ABAP Select data from SAP table PPROJNTWKATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPROJNTWKATTR
*  INTO TABLE @DATA(IT_PPROJNTWKATTR2).
*--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_PPROJNTWKATTR INDEX 1 INTO DATA(WA_PPROJNTWKATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPROJNTWKATTR>-MANDT = 1.
<PPROJNTWKATTR>-PROJECTNETWORK = 1.
<PPROJNTWKATTR>-PROJECTNETWORKINTERNALID = 1.
<PPROJNTWKATTR>-PROJECTNETWORKOBJECT = 1.
<PPROJNTWKATTR>-PROJECTOBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPROJNTWKATTR-OBJECTTYPE, sy-vline,
  WA_PPROJNTWKATTR-PROJECTNETWORKDESCRIPTION, sy-vline,
  WA_PPROJNTWKATTR-PLANNEDSTARTDATE, sy-vline,
  WA_PPROJNTWKATTR-PLANNEDENDDATE, sy-vline,
  WA_PPROJNTWKATTR-FORECASTEDSTARTDATE, sy-vline,
  WA_PPROJNTWKATTR-FORECASTEDENDDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPROJNTWKATTR 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_PPROJNTWKATTR 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_PPROJNTWKATTR INTO WA_PPROJNTWKATTR.


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

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPROJNTWKATTR-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPROJNTWKATTR-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_PPROJNTWKATTR_STR, 
MANDT TYPE STRING,
PROJECTNETWORK TYPE STRING,
PROJECTNETWORKINTERNALID TYPE STRING,
PROJECTNETWORKOBJECT TYPE STRING,
PROJECTOBJECT TYPE STRING,
OBJECTTYPE TYPE STRING,
PROJECTNETWORKDESCRIPTION TYPE STRING,
PLANNEDSTARTDATE TYPE STRING,
PLANNEDENDDATE TYPE STRING,
FORECASTEDSTARTDATE TYPE STRING,
FORECASTEDENDDATE TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICENDDATE TYPE STRING,
SCHEDULEDFORECASTEDSTARTDATE TYPE STRING,
SCHEDULEDFORECASTEDENDDATE TYPE STRING,
ACTUALSTARTDATE TYPE STRING,
ACTUALENDDATE TYPE STRING,
PRIORITYCODE TYPE STRING,
PLANT TYPE STRING,
COMPANYCODE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
MRPCONTROLLER TYPE STRING,
COSTCENTER TYPE STRING,
FACTORYCALENDAR TYPE STRING,
CONCATENATEDACTIVESYSTSTSNAME TYPE STRING,
CONCATENATEDACTIVEUSERSTSNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPROJNTWKATTR_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_PPROJNTWKATTR_STR-MANDT sy-vline 
WA_PPROJNTWKATTR_STR-PROJECTNETWORK sy-vline 
WA_PPROJNTWKATTR_STR-PROJECTNETWORKINTERNALID sy-vline 
WA_PPROJNTWKATTR_STR-PROJECTNETWORKOBJECT sy-vline 
WA_PPROJNTWKATTR_STR-PROJECTOBJECT sy-vline 
WA_PPROJNTWKATTR_STR-OBJECTTYPE sy-vline 
WA_PPROJNTWKATTR_STR-PROJECTNETWORKDESCRIPTION sy-vline 
WA_PPROJNTWKATTR_STR-PLANNEDSTARTDATE sy-vline 
WA_PPROJNTWKATTR_STR-PLANNEDENDDATE sy-vline 
WA_PPROJNTWKATTR_STR-FORECASTEDSTARTDATE sy-vline 
WA_PPROJNTWKATTR_STR-FORECASTEDENDDATE sy-vline 
WA_PPROJNTWKATTR_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_PPROJNTWKATTR_STR-SCHEDULEDBASICENDDATE sy-vline 
WA_PPROJNTWKATTR_STR-SCHEDULEDFORECASTEDSTARTDATE sy-vline 
WA_PPROJNTWKATTR_STR-SCHEDULEDFORECASTEDENDDATE sy-vline 
WA_PPROJNTWKATTR_STR-ACTUALSTARTDATE sy-vline 
WA_PPROJNTWKATTR_STR-ACTUALENDDATE sy-vline 
WA_PPROJNTWKATTR_STR-PRIORITYCODE sy-vline 
WA_PPROJNTWKATTR_STR-PLANT sy-vline 
WA_PPROJNTWKATTR_STR-COMPANYCODE sy-vline 
WA_PPROJNTWKATTR_STR-CREATIONDATE sy-vline 
WA_PPROJNTWKATTR_STR-CREATEDBYUSER sy-vline 
WA_PPROJNTWKATTR_STR-LASTCHANGEDATE sy-vline 
WA_PPROJNTWKATTR_STR-MRPCONTROLLER sy-vline 
WA_PPROJNTWKATTR_STR-COSTCENTER sy-vline 
WA_PPROJNTWKATTR_STR-FACTORYCALENDAR sy-vline 
WA_PPROJNTWKATTR_STR-CONCATENATEDACTIVESYSTSTSNAME sy-vline 
WA_PPROJNTWKATTR_STR-CONCATENATEDACTIVEUSERSTSNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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