ABAP Select data from SAP table IPPFCSTDMNDHDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPFCSTDMNDHDR
*  INTO TABLE @DATA(IT_IPPFCSTDMNDHDR2).
*--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_IPPFCSTDMNDHDR INDEX 1 INTO DATA(WA_IPPFCSTDMNDHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPFCSTDMNDHDR>-MANDT = 1.
<IPPFCSTDMNDHDR>-FORECAST = 1.
<IPPFCSTDMNDHDR>-FORECASTDEMANDVERSION = 1.
<IPPFCSTDMNDHDR>-MATERIAL = 1.
<IPPFCSTDMNDHDR>-PRODUCTIONPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPFCSTDMNDHDR-REQUIREMENTTYPE, sy-vline,
  WA_IPPFCSTDMNDHDR-REQUIREMENTPLAN, sy-vline,
  WA_IPPFCSTDMNDHDR-PLANNEDINDEPENDENTREQUIREMENT, sy-vline,
  WA_IPPFCSTDMNDHDR-MRPAREA, sy-vline,
  WA_IPPFCSTDMNDHDR-PLNDINDEPRQMTCONSUMPTIONSTRGY, sy-vline,
  WA_IPPFCSTDMNDHDR-PLNDINDEPRQMTISACTIVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPFCSTDMNDHDR 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_IPPFCSTDMNDHDR 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_IPPFCSTDMNDHDR INTO WA_IPPFCSTDMNDHDR.


*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_IPPFCSTDMNDHDR-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPFCSTDMNDHDR-MATERIAL.
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_IPPFCSTDMNDHDR_STR, 
MANDT TYPE STRING,
FORECAST TYPE STRING,
FORECASTDEMANDVERSION TYPE STRING,
MATERIAL TYPE STRING,
PRODUCTIONPLANT TYPE STRING,
REQUIREMENTTYPE TYPE STRING,
REQUIREMENTPLAN TYPE STRING,
PLANNEDINDEPENDENTREQUIREMENT TYPE STRING,
MRPAREA TYPE STRING,
PLNDINDEPRQMTCONSUMPTIONSTRGY TYPE STRING,
PLNDINDEPRQMTISACTIVE TYPE STRING,
PLNDINDEPRQMTCONSUMPTIONASSGMT TYPE STRING,
PLNDINDEPRQMTUSAGE TYPE STRING,
PLNDINDEPRQMTISTOBEDELETED TYPE STRING,
EXTERNALREQUIREMENTPLAN TYPE STRING,
REQUIREMENTSEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPFCSTDMNDHDR_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_IPPFCSTDMNDHDR_STR-MANDT sy-vline 
WA_IPPFCSTDMNDHDR_STR-FORECAST sy-vline 
WA_IPPFCSTDMNDHDR_STR-FORECASTDEMANDVERSION sy-vline 
WA_IPPFCSTDMNDHDR_STR-MATERIAL sy-vline 
WA_IPPFCSTDMNDHDR_STR-PRODUCTIONPLANT sy-vline 
WA_IPPFCSTDMNDHDR_STR-REQUIREMENTTYPE sy-vline 
WA_IPPFCSTDMNDHDR_STR-REQUIREMENTPLAN sy-vline 
WA_IPPFCSTDMNDHDR_STR-PLANNEDINDEPENDENTREQUIREMENT sy-vline 
WA_IPPFCSTDMNDHDR_STR-MRPAREA sy-vline 
WA_IPPFCSTDMNDHDR_STR-PLNDINDEPRQMTCONSUMPTIONSTRGY sy-vline 
WA_IPPFCSTDMNDHDR_STR-PLNDINDEPRQMTISACTIVE sy-vline 
WA_IPPFCSTDMNDHDR_STR-PLNDINDEPRQMTCONSUMPTIONASSGMT sy-vline 
WA_IPPFCSTDMNDHDR_STR-PLNDINDEPRQMTUSAGE sy-vline 
WA_IPPFCSTDMNDHDR_STR-PLNDINDEPRQMTISTOBEDELETED sy-vline 
WA_IPPFCSTDMNDHDR_STR-EXTERNALREQUIREMENTPLAN sy-vline 
WA_IPPFCSTDMNDHDR_STR-REQUIREMENTSEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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