ABAP Select data from SAP table PRD_PLNT_FCSTPAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRD_PLNT_FCSTPAR
*  INTO TABLE @DATA(IT_PRD_PLNT_FCSTPAR2).
*--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_PRD_PLNT_FCSTPAR INDEX 1 INTO DATA(WA_PRD_PLNT_FCSTPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRD_PLNT_FCSTPAR>-MANDT = 1.
<PRD_PLNT_FCSTPAR>-DRAFTUUID = 1.
<PRD_PLNT_FCSTPAR>-PARENTDRAFTUUID = 1.
<PRD_PLNT_FCSTPAR>-ROOTDRAFTUUID = 1.
<PRD_PLNT_FCSTPAR>-PRODUCT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRD_PLNT_FCSTPAR-PLANT, sy-vline,
  WA_PRD_PLNT_FCSTPAR-PLANTFOREDIT, sy-vline,
  WA_PRD_PLNT_FCSTPAR-PRODPLNTFCSTPARAMETERSPOINTER, sy-vline,
  WA_PRD_PLNT_FCSTPAR-PRODPLNTFCSTBSCVALALPHAFACTOR, sy-vline,
  WA_PRD_PLNT_FCSTPAR-PRODPLNTNUMBEROFFORECASTPERIOD, sy-vline,
  WA_PRD_PLNT_FCSTPAR-PRODPLNTFCSTTRENDVALBETAFACTOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRD_PLNT_FCSTPAR 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_PRD_PLNT_FCSTPAR 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_PRD_PLNT_FCSTPAR INTO WA_PRD_PLNT_FCSTPAR.


*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 MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PRD_PLNT_FCSTPAR-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_PLNT_FCSTPAR-PRODUCT.
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_PRD_PLNT_FCSTPAR_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
PARENTDRAFTUUID TYPE STRING,
ROOTDRAFTUUID TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
PLANTFOREDIT TYPE STRING,
PRODPLNTFCSTPARAMETERSPOINTER TYPE STRING,
PRODPLNTFCSTBSCVALALPHAFACTOR TYPE STRING,
PRODPLNTNUMBEROFFORECASTPERIOD TYPE STRING,
PRODPLNTFCSTTRENDVALBETAFACTOR TYPE STRING,
PRODPLNTMEANABSLTDVTNDELTAFCTR TYPE STRING,
PRODPLNTFCSTNMBROFFIXEDPERIOD TYPE STRING,
PRODPLNTFCSTSEASNLIDXGAMMAFCTR TYPE STRING,
PRODPLNTFCSTWEIGHTINGGROUP TYPE STRING,
FCSTMODELINITIALIZATIONMETHOD TYPE STRING,
PRODPLNTFCSTPARAMISOPTIMIZED TYPE STRING,
PRODPLNTFCSTMODSELPROCEDURE TYPE STRING,
PRODPLNTFCSTMODSELMETHOD TYPE STRING,
OPTIMIZATIONLEVEL TYPE STRING,
HISTLPERIODCOUNTFORFORECAST TYPE STRING,
PERDSCNTFORFCSTINITIALIZATION TYPE STRING,
FCSTPERDCNTPERSEASNCYC TYPE STRING,
DATEOFLASTFORECAST TYPE STRING,
FORECASTMODEL TYPE STRING,
FORECASTVALUETRACKINGLIMIT TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRD_PLNT_FCSTPAR_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_PRD_PLNT_FCSTPAR_STR-MANDT sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DRAFTUUID sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PARENTDRAFTUUID sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-ROOTDRAFTUUID sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODUCT sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PLANT sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PLANTFOREDIT sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTPARAMETERSPOINTER sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTBSCVALALPHAFACTOR sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTNUMBEROFFORECASTPERIOD sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTTRENDVALBETAFACTOR sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTMEANABSLTDVTNDELTAFCTR sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTNMBROFFIXEDPERIOD sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTSEASNLIDXGAMMAFCTR sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTWEIGHTINGGROUP sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-FCSTMODELINITIALIZATIONMETHOD sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTPARAMISOPTIMIZED sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTMODSELPROCEDURE sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PRODPLNTFCSTMODSELMETHOD sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-OPTIMIZATIONLEVEL sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-HISTLPERIODCOUNTFORFORECAST sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-PERDSCNTFORFCSTINITIALIZATION sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-FCSTPERDCNTPERSEASNCYC sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DATEOFLASTFORECAST sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-FORECASTMODEL sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-FORECASTVALUETRACKINGLIMIT sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-HASACTIVEENTITY sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PRD_PLNT_FCSTPAR_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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