ABAP Select data from SAP table CWORKPACKAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWORKPACKAGE
*  INTO TABLE @DATA(IT_CWORKPACKAGE2).
*--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_CWORKPACKAGE INDEX 1 INTO DATA(WA_CWORKPACKAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWORKPACKAGE>-MANDT = 1.
<CWORKPACKAGE>-WORKPACKAGE = 1.
<CWORKPACKAGE>-WORKPACKAGEUUID = 1.
<CWORKPACKAGE>-ENGAGEMENTPROJFINPLANUUID = 1.
<CWORKPACKAGE>-WORKPACKAGENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWORKPACKAGE-WORKPACKAGESTARTDATE, sy-vline,
  WA_CWORKPACKAGE-WORKPACKAGEENDDATE, sy-vline,
  WA_CWORKPACKAGE-WORKPACKAGEWBSOBJECTNUMBER, sy-vline,
  WA_CWORKPACKAGE-WBSDESCRIPTION, sy-vline,
  WA_CWORKPACKAGE-SALESORDER, sy-vline,
  WA_CWORKPACKAGE-SALESORDERITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWORKPACKAGE 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_CWORKPACKAGE 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_CWORKPACKAGE INTO WA_CWORKPACKAGE.


*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 SALESORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CWORKPACKAGE-SALESORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWORKPACKAGE-SALESORDER.
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_CWORKPACKAGE_STR, 
MANDT TYPE STRING,
WORKPACKAGE TYPE STRING,
WORKPACKAGEUUID TYPE STRING,
ENGAGEMENTPROJFINPLANUUID TYPE STRING,
WORKPACKAGENAME TYPE STRING,
WORKPACKAGESTARTDATE TYPE STRING,
WORKPACKAGEENDDATE TYPE STRING,
WORKPACKAGEWBSOBJECTNUMBER TYPE STRING,
WBSDESCRIPTION TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
WORKPACKAGETYPE TYPE STRING,
CURRENCY TYPE STRING,
PLNDCOSTAMT TYPE STRING,
PLNDEFFORTQTY TYPE STRING,
PLNDREVNAMT TYPE STRING,
PLANNEDUNITREVENUE TYPE STRING,
WORKPACKAGEUNIT TYPE STRING,
WORKPACKAGEUNITQUANTITY TYPE STRING,
WORKPACKAGEUNITUOM TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
NUMBEROFWORKITEMS TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWORKPACKAGE_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_CWORKPACKAGE_STR-MANDT sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGE sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGEUUID sy-vline 
WA_CWORKPACKAGE_STR-ENGAGEMENTPROJFINPLANUUID sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGENAME sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGESTARTDATE sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGEENDDATE sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGEWBSOBJECTNUMBER sy-vline 
WA_CWORKPACKAGE_STR-WBSDESCRIPTION sy-vline 
WA_CWORKPACKAGE_STR-SALESORDER sy-vline 
WA_CWORKPACKAGE_STR-SALESORDERITEM sy-vline 
WA_CWORKPACKAGE_STR-LASTCHANGEDBYUSER sy-vline 
WA_CWORKPACKAGE_STR-LASTCHANGEDATETIME sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGETYPE sy-vline 
WA_CWORKPACKAGE_STR-CURRENCY sy-vline 
WA_CWORKPACKAGE_STR-PLNDCOSTAMT sy-vline 
WA_CWORKPACKAGE_STR-PLNDEFFORTQTY sy-vline 
WA_CWORKPACKAGE_STR-PLNDREVNAMT sy-vline 
WA_CWORKPACKAGE_STR-PLANNEDUNITREVENUE sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGEUNIT sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGEUNITQUANTITY sy-vline 
WA_CWORKPACKAGE_STR-WORKPACKAGEUNITUOM sy-vline 
WA_CWORKPACKAGE_STR-CREATIONDATETIME sy-vline 
WA_CWORKPACKAGE_STR-CREATEDBYUSER sy-vline 
WA_CWORKPACKAGE_STR-NUMBEROFWORKITEMS sy-vline 
WA_CWORKPACKAGE_STR-ENGAGEMENTPROJECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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