRENCY sy-vline 
WA_IWLFPERSMTDCPREL_STR-CNDNISRELEVANTFORINTCOBILLING sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONISMANUALLYCHANGED sy-vline 
WA_IWLFPERSMTDCPREL_STR-CONDITIONISFORCONFIGURATION sy-vline 
WA_IWLFPERSMTDCPREL_STR-VARIANTCONDITION sy-vline      INTO ld_text SEPARATED BY SPACE.

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