ABAP Select data from SAP table CENGPROJSTAFFRES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CENGPROJSTAFFRES
*  INTO TABLE @DATA(IT_CENGPROJSTAFFRES2).
*--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_CENGPROJSTAFFRES INDEX 1 INTO DATA(WA_CENGPROJSTAFFRES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CENGPROJSTAFFRES>-MANDT = 1.
<CENGPROJSTAFFRES>-RESOURCEDEMANDUUID = 1.
<CENGPROJSTAFFRES>-EMPLOYMENTINTERNALID = 1.
<CENGPROJSTAFFRES>-RESOURCEDEMAND = 1.
<CENGPROJSTAFFRES>-RESOURCESUPPLY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CENGPROJSTAFFRES-ENGAGEMENTPROJECT, sy-vline,
  WA_CENGPROJSTAFFRES-WORKPACKAGE, sy-vline,
  WA_CENGPROJSTAFFRES-ENGAGEMENTPROJECTRESOURCE, sy-vline,
  WA_CENGPROJSTAFFRES-ENGMNTPROJECTDELIVERYORG, sy-vline,
  WA_CENGPROJSTAFFRES-ENGAGEMENTPROJECTRESOURCETYPE, sy-vline,
  WA_CENGPROJSTAFFRES-WORKITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CENGPROJSTAFFRES 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_CENGPROJSTAFFRES 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_CENGPROJSTAFFRES INTO WA_CENGPROJSTAFFRES.


*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 UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CENGPROJSTAFFRES-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENGPROJSTAFFRES-UNITOFMEASURE.
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_CENGPROJSTAFFRES_STR, 
MANDT TYPE STRING,
RESOURCEDEMANDUUID TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
RESOURCEDEMAND TYPE STRING,
RESOURCESUPPLY TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
WORKPACKAGE TYPE STRING,
ENGAGEMENTPROJECTRESOURCE TYPE STRING,
ENGMNTPROJECTDELIVERYORG TYPE STRING,
ENGAGEMENTPROJECTRESOURCETYPE TYPE STRING,
WORKITEM TYPE STRING,
PERSONEXTERNALID TYPE STRING,
CURRENCY TYPE STRING,
UNITOFMEASURE TYPE STRING,
ENGMNTPROJSTAFFEDEFFORT TYPE STRING,
ENGMNTPROJSTAFFEDCOST TYPE STRING,
PROJASSIGNMENTLASTCHANGEDBY TYPE STRING,
RESOURCEMANAGER TYPE STRING,
STAFFEDRESOURCESTARTDATE TYPE STRING,
STAFFEDRESOURCEENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CENGPROJSTAFFRES_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_CENGPROJSTAFFRES_STR-MANDT sy-vline 
WA_CENGPROJSTAFFRES_STR-RESOURCEDEMANDUUID sy-vline 
WA_CENGPROJSTAFFRES_STR-EMPLOYMENTINTERNALID sy-vline 
WA_CENGPROJSTAFFRES_STR-RESOURCEDEMAND sy-vline 
WA_CENGPROJSTAFFRES_STR-RESOURCESUPPLY sy-vline 
WA_CENGPROJSTAFFRES_STR-ENGAGEMENTPROJECT sy-vline 
WA_CENGPROJSTAFFRES_STR-WORKPACKAGE sy-vline 
WA_CENGPROJSTAFFRES_STR-ENGAGEMENTPROJECTRESOURCE sy-vline 
WA_CENGPROJSTAFFRES_STR-ENGMNTPROJECTDELIVERYORG sy-vline 
WA_CENGPROJSTAFFRES_STR-ENGAGEMENTPROJECTRESOURCETYPE sy-vline 
WA_CENGPROJSTAFFRES_STR-WORKITEM sy-vline 
WA_CENGPROJSTAFFRES_STR-PERSONEXTERNALID sy-vline 
WA_CENGPROJSTAFFRES_STR-CURRENCY sy-vline 
WA_CENGPROJSTAFFRES_STR-UNITOFMEASURE sy-vline 
WA_CENGPROJSTAFFRES_STR-ENGMNTPROJSTAFFEDEFFORT sy-vline 
WA_CENGPROJSTAFFRES_STR-ENGMNTPROJSTAFFEDCOST sy-vline 
WA_CENGPROJSTAFFRES_STR-PROJASSIGNMENTLASTCHANGEDBY sy-vline 
WA_CENGPROJSTAFFRES_STR-RESOURCEMANAGER sy-vline 
WA_CENGPROJSTAFFRES_STR-STAFFEDRESOURCESTARTDATE sy-vline 
WA_CENGPROJSTAFFRES_STR-STAFFEDRESOURCEENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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