ABAP Select data from SAP table PGHOFCRSNWDATETL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PGHOFCRSNWDATETL
*  INTO TABLE @DATA(IT_PGHOFCRSNWDATETL2).
*--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_PGHOFCRSNWDATETL INDEX 1 INTO DATA(WA_PGHOFCRSNWDATETL2).


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

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

ENDLOOP.

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

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


*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_PGHOFCRSNWDATETL-NETWORKOBJECTNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOFCRSNWDATETL-NETWORKOBJECTNAME.
WRITE:/ 'New Value:', ld_input.

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

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

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