ABAP Select data from SAP table PGHOPROJFCRESTL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PGHOPROJFCRESTL
*  INTO TABLE @DATA(IT_PGHOPROJFCRESTL2).
*--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_PGHOPROJFCRESTL INDEX 1 INTO DATA(WA_PGHOPROJFCRESTL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PGHOPROJFCRESTL>-MANDT = 1.
<PGHOPROJFCRESTL>-NETWORKOBJECTID = 1.
<PGHOPROJFCRESTL>-NETWORKOBJECTNAME = 1.
<PGHOPROJFCRESTL>-PRODUCTIONNETWORKNAME = 1.
<PGHOPROJFCRESTL>-NETWORKMEDIUM = 1.

ENDLOOP.

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

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


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

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PGHOPROJFCRESTL-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOPROJFCRESTL-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_PGHOPROJFCRESTL_STR, 
MANDT TYPE STRING,
NETWORKOBJECTID TYPE STRING,
NETWORKOBJECTNAME TYPE STRING,
PRODUCTIONNETWORKNAME TYPE STRING,
NETWORKMEDIUM TYPE STRING,
FORECASTRESULTTYPE TYPE STRING,
ALLOCATIONFREQUENCYCODE TYPE STRING,
FORECASTRESULTDATE TYPE STRING,
FORECASTVALUE TYPE STRING,
UNITOFMEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PGHOPROJFCRESTL_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_PGHOPROJFCRESTL_STR-MANDT sy-vline 
WA_PGHOPROJFCRESTL_STR-NETWORKOBJECTID sy-vline 
WA_PGHOPROJFCRESTL_STR-NETWORKOBJECTNAME sy-vline 
WA_PGHOPROJFCRESTL_STR-PRODUCTIONNETWORKNAME sy-vline 
WA_PGHOPROJFCRESTL_STR-NETWORKMEDIUM sy-vline 
WA_PGHOPROJFCRESTL_STR-FORECASTRESULTTYPE sy-vline 
WA_PGHOPROJFCRESTL_STR-ALLOCATIONFREQUENCYCODE sy-vline 
WA_PGHOPROJFCRESTL_STR-FORECASTRESULTDATE sy-vline 
WA_PGHOPROJFCRESTL_STR-FORECASTVALUE sy-vline 
WA_PGHOPROJFCRESTL_STR-UNITOFMEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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