ABAP Select data from SAP table PRAPREVCHGTPITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRAPREVCHGTPITEM
*  INTO TABLE @DATA(IT_PRAPREVCHGTPITEM2).
*--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_PRAPREVCHGTPITEM INDEX 1 INTO DATA(WA_PRAPREVCHGTPITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRAPREVCHGTPITEM>-MANDT = 1.
<PRAPREVCHGTPITEM>-PERFORMANCEOBLIGATION = 1.
<PRAPREVCHGTPITEM>-REVNACCTGCONTRCHANGEEFFCTVDATE = 1.
<PRAPREVCHGTPITEM>-REVENUEACCOUNTINGCONTRACT = 1.
<PRAPREVCHGTPITEM>-REVNACCTGRECONCILIATIONKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRAPREVCHGTPITEM-PERFORMANCEOBLIGATIONCLASS, sy-vline,
  WA_PRAPREVCHGTPITEM-RAPERFOBLGNCHANGETYPE, sy-vline,
  WA_PRAPREVCHGTPITEM-RAPERFOBLGNDISTINCTTYPE, sy-vline,
  WA_PRAPREVCHGTPITEM-CURRENTHIGHERLEVELPERFOBLGN, sy-vline,
  WA_PRAPREVCHGTPITEM-RAHIGHERLEVELPERFOBLGN, sy-vline,
  WA_PRAPREVCHGTPITEM-FISCALYEARPERIOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRAPREVCHGTPITEM 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_PRAPREVCHGTPITEM 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_PRAPREVCHGTPITEM INTO WA_PRAPREVCHGTPITEM.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field PERFOBLGNEFFECTIVEQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRAPREVCHGTPITEM-PERFOBLGNEFFECTIVEQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRAPREVCHGTPITEM-PERFOBLGNEFFECTIVEQUANTITYUNIT.
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_PRAPREVCHGTPITEM_STR, 
MANDT TYPE STRING,
PERFORMANCEOBLIGATION TYPE STRING,
REVNACCTGCONTRCHANGEEFFCTVDATE TYPE STRING,
REVENUEACCOUNTINGCONTRACT TYPE STRING,
REVNACCTGRECONCILIATIONKEY TYPE STRING,
PERFORMANCEOBLIGATIONCLASS TYPE STRING,
RAPERFOBLGNCHANGETYPE TYPE STRING,
RAPERFOBLGNDISTINCTTYPE TYPE STRING,
CURRENTHIGHERLEVELPERFOBLGN TYPE STRING,
RAHIGHERLEVELPERFOBLGN TYPE STRING,
FISCALYEARPERIOD TYPE STRING,
RAPERFORMANCEOBLIGATIONTYPE TYPE STRING,
SSPRICEINSALESDOCCRCY TYPE STRING,
SSPRICETOLERANCEPERCENT TYPE STRING,
SSPRICETOLERANCEAMOUNT TYPE STRING,
ALLOCATEDPRICEINSALESDOCCRCY TYPE STRING,
CONTRACTUALPRCINSLSDOCCRCY TYPE STRING,
OPLCONTRACTUALPRCINSLSDOCCRCY TYPE STRING,
PERFOBLGNFACEAMTINSLSDOCCRCY TYPE STRING,
SALESDOCUMENTCURRENCY TYPE STRING,
PERFORMANCEOBLIGATIONSTARTDATE TYPE STRING,
PERFORMANCEOBLIGATIONENDDATE TYPE STRING,
PERFOBLGNFULFILLMENTTYPE TYPE STRING,
PERFOBLIGATIONDEFERRALMETHOD TYPE STRING,
PERFOBLGNCONTRACTUALQUANTITY TYPE STRING,
PERFOBLGNCONTRACTUALQTYUNIT TYPE STRING,
PERFOBLGNEFFECTIVEQUANTITY TYPE STRING,
PERFOBLGNEFFECTIVEQUANTITYUNIT TYPE STRING,
RAPERFOBLGNISRESIDUAL TYPE STRING,
PERFOBLGNISEXCLFROMPRICEALLOC TYPE STRING,
RACONTRACTISMANUALLYALLOCATED TYPE STRING,
PERFOBLGNISFINALLYINVOICED TYPE STRING,
PERFOBLGNISSOFTDELETED TYPE STRING,
RAPERFOBLGNFINALIZATIONDATE TYPE STRING,
RABUSINESSCHANGEREASON TYPE STRING,
RACHANGETYPECHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRAPREVCHGTPITEM_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_PRAPREVCHGTPITEM_STR-MANDT sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFORMANCEOBLIGATION sy-vline 
WA_PRAPREVCHGTPITEM_STR-REVNACCTGCONTRCHANGEEFFCTVDATE sy-vline 
WA_PRAPREVCHGTPITEM_STR-REVENUEACCOUNTINGCONTRACT sy-vline 
WA_PRAPREVCHGTPITEM_STR-REVNACCTGRECONCILIATIONKEY sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFORMANCEOBLIGATIONCLASS sy-vline 
WA_PRAPREVCHGTPITEM_STR-RAPERFOBLGNCHANGETYPE sy-vline 
WA_PRAPREVCHGTPITEM_STR-RAPERFOBLGNDISTINCTTYPE sy-vline 
WA_PRAPREVCHGTPITEM_STR-CURRENTHIGHERLEVELPERFOBLGN sy-vline 
WA_PRAPREVCHGTPITEM_STR-RAHIGHERLEVELPERFOBLGN sy-vline 
WA_PRAPREVCHGTPITEM_STR-FISCALYEARPERIOD sy-vline 
WA_PRAPREVCHGTPITEM_STR-RAPERFORMANCEOBLIGATIONTYPE sy-vline 
WA_PRAPREVCHGTPITEM_STR-SSPRICEINSALESDOCCRCY sy-vline 
WA_PRAPREVCHGTPITEM_STR-SSPRICETOLERANCEPERCENT sy-vline 
WA_PRAPREVCHGTPITEM_STR-SSPRICETOLERANCEAMOUNT sy-vline 
WA_PRAPREVCHGTPITEM_STR-ALLOCATEDPRICEINSALESDOCCRCY sy-vline 
WA_PRAPREVCHGTPITEM_STR-CONTRACTUALPRCINSLSDOCCRCY sy-vline 
WA_PRAPREVCHGTPITEM_STR-OPLCONTRACTUALPRCINSLSDOCCRCY sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNFACEAMTINSLSDOCCRCY sy-vline 
WA_PRAPREVCHGTPITEM_STR-SALESDOCUMENTCURRENCY sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFORMANCEOBLIGATIONSTARTDATE sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFORMANCEOBLIGATIONENDDATE sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNFULFILLMENTTYPE sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLIGATIONDEFERRALMETHOD sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNCONTRACTUALQUANTITY sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNCONTRACTUALQTYUNIT sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNEFFECTIVEQUANTITY sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNEFFECTIVEQUANTITYUNIT sy-vline 
WA_PRAPREVCHGTPITEM_STR-RAPERFOBLGNISRESIDUAL sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNISEXCLFROMPRICEALLOC sy-vline 
WA_PRAPREVCHGTPITEM_STR-RACONTRACTISMANUALLYALLOCATED sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNISFINALLYINVOICED sy-vline 
WA_PRAPREVCHGTPITEM_STR-PERFOBLGNISSOFTDELETED sy-vline 
WA_PRAPREVCHGTPITEM_STR-RAPERFOBLGNFINALIZATIONDATE sy-vline 
WA_PRAPREVCHGTPITEM_STR-RABUSINESSCHANGEREASON sy-vline 
WA_PRAPREVCHGTPITEM_STR-RACHANGETYPECHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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