ABAP Select data from SAP table CPERSWKAGRMTPROJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPERSWKAGRMTPROJ
*  INTO TABLE @DATA(IT_CPERSWKAGRMTPROJ2).
*--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_CPERSWKAGRMTPROJ INDEX 1 INTO DATA(WA_CPERSWKAGRMTPROJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPERSWKAGRMTPROJ>-MANDT = 1.
<CPERSWKAGRMTPROJ>-PERSON = 1.
<CPERSWKAGRMTPROJ>-PERSONWORKAGREEMENT = 1.
<CPERSWKAGRMTPROJ>-CUSTOMERPROJECT = 1.
<CPERSWKAGRMTPROJ>-ROLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPERSWKAGRMTPROJ-PROJECTNAME, sy-vline,
  WA_CPERSWKAGRMTPROJ-CUSTOMERPROJECTRESOURCE, sy-vline,
  WA_CPERSWKAGRMTPROJ-COSTCTRACTIVITYTYPENAME, sy-vline,
  WA_CPERSWKAGRMTPROJ-MANAGEREMPLOYEE, sy-vline,
  WA_CPERSWKAGRMTPROJ-MANAGER, sy-vline,
  WA_CPERSWKAGRMTPROJ-CUSTOMERPROJECTMANAGERNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPERSWKAGRMTPROJ 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_CPERSWKAGRMTPROJ 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_CPERSWKAGRMTPROJ INTO WA_CPERSWKAGRMTPROJ.


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

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

*Conversion exit ALPHA, internal->external for field ADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPERSWKAGRMTPROJ-ADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPERSWKAGRMTPROJ-ADDRESSID.
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_CPERSWKAGRMTPROJ_STR, 
MANDT TYPE STRING,
PERSON TYPE STRING,
PERSONWORKAGREEMENT TYPE STRING,
CUSTOMERPROJECT TYPE STRING,
ROLE TYPE STRING,
PROJECTNAME TYPE STRING,
CUSTOMERPROJECTRESOURCE TYPE STRING,
COSTCTRACTIVITYTYPENAME TYPE STRING,
MANAGEREMPLOYEE TYPE STRING,
MANAGER TYPE STRING,
CUSTOMERPROJECTMANAGERNAME TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMERNUM TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
CUSTOMERNAME TYPE STRING,
ENGAGEMENTPROJECTTYPE TYPE STRING,
ENGAGEMENTPROJECTSERVICEORG TYPE STRING,
ENGAGEMENTPROJECTCATEGORY TYPE STRING,
CUSTOMERPROJECTTYPE TYPE STRING,
CUSTOMERPROJECTSERVICEORG TYPE STRING,
ADDRESSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPERSWKAGRMTPROJ_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_CPERSWKAGRMTPROJ_STR-MANDT sy-vline 
WA_CPERSWKAGRMTPROJ_STR-PERSON sy-vline 
WA_CPERSWKAGRMTPROJ_STR-PERSONWORKAGREEMENT sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERPROJECT sy-vline 
WA_CPERSWKAGRMTPROJ_STR-ROLE sy-vline 
WA_CPERSWKAGRMTPROJ_STR-PROJECTNAME sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERPROJECTRESOURCE sy-vline 
WA_CPERSWKAGRMTPROJ_STR-COSTCTRACTIVITYTYPENAME sy-vline 
WA_CPERSWKAGRMTPROJ_STR-MANAGEREMPLOYEE sy-vline 
WA_CPERSWKAGRMTPROJ_STR-MANAGER sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERPROJECTMANAGERNAME sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMER sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERNUM sy-vline 
WA_CPERSWKAGRMTPROJ_STR-AUTHORIZATIONGROUP sy-vline 
WA_CPERSWKAGRMTPROJ_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERNAME sy-vline 
WA_CPERSWKAGRMTPROJ_STR-ENGAGEMENTPROJECTTYPE sy-vline 
WA_CPERSWKAGRMTPROJ_STR-ENGAGEMENTPROJECTSERVICEORG sy-vline 
WA_CPERSWKAGRMTPROJ_STR-ENGAGEMENTPROJECTCATEGORY sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERPROJECTTYPE sy-vline 
WA_CPERSWKAGRMTPROJ_STR-CUSTOMERPROJECTSERVICEORG sy-vline 
WA_CPERSWKAGRMTPROJ_STR-ADDRESSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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