ABAP Select data from SAP table PPPFCSTDMND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPPFCSTDMND
*  INTO TABLE @DATA(IT_PPPFCSTDMND2).
*--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_PPPFCSTDMND INDEX 1 INTO DATA(WA_PPPFCSTDMND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPPFCSTDMND>-MANDT = 1.
<PPPFCSTDMND>-FORECAST = 1.
<PPPFCSTDMND>-FORECASTYEARMONTH = 1.
<PPPFCSTDMND>-FORECASTYEARQUARTER = 1.
<PPPFCSTDMND>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPPFCSTDMND-PRODUCTIONPLANT, sy-vline,
  WA_PPPFCSTDMND-REQUIREMENTTYPE, sy-vline,
  WA_PPPFCSTDMND-FORECASTDEMANDVERSION, sy-vline,
  WA_PPPFCSTDMND-REQUIREMENTPLAN, sy-vline,
  WA_PPPFCSTDMND-PLANNEDINDEPENDENTREQUIREMENT, sy-vline,
  WA_PPPFCSTDMND-MRPAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPPFCSTDMND 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_PPPFCSTDMND 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_PPPFCSTDMND INTO WA_PPPFCSTDMND.


*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 MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PPPFCSTDMND-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPPFCSTDMND-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRODUCTBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPPFCSTDMND-PRODUCTBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPPFCSTDMND-PRODUCTBASEUNIT.
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_PPPFCSTDMND_STR, 
MANDT TYPE STRING,
FORECAST TYPE STRING,
FORECASTYEARMONTH TYPE STRING,
FORECASTYEARQUARTER TYPE STRING,
MATERIAL TYPE STRING,
PRODUCTIONPLANT TYPE STRING,
REQUIREMENTTYPE TYPE STRING,
FORECASTDEMANDVERSION TYPE STRING,
REQUIREMENTPLAN TYPE STRING,
PLANNEDINDEPENDENTREQUIREMENT TYPE STRING,
MRPAREA TYPE STRING,
LASTVALIDFORECASTQTY TYPE STRING,
MAXFORECASTQTY TYPE STRING,
MINFORECASTQTY TYPE STRING,
NUMBEROFFORECASTS TYPE STRING,
AVGFORECASTQTY TYPE STRING,
PRODUCTBASEUNIT TYPE STRING,
DEMANDPLANNER TYPE STRING,
FORECASTPERIODMODE TYPE STRING,
CALENDARMONTH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPPFCSTDMND_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_PPPFCSTDMND_STR-MANDT sy-vline 
WA_PPPFCSTDMND_STR-FORECAST sy-vline 
WA_PPPFCSTDMND_STR-FORECASTYEARMONTH sy-vline 
WA_PPPFCSTDMND_STR-FORECASTYEARQUARTER sy-vline 
WA_PPPFCSTDMND_STR-MATERIAL sy-vline 
WA_PPPFCSTDMND_STR-PRODUCTIONPLANT sy-vline 
WA_PPPFCSTDMND_STR-REQUIREMENTTYPE sy-vline 
WA_PPPFCSTDMND_STR-FORECASTDEMANDVERSION sy-vline 
WA_PPPFCSTDMND_STR-REQUIREMENTPLAN sy-vline 
WA_PPPFCSTDMND_STR-PLANNEDINDEPENDENTREQUIREMENT sy-vline 
WA_PPPFCSTDMND_STR-MRPAREA sy-vline 
WA_PPPFCSTDMND_STR-LASTVALIDFORECASTQTY sy-vline 
WA_PPPFCSTDMND_STR-MAXFORECASTQTY sy-vline 
WA_PPPFCSTDMND_STR-MINFORECASTQTY sy-vline 
WA_PPPFCSTDMND_STR-NUMBEROFFORECASTS sy-vline 
WA_PPPFCSTDMND_STR-AVGFORECASTQTY sy-vline 
WA_PPPFCSTDMND_STR-PRODUCTBASEUNIT sy-vline 
WA_PPPFCSTDMND_STR-DEMANDPLANNER sy-vline 
WA_PPPFCSTDMND_STR-FORECASTPERIODMODE sy-vline 
WA_PPPFCSTDMND_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.