ABAP Select data from SAP table CWRITOFFPRJDET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWRITOFFPRJDET
*  INTO TABLE @DATA(IT_CWRITOFFPRJDET2).
*--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_CWRITOFFPRJDET INDEX 1 INTO DATA(WA_CWRITOFFPRJDET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWRITOFFPRJDET>-MANDT = 1.
<CWRITOFFPRJDET>-PROJBILLGELMNTENTRITMUUID = 1.
<CWRITOFFPRJDET>-PROJECTBILLINGREQUESTUUID = 1.
<CWRITOFFPRJDET>-PROJECTBILLINGREQUESTSTATUS = 1.
<CWRITOFFPRJDET>-MATERIALGROUPNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWRITOFFPRJDET-MATERIALNAME, sy-vline,
  WA_CWRITOFFPRJDET-OPENAMOUNTINTRANSCRCY, sy-vline,
  WA_CWRITOFFPRJDET-WBSELEMENT, sy-vline,
  WA_CWRITOFFPRJDET-ACCOUNTINGDOCUMENT, sy-vline,
  WA_CWRITOFFPRJDET-LEDGERGLLINEITEM, sy-vline,
  WA_CWRITOFFPRJDET-FISCALYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWRITOFFPRJDET 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_CWRITOFFPRJDET 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_CWRITOFFPRJDET INTO WA_CWRITOFFPRJDET.


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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CWRITOFFPRJDET-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWRITOFFPRJDET-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWRITOFFPRJDET-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWRITOFFPRJDET-QUANTITYUNIT.
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_CWRITOFFPRJDET_STR, 
MANDT TYPE STRING,
PROJBILLGELMNTENTRITMUUID TYPE STRING,
PROJECTBILLINGREQUESTUUID TYPE STRING,
PROJECTBILLINGREQUESTSTATUS TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
MATERIALNAME TYPE STRING,
OPENAMOUNTINTRANSCRCY TYPE STRING,
WBSELEMENT TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
LEDGERGLLINEITEM TYPE STRING,
FISCALYEAR TYPE STRING,
PERSONFULLNAME TYPE STRING,
SERVICESRENDEREDDATE TYPE STRING,
WRITTENOFFQUANTITY TYPE STRING,
WRITTENOFFAMTINTRANSACCRCY TYPE STRING,
WRITTENOFFREVENUEAMTINDOCCRCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
QUANTITYUNIT TYPE STRING,
BUSINESSPARTNERUUID TYPE STRING,
BILLINGCONTROLCATEGORY TYPE STRING,
BILLINGCONTROLCATEGORYTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWRITOFFPRJDET_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_CWRITOFFPRJDET_STR-MANDT sy-vline 
WA_CWRITOFFPRJDET_STR-PROJBILLGELMNTENTRITMUUID sy-vline 
WA_CWRITOFFPRJDET_STR-PROJECTBILLINGREQUESTUUID sy-vline 
WA_CWRITOFFPRJDET_STR-PROJECTBILLINGREQUESTSTATUS sy-vline 
WA_CWRITOFFPRJDET_STR-MATERIALGROUPNAME sy-vline 
WA_CWRITOFFPRJDET_STR-MATERIALNAME sy-vline 
WA_CWRITOFFPRJDET_STR-OPENAMOUNTINTRANSCRCY sy-vline 
WA_CWRITOFFPRJDET_STR-WBSELEMENT sy-vline 
WA_CWRITOFFPRJDET_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_CWRITOFFPRJDET_STR-LEDGERGLLINEITEM sy-vline 
WA_CWRITOFFPRJDET_STR-FISCALYEAR sy-vline 
WA_CWRITOFFPRJDET_STR-PERSONFULLNAME sy-vline 
WA_CWRITOFFPRJDET_STR-SERVICESRENDEREDDATE sy-vline 
WA_CWRITOFFPRJDET_STR-WRITTENOFFQUANTITY sy-vline 
WA_CWRITOFFPRJDET_STR-WRITTENOFFAMTINTRANSACCRCY sy-vline 
WA_CWRITOFFPRJDET_STR-WRITTENOFFREVENUEAMTINDOCCRCY sy-vline 
WA_CWRITOFFPRJDET_STR-TRANSACTIONCURRENCY sy-vline 
WA_CWRITOFFPRJDET_STR-QUANTITYUNIT sy-vline 
WA_CWRITOFFPRJDET_STR-BUSINESSPARTNERUUID sy-vline 
WA_CWRITOFFPRJDET_STR-BILLINGCONTROLCATEGORY sy-vline 
WA_CWRITOFFPRJDET_STR-BILLINGCONTROLCATEGORYTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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