ABAP Select data from SAP table /CPD/S_SC_RESOURCE_DEMAND into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CPD/S_SC_RESOURCE_DEMAND 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 /CPD/S_SC_RESOURCE_DEMAND. 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 /CPD/S_SC_RESOURCE_DEMAND 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_/CPD/S_SC_RESOURCE_DEMAND TYPE STANDARD TABLE OF /CPD/S_SC_RESOURCE_DEMAND,
      WA_/CPD/S_SC_RESOURCE_DEMAND TYPE /CPD/S_SC_RESOURCE_DEMAND,
      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: </CPD/S_SC_RESOURCE_DEMAND> TYPE /CPD/S_SC_RESOURCE_DEMAND.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CPD/S_SC_RESOURCE_DEMAND
  INTO TABLE IT_/CPD/S_SC_RESOURCE_DEMAND.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CPD/S_SC_RESOURCE_DEMAND
*  INTO TABLE @DATA(IT_/CPD/S_SC_RESOURCE_DEMAND2).
*--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_/CPD/S_SC_RESOURCE_DEMAND INDEX 1 INTO DATA(WA_/CPD/S_SC_RESOURCE_DEMAND2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CPD/S_SC_RESOURCE_DEMAND ASSIGNING </CPD/S_SC_RESOURCE_DEMAND>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CPD/S_SC_RESOURCE_DEMAND>-WORKPACKAGE = 1.
</CPD/S_SC_RESOURCE_DEMAND>-RESOURCEDEMAND = 1.
</CPD/S_SC_RESOURCE_DEMAND>-VERSION = 1.
</CPD/S_SC_RESOURCE_DEMAND>-ENGAGEMENTPROJECT = 1.
</CPD/S_SC_RESOURCE_DEMAND>-WORKPACKAGENAME = 1.

ENDLOOP.

LOOP AT IT_/CPD/S_SC_RESOURCE_DEMAND INTO WA_/CPD/S_SC_RESOURCE_DEMAND.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CPD/S_SC_RESOURCE_DEMAND-WORKITEM, sy-vline,
  WA_/CPD/S_SC_RESOURCE_DEMAND-WORKITEMNAME, sy-vline,
  WA_/CPD/S_SC_RESOURCE_DEMAND-BILLINGCONTROLCATEGORY, sy-vline,
  WA_/CPD/S_SC_RESOURCE_DEMAND-DELIVERYORGANIZATION, sy-vline,
  WA_/CPD/S_SC_RESOURCE_DEMAND-ENGAGEMENTPROJECTRESOURCETYPE, sy-vline,
  WA_/CPD/S_SC_RESOURCE_DEMAND-ENGAGEMENTPROJECTRESOURCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CPD/S_SC_RESOURCE_DEMAND 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_/CPD/S_SC_RESOURCE_DEMAND 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_/CPD/S_SC_RESOURCE_DEMAND INTO WA_/CPD/S_SC_RESOURCE_DEMAND.


*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 UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/CPD/S_SC_RESOURCE_DEMAND-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CPD/S_SC_RESOURCE_DEMAND-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_/CPD/S_SC_RESOURCE_DEMAND_STR, 
WORKPACKAGE TYPE STRING,
RESOURCEDEMAND TYPE STRING,
VERSION TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
WORKPACKAGENAME TYPE STRING,
WORKITEM TYPE STRING,
WORKITEMNAME TYPE STRING,
BILLINGCONTROLCATEGORY TYPE STRING,
DELIVERYORGANIZATION TYPE STRING,
ENGAGEMENTPROJECTRESOURCETYPE TYPE STRING,
ENGAGEMENTPROJECTRESOURCE TYPE STRING,
RESOURCEDEMANDSTATUS TYPE STRING,
PERSONWORKAGREEMENT TYPE STRING,
PERSONFULLNAME TYPE STRING,
UNITOFMEASURE TYPE STRING,
QUANTITY TYPE STRING,
CURRENCY TYPE STRING,
DEMANDCOSTAMT TYPE STRING,
DEMANDREVAMT TYPE STRING,
WORKFORCEPERSONUSERID TYPE STRING,
COUNTRY2DIGITISOCODE TYPE STRING,
KEYDATE TYPE STRING,
TO_RESOURCEDEMANDDISTRIBUTION TYPE STRING,
TO_RESOURCESUPPLY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CPD/S_SC_RESOURCE_DEMAND_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_/CPD/S_SC_RESOURCE_DEMAND_STR-WORKPACKAGE sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-RESOURCEDEMAND sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-VERSION sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-ENGAGEMENTPROJECT sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-WORKPACKAGENAME sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-WORKITEM sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-WORKITEMNAME sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-BILLINGCONTROLCATEGORY sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-DELIVERYORGANIZATION sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-ENGAGEMENTPROJECTRESOURCETYPE sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-ENGAGEMENTPROJECTRESOURCE sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-RESOURCEDEMANDSTATUS sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-PERSONWORKAGREEMENT sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-PERSONFULLNAME sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-UNITOFMEASURE sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-QUANTITY sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-CURRENCY sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-DEMANDCOSTAMT sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-DEMANDREVAMT sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-WORKFORCEPERSONUSERID sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-COUNTRY2DIGITISOCODE sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-KEYDATE sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-TO_RESOURCEDEMANDDISTRIBUTION sy-vline 
WA_/CPD/S_SC_RESOURCE_DEMAND_STR-TO_RESOURCESUPPLY sy-vline      INTO ld_text SEPARATED BY SPACE.

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