ABAP Select data from SAP table IWBSELEMPRJCMPA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWBSELEMPRJCMPA
*  INTO TABLE @DATA(IT_IWBSELEMPRJCMPA2).
*--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_IWBSELEMPRJCMPA INDEX 1 INTO DATA(WA_IWBSELEMPRJCMPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWBSELEMPRJCMPA>-MANDT = 1.
<IWBSELEMPRJCMPA>-MASTERPROJECT = 1.
<IWBSELEMPRJCMPA>-MASTERPROJECTUUID = 1.
<IWBSELEMPRJCMPA>-MASTERPROJECTISCONFIDENTIAL = 1.
<IWBSELEMPRJCMPA>-MASTERPROJECTORGANIZATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWBSELEMPRJCMPA-MASTERPROJECTTYPE, sy-vline,
  WA_IWBSELEMPRJCMPA-WBSELEMENTOBJECT, sy-vline,
  WA_IWBSELEMPRJCMPA-WBSELEMENT, sy-vline,
  WA_IWBSELEMPRJCMPA-WBSDESCRIPTION, sy-vline,
  WA_IWBSELEMPRJCMPA-WBSELEMENTHIERARCHYLEVEL, sy-vline,
  WA_IWBSELEMPRJCMPA-BASICSTARTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWBSELEMPRJCMPA 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_IWBSELEMPRJCMPA 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_IWBSELEMPRJCMPA INTO WA_IWBSELEMPRJCMPA.


*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 WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_IWBSELEMPRJCMPA-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWBSELEMPRJCMPA-WBSELEMENT.
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_IWBSELEMPRJCMPA_STR, 
MANDT TYPE STRING,
MASTERPROJECT TYPE STRING,
MASTERPROJECTUUID TYPE STRING,
MASTERPROJECTISCONFIDENTIAL TYPE STRING,
MASTERPROJECTORGANIZATION TYPE STRING,
MASTERPROJECTTYPE TYPE STRING,
WBSELEMENTOBJECT TYPE STRING,
WBSELEMENT TYPE STRING,
WBSDESCRIPTION TYPE STRING,
WBSELEMENTHIERARCHYLEVEL TYPE STRING,
BASICSTARTDATE TYPE STRING,
BASICENDDATE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWBSELEMPRJCMPA_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_IWBSELEMPRJCMPA_STR-MANDT sy-vline 
WA_IWBSELEMPRJCMPA_STR-MASTERPROJECT sy-vline 
WA_IWBSELEMPRJCMPA_STR-MASTERPROJECTUUID sy-vline 
WA_IWBSELEMPRJCMPA_STR-MASTERPROJECTISCONFIDENTIAL sy-vline 
WA_IWBSELEMPRJCMPA_STR-MASTERPROJECTORGANIZATION sy-vline 
WA_IWBSELEMPRJCMPA_STR-MASTERPROJECTTYPE sy-vline 
WA_IWBSELEMPRJCMPA_STR-WBSELEMENTOBJECT sy-vline 
WA_IWBSELEMPRJCMPA_STR-WBSELEMENT sy-vline 
WA_IWBSELEMPRJCMPA_STR-WBSDESCRIPTION sy-vline 
WA_IWBSELEMPRJCMPA_STR-WBSELEMENTHIERARCHYLEVEL sy-vline 
WA_IWBSELEMPRJCMPA_STR-BASICSTARTDATE sy-vline 
WA_IWBSELEMPRJCMPA_STR-BASICENDDATE sy-vline 
WA_IWBSELEMPRJCMPA_STR-CREATIONDATE sy-vline 
WA_IWBSELEMPRJCMPA_STR-CREATEDBYUSER sy-vline 
WA_IWBSELEMPRJCMPA_STR-LASTCHANGEDBYUSER sy-vline 
WA_IWBSELEMPRJCMPA_STR-LASTCHANGEDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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