ABAP Select data from SAP table PGHOFCRSNWNAMETL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PGHOFCRSNWNAMETL
*  INTO TABLE @DATA(IT_PGHOFCRSNWNAMETL2).
*--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_PGHOFCRSNWNAMETL INDEX 1 INTO DATA(WA_PGHOFCRSNWNAMETL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PGHOFCRSNWNAMETL>-MANDT = 1.
<PGHOFCRSNWNAMETL>-NETWORKOBJECTID = 1.
<PGHOFCRSNWNAMETL>-NETWORKOBJECTNAME = 1.
<PGHOFCRSNWNAMETL>-PRODUCTIONNETWORKID = 1.
<PGHOFCRSNWNAMETL>-NETWORKNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PGHOFCRSNWNAMETL-NETWORKDESCRIPTION, sy-vline,
  WA_PGHOFCRSNWNAMETL-NETWORKMEDIUM, sy-vline,
  WA_PGHOFCRSNWNAMETL-FORECASTRESULTTYPE, sy-vline,
  WA_PGHOFCRSNWNAMETL-FORECASTRESULTDATE, sy-vline,
  WA_PGHOFCRSNWNAMETL-FORECASTVALUE, sy-vline,
  WA_PGHOFCRSNWNAMETL-UNITOFMEASURE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PGHOFCRSNWNAMETL 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_PGHOFCRSNWNAMETL 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_PGHOFCRSNWNAMETL INTO WA_PGHOFCRSNWNAMETL.


*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 GHONO, internal->external for field NETWORKOBJECTNAME
CALL FUNCTION 'CONVERSION_EXIT_GHONO_OUTPUT'
  EXPORTING
    input =                      WA_PGHOFCRSNWNAMETL-NETWORKOBJECTNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOFCRSNWNAMETL-NETWORKOBJECTNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GHOFC, internal->external for field NETWORKNAME
CALL FUNCTION 'CONVERSION_EXIT_GHOFC_OUTPUT'
  EXPORTING
    input =                      WA_PGHOFCRSNWNAMETL-NETWORKNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOFCRSNWNAMETL-NETWORKNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PGHOFCRSNWNAMETL-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOFCRSNWNAMETL-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_PGHOFCRSNWNAMETL_STR, 
MANDT TYPE STRING,
NETWORKOBJECTID TYPE STRING,
NETWORKOBJECTNAME TYPE STRING,
PRODUCTIONNETWORKID TYPE STRING,
NETWORKNAME TYPE STRING,
NETWORKDESCRIPTION TYPE STRING,
NETWORKMEDIUM TYPE STRING,
FORECASTRESULTTYPE TYPE STRING,
FORECASTRESULTDATE TYPE STRING,
FORECASTVALUE TYPE STRING,
UNITOFMEASURE TYPE STRING,
ALLOCATIONFREQUENCYCODE TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARMONTH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PGHOFCRSNWNAMETL_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_PGHOFCRSNWNAMETL_STR-MANDT sy-vline 
WA_PGHOFCRSNWNAMETL_STR-NETWORKOBJECTID sy-vline 
WA_PGHOFCRSNWNAMETL_STR-NETWORKOBJECTNAME sy-vline 
WA_PGHOFCRSNWNAMETL_STR-PRODUCTIONNETWORKID sy-vline 
WA_PGHOFCRSNWNAMETL_STR-NETWORKNAME sy-vline 
WA_PGHOFCRSNWNAMETL_STR-NETWORKDESCRIPTION sy-vline 
WA_PGHOFCRSNWNAMETL_STR-NETWORKMEDIUM sy-vline 
WA_PGHOFCRSNWNAMETL_STR-FORECASTRESULTTYPE sy-vline 
WA_PGHOFCRSNWNAMETL_STR-FORECASTRESULTDATE sy-vline 
WA_PGHOFCRSNWNAMETL_STR-FORECASTVALUE sy-vline 
WA_PGHOFCRSNWNAMETL_STR-UNITOFMEASURE sy-vline 
WA_PGHOFCRSNWNAMETL_STR-ALLOCATIONFREQUENCYCODE sy-vline 
WA_PGHOFCRSNWNAMETL_STR-CALENDARYEAR sy-vline 
WA_PGHOFCRSNWNAMETL_STR-CALENDARMONTH sy-vline      INTO ld_text SEPARATED BY SPACE.

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