ABAP Select data from SAP table CREEXASSIGNPROJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CREEXASSIGNPROJ
*  INTO TABLE @DATA(IT_CREEXASSIGNPROJ2).
*--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_CREEXASSIGNPROJ INDEX 1 INTO DATA(WA_CREEXASSIGNPROJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CREEXASSIGNPROJ>-MANDT = 1.
<CREEXASSIGNPROJ>-PROJECT = 1.
<CREEXASSIGNPROJ>-PROJECTINTERNALID = 1.
<CREEXASSIGNPROJ>-PROJECTDESCRIPTION = 1.
<CREEXASSIGNPROJ>-PROJECTOBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CREEXASSIGNPROJ-RESPONSIBLEPERSON, sy-vline,
  WA_CREEXASSIGNPROJ-RESPONSIBLEPERSONNAME, sy-vline,
  WA_CREEXASSIGNPROJ-COMPANYCODE, sy-vline,
  WA_CREEXASSIGNPROJ-BUSINESSAREA, sy-vline,
  WA_CREEXASSIGNPROJ-CONTROLLINGAREA, sy-vline,
  WA_CREEXASSIGNPROJ-PROFITCENTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CREEXASSIGNPROJ 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_CREEXASSIGNPROJ 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_CREEXASSIGNPROJ INTO WA_CREEXASSIGNPROJ.


*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 ABPSN, internal->external for field PROJECT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CREEXASSIGNPROJ-PROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CREEXASSIGNPROJ-PROJECT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CREEXASSIGNPROJ-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CREEXASSIGNPROJ-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CREEXASSIGNPROJ-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CREEXASSIGNPROJ-COSTCENTER.
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_CREEXASSIGNPROJ_STR, 
MANDT TYPE STRING,
PROJECT TYPE STRING,
PROJECTINTERNALID TYPE STRING,
PROJECTDESCRIPTION TYPE STRING,
PROJECTOBJECT TYPE STRING,
RESPONSIBLEPERSON TYPE STRING,
RESPONSIBLEPERSONNAME TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSAREA TYPE STRING,
CONTROLLINGAREA TYPE STRING,
PROFITCENTER TYPE STRING,
CURRENCY TYPE STRING,
PLANNEDSTARTDATE TYPE STRING,
PLANNEDENDDATE TYPE STRING,
PLANT TYPE STRING,
LANGUAGE TYPE STRING,
COSTCENTER TYPE STRING,
COSTOBJECT TYPE STRING,
BASICDATESLASTSCHEDULEDDATE TYPE STRING,
FCSTDDATESLASTSCHEDULEDDATE TYPE STRING,
FUNCTIONALAREA TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
FORECASTEDSTARTDATE TYPE STRING,
FORECASTEDENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CREEXASSIGNPROJ_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_CREEXASSIGNPROJ_STR-MANDT sy-vline 
WA_CREEXASSIGNPROJ_STR-PROJECT sy-vline 
WA_CREEXASSIGNPROJ_STR-PROJECTINTERNALID sy-vline 
WA_CREEXASSIGNPROJ_STR-PROJECTDESCRIPTION sy-vline 
WA_CREEXASSIGNPROJ_STR-PROJECTOBJECT sy-vline 
WA_CREEXASSIGNPROJ_STR-RESPONSIBLEPERSON sy-vline 
WA_CREEXASSIGNPROJ_STR-RESPONSIBLEPERSONNAME sy-vline 
WA_CREEXASSIGNPROJ_STR-COMPANYCODE sy-vline 
WA_CREEXASSIGNPROJ_STR-BUSINESSAREA sy-vline 
WA_CREEXASSIGNPROJ_STR-CONTROLLINGAREA sy-vline 
WA_CREEXASSIGNPROJ_STR-PROFITCENTER sy-vline 
WA_CREEXASSIGNPROJ_STR-CURRENCY sy-vline 
WA_CREEXASSIGNPROJ_STR-PLANNEDSTARTDATE sy-vline 
WA_CREEXASSIGNPROJ_STR-PLANNEDENDDATE sy-vline 
WA_CREEXASSIGNPROJ_STR-PLANT sy-vline 
WA_CREEXASSIGNPROJ_STR-LANGUAGE sy-vline 
WA_CREEXASSIGNPROJ_STR-COSTCENTER sy-vline 
WA_CREEXASSIGNPROJ_STR-COSTOBJECT sy-vline 
WA_CREEXASSIGNPROJ_STR-BASICDATESLASTSCHEDULEDDATE sy-vline 
WA_CREEXASSIGNPROJ_STR-FCSTDDATESLASTSCHEDULEDDATE sy-vline 
WA_CREEXASSIGNPROJ_STR-FUNCTIONALAREA sy-vline 
WA_CREEXASSIGNPROJ_STR-SALESORGANIZATION sy-vline 
WA_CREEXASSIGNPROJ_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_CREEXASSIGNPROJ_STR-DIVISION sy-vline 
WA_CREEXASSIGNPROJ_STR-FORECASTEDSTARTDATE sy-vline 
WA_CREEXASSIGNPROJ_STR-FORECASTEDENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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