ABAP Select data from SAP table PROJECTDEMAND_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PROJECTDEMAND_D
*  INTO TABLE @DATA(IT_PROJECTDEMAND_D2).
*--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_PROJECTDEMAND_D INDEX 1 INTO DATA(WA_PROJECTDEMAND_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PROJECTDEMAND_D>-MANDT = 1.
<PROJECTDEMAND_D>-PROJECTDEMANDUUID = 1.
<PROJECTDEMAND_D>-PROJECTDEMAND = 1.
<PROJECTDEMAND_D>-PROJECTDEMANDNAME = 1.
<PROJECTDEMAND_D>-PROJECTDEMANDDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PROJECTDEMAND_D-PROJECTDEMANDCATEGORY, sy-vline,
  WA_PROJECTDEMAND_D-PROJECTDEMANDTYPE, sy-vline,
  WA_PROJECTDEMAND_D-REFERENCEDOBJECTUUID, sy-vline,
  WA_PROJECTDEMAND_D-PROJECTDEMANDSTATUS, sy-vline,
  WA_PROJECTDEMAND_D-PROJECTDEMANDDATEMAINTENANCE, sy-vline,
  WA_PROJECTDEMAND_D-PROJECTDEMANDSTARTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PROJECTDEMAND_D 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_PROJECTDEMAND_D 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_PROJECTDEMAND_D INTO WA_PROJECTDEMAND_D.


*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 CUNIT, internal->external for field PROJDMNDREQUESTEDQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PROJECTDEMAND_D-PROJDMNDREQUESTEDQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROJECTDEMAND_D-PROJDMNDREQUESTEDQUANTITYUNIT.
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_PROJECTDEMAND_D_STR, 
MANDT TYPE STRING,
PROJECTDEMANDUUID TYPE STRING,
PROJECTDEMAND TYPE STRING,
PROJECTDEMANDNAME TYPE STRING,
PROJECTDEMANDDESCRIPTION TYPE STRING,
PROJECTDEMANDCATEGORY TYPE STRING,
PROJECTDEMANDTYPE TYPE STRING,
REFERENCEDOBJECTUUID TYPE STRING,
PROJECTDEMANDSTATUS TYPE STRING,
PROJECTDEMANDDATEMAINTENANCE TYPE STRING,
PROJECTDEMANDSTARTDATE TYPE STRING,
PROJECTDEMANDENDDATE TYPE STRING,
PROJECTDEMANDRELEASEDDATETIME TYPE STRING,
PROJDMNDACTUALSUPPLYDATE TYPE STRING,
PROJECTDEMANDPERUNITAMOUNT TYPE STRING,
PROJECTDEMANDREQUESTCURRENCY TYPE STRING,
PROJDMNDREQUESTEDQUANTITYUNIT TYPE STRING,
PRICEUNITQTY TYPE STRING,
PROJECTDEMANDREQUESTNETAMOUNT TYPE STRING,
PROJDMNDREQNETAMOUNTCURRENCY TYPE STRING,
PROJECTDEMANDOVERALLAMOUNT TYPE STRING,
PROJDMNDREQUESTEDQUANTITY TYPE STRING,
PLANT TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ACTIVEUUID 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_PROJECTDEMAND_D_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_PROJECTDEMAND_D_STR-MANDT sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDUUID sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMAND sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDNAME sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDDESCRIPTION sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDCATEGORY sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDTYPE sy-vline 
WA_PROJECTDEMAND_D_STR-REFERENCEDOBJECTUUID sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDSTATUS sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDDATEMAINTENANCE sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDSTARTDATE sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDENDDATE sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDRELEASEDDATETIME sy-vline 
WA_PROJECTDEMAND_D_STR-PROJDMNDACTUALSUPPLYDATE sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDPERUNITAMOUNT sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDREQUESTCURRENCY sy-vline 
WA_PROJECTDEMAND_D_STR-PROJDMNDREQUESTEDQUANTITYUNIT sy-vline 
WA_PROJECTDEMAND_D_STR-PRICEUNITQTY sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDREQUESTNETAMOUNT sy-vline 
WA_PROJECTDEMAND_D_STR-PROJDMNDREQNETAMOUNTCURRENCY sy-vline 
WA_PROJECTDEMAND_D_STR-PROJECTDEMANDOVERALLAMOUNT sy-vline 
WA_PROJECTDEMAND_D_STR-PROJDMNDREQUESTEDQUANTITY sy-vline 
WA_PROJECTDEMAND_D_STR-PLANT sy-vline 
WA_PROJECTDEMAND_D_STR-PURCHASINGGROUP sy-vline 
WA_PROJECTDEMAND_D_STR-PURCHASINGORGANIZATION sy-vline 
WA_PROJECTDEMAND_D_STR-CREATEDBYUSER sy-vline 
WA_PROJECTDEMAND_D_STR-CREATIONDATETIME sy-vline 
WA_PROJECTDEMAND_D_STR-LASTCHANGEDBYUSER sy-vline 
WA_PROJECTDEMAND_D_STR-LASTCHANGEDATETIME sy-vline 
WA_PROJECTDEMAND_D_STR-ACTIVEUUID sy-vline 
WA_PROJECTDEMAND_D_STR-HASACTIVEENTITY sy-vline 
WA_PROJECTDEMAND_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PROJECTDEMAND_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PROJECTDEMAND_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PROJECTDEMAND_D_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PROJECTDEMAND_D_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.