ABAP Select data from SAP table CWPPLNACTLDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWPPLNACTLDATA
*  INTO TABLE @DATA(IT_CWPPLNACTLDATA2).
*--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_CWPPLNACTLDATA INDEX 1 INTO DATA(WA_CWPPLNACTLDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWPPLNACTLDATA>-MANDT = 1.
<CWPPLNACTLDATA>-CUSTOMERPROJECTUUID = 1.
<CWPPLNACTLDATA>-CUSTOMERPROJECT = 1.
<CWPPLNACTLDATA>-CUSTPROJWORKPACKAGEUUID = 1.
<CWPPLNACTLDATA>-CUSTOMERPROJECTWORKPACKAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWPPLNACTLDATA-CUSTPROJWORKPACKAGENAME, sy-vline,
  WA_CWPPLNACTLDATA-CUSTPROJWORKPACKAGESTARTDATE, sy-vline,
  WA_CWPPLNACTLDATA-CUSTPROJWORKPACKAGEENDDATE, sy-vline,
  WA_CWPPLNACTLDATA-CURRENCY, sy-vline,
  WA_CWPPLNACTLDATA-WORKPACKAGETYPE, sy-vline,
  WA_CWPPLNACTLDATA-WORKPACKAGEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWPPLNACTLDATA 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_CWPPLNACTLDATA 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_CWPPLNACTLDATA INTO WA_CWPPLNACTLDATA.


*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 CUNIT, internal->external for field WORKPACKAGEUNITUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWPPLNACTLDATA-WORKPACKAGEUNITUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWPPLNACTLDATA-WORKPACKAGEUNITUOM.
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_CWPPLNACTLDATA_STR, 
MANDT TYPE STRING,
CUSTOMERPROJECTUUID TYPE STRING,
CUSTOMERPROJECT TYPE STRING,
CUSTPROJWORKPACKAGEUUID TYPE STRING,
CUSTOMERPROJECTWORKPACKAGE TYPE STRING,
CUSTPROJWORKPACKAGENAME TYPE STRING,
CUSTPROJWORKPACKAGESTARTDATE TYPE STRING,
CUSTPROJWORKPACKAGEENDDATE TYPE STRING,
CURRENCY TYPE STRING,
WORKPACKAGETYPE TYPE STRING,
WORKPACKAGEUNIT TYPE STRING,
PLANUNITQUANTITY TYPE STRING,
ACTUALUNITQTY TYPE STRING,
REMAININGUNITQTY TYPE STRING,
WORKPACKAGEUNITUOM TYPE STRING,
CUSTPROJWRKPCKGPLANEFFORTQTY TYPE STRING,
CUSTPROJWRKPCKGACTLEFFORTQTY TYPE STRING,
CUSTPROJWRKPCKGPLANCOST TYPE STRING,
ACTUALCOST TYPE STRING,
UNITOFMEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWPPLNACTLDATA_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_CWPPLNACTLDATA_STR-MANDT sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTOMERPROJECTUUID sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTOMERPROJECT sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWORKPACKAGEUUID sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTOMERPROJECTWORKPACKAGE sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWORKPACKAGENAME sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWORKPACKAGESTARTDATE sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWORKPACKAGEENDDATE sy-vline 
WA_CWPPLNACTLDATA_STR-CURRENCY sy-vline 
WA_CWPPLNACTLDATA_STR-WORKPACKAGETYPE sy-vline 
WA_CWPPLNACTLDATA_STR-WORKPACKAGEUNIT sy-vline 
WA_CWPPLNACTLDATA_STR-PLANUNITQUANTITY sy-vline 
WA_CWPPLNACTLDATA_STR-ACTUALUNITQTY sy-vline 
WA_CWPPLNACTLDATA_STR-REMAININGUNITQTY sy-vline 
WA_CWPPLNACTLDATA_STR-WORKPACKAGEUNITUOM sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWRKPCKGPLANEFFORTQTY sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWRKPCKGACTLEFFORTQTY sy-vline 
WA_CWPPLNACTLDATA_STR-CUSTPROJWRKPCKGPLANCOST sy-vline 
WA_CWPPLNACTLDATA_STR-ACTUALCOST sy-vline 
WA_CWPPLNACTLDATA_STR-UNITOFMEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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