ABAP Select data from SAP table CEPDEMLIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEPDEMLIN
*  INTO TABLE @DATA(IT_CEPDEMLIN2).
*--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_CEPDEMLIN INDEX 1 INTO DATA(WA_CEPDEMLIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEPDEMLIN>-MANDT = 1.
<CEPDEMLIN>-ENGAGEMENTPROJECT = 1.
<CEPDEMLIN>-RESOURCEDEMANDUUID = 1.
<CEPDEMLIN>-WORKPACKAGE = 1.
<CEPDEMLIN>-ENGMNTPROJECTDELIVERYORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEPDEMLIN-RESOURCEDEMAND, sy-vline,
  WA_CEPDEMLIN-ENGAGEMENTPROJFINPLANUUID, sy-vline,
  WA_CEPDEMLIN-WORKPACKAGEUUID, sy-vline,
  WA_CEPDEMLIN-ENGAGEMENTPROJECTUUID, sy-vline,
  WA_CEPDEMLIN-ENGAGEMENTPROJECTCATEGORY, sy-vline,
  WA_CEPDEMLIN-ENGAGEMENTPROJECTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEPDEMLIN 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_CEPDEMLIN 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_CEPDEMLIN INTO WA_CEPDEMLIN.


*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_CEPDEMLIN-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEPDEMLIN-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_CEPDEMLIN_STR, 
MANDT TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
RESOURCEDEMANDUUID TYPE STRING,
WORKPACKAGE TYPE STRING,
ENGMNTPROJECTDELIVERYORG TYPE STRING,
RESOURCEDEMAND TYPE STRING,
ENGAGEMENTPROJFINPLANUUID TYPE STRING,
WORKPACKAGEUUID TYPE STRING,
ENGAGEMENTPROJECTUUID TYPE STRING,
ENGAGEMENTPROJECTCATEGORY TYPE STRING,
ENGAGEMENTPROJECTTYPE TYPE STRING,
ENGAGEMENTPROJECTSERVICEORG TYPE STRING,
ENGMTPROJFINPLANVERSION TYPE STRING,
ISUNITBASED TYPE STRING,
ENGAGEMENTPROJECTRESOURCETYPE TYPE STRING,
ENGAGEMENTPROJRESOURCETYPETEXT TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ENGAGEMENTPROJECTRESOURCE TYPE STRING,
ENGAGEMENTPROJRESOURCETEXT TYPE STRING,
PERSONNELNUMBER TYPE STRING,
WORKITEM TYPE STRING,
ENGAGEMENTPROJDELIVERYORGNAME TYPE STRING,
ENGMTPROJEMPLOYEEISSTAFFED TYPE STRING,
BILLINGCONTROLCATEGORY TYPE STRING,
BILLINGCONTROLCATEGORYTEXT TYPE STRING,
WORKITEMNAME TYPE STRING,
WORKPACKAGENAME TYPE STRING,
EMPLOYEE TYPE STRING,
EMPLOYEEFULLNAME TYPE STRING,
PLANSKILLTAGUUID TYPE STRING,
SUPPLIEDEMPLOYMENTINTERNALID TYPE STRING,
NUMBEROFSUPPLIEDEMPLOYEES TYPE STRING,
SUPPLIEDEMPLOYEEFULLNAME TYPE STRING,
SUPPLIEDEMPLOYEE TYPE STRING,
PROJECTSTAFFINGINSTRUCTIONTEXT TYPE STRING,
UNITOFMEASURE TYPE STRING,
CURRENCY TYPE STRING,
SUPPLYCOSTAMT TYPE STRING,
SUPPLYEFFORTQTY TYPE STRING,
SUPPLYREVNAMT TYPE STRING,
REMAININGDEMANDCOSTAMT TYPE STRING,
REMAININGDEMANDEFFORTQTY TYPE STRING,
REMAININGDEMANDREVNAMT TYPE STRING,
PLANNEDEXPENSEREVENUE TYPE STRING,
PLNDEFFORTQTY TYPE STRING,
PLNDCOSTAMT TYPE STRING,
PLNDREVNAMT TYPE STRING,
PLANNEDEXPENSECOST TYPE STRING,
STAFFINGEDITISALLOWED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEPDEMLIN_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_CEPDEMLIN_STR-MANDT sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECT sy-vline 
WA_CEPDEMLIN_STR-RESOURCEDEMANDUUID sy-vline 
WA_CEPDEMLIN_STR-WORKPACKAGE sy-vline 
WA_CEPDEMLIN_STR-ENGMNTPROJECTDELIVERYORG sy-vline 
WA_CEPDEMLIN_STR-RESOURCEDEMAND sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJFINPLANUUID sy-vline 
WA_CEPDEMLIN_STR-WORKPACKAGEUUID sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECTUUID sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECTCATEGORY sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECTTYPE sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECTSERVICEORG sy-vline 
WA_CEPDEMLIN_STR-ENGMTPROJFINPLANVERSION sy-vline 
WA_CEPDEMLIN_STR-ISUNITBASED sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECTRESOURCETYPE sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJRESOURCETYPETEXT sy-vline 
WA_CEPDEMLIN_STR-LASTCHANGEDATETIME sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJECTRESOURCE sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJRESOURCETEXT sy-vline 
WA_CEPDEMLIN_STR-PERSONNELNUMBER sy-vline 
WA_CEPDEMLIN_STR-WORKITEM sy-vline 
WA_CEPDEMLIN_STR-ENGAGEMENTPROJDELIVERYORGNAME sy-vline 
WA_CEPDEMLIN_STR-ENGMTPROJEMPLOYEEISSTAFFED sy-vline 
WA_CEPDEMLIN_STR-BILLINGCONTROLCATEGORY sy-vline 
WA_CEPDEMLIN_STR-BILLINGCONTROLCATEGORYTEXT sy-vline 
WA_CEPDEMLIN_STR-WORKITEMNAME sy-vline 
WA_CEPDEMLIN_STR-WORKPACKAGENAME sy-vline 
WA_CEPDEMLIN_STR-EMPLOYEE sy-vline 
WA_CEPDEMLIN_STR-EMPLOYEEFULLNAME sy-vline 
WA_CEPDEMLIN_STR-PLANSKILLTAGUUID sy-vline 
WA_CEPDEMLIN_STR-SUPPLIEDEMPLOYMENTINTERNALID sy-vline 
WA_CEPDEMLIN_STR-NUMBEROFSUPPLIEDEMPLOYEES sy-vline 
WA_CEPDEMLIN_STR-SUPPLIEDEMPLOYEEFULLNAME sy-vline 
WA_CEPDEMLIN_STR-SUPPLIEDEMPLOYEE sy-vline 
WA_CEPDEMLIN_STR-PROJECTSTAFFINGINSTRUCTIONTEXT sy-vline 
WA_CEPDEMLIN_STR-UNITOFMEASURE sy-vline 
WA_CEPDEMLIN_STR-CURRENCY sy-vline 
WA_CEPDEMLIN_STR-SUPPLYCOSTAMT sy-vline 
WA_CEPDEMLIN_STR-SUPPLYEFFORTQTY sy-vline 
WA_CEPDEMLIN_STR-SUPPLYREVNAMT sy-vline 
WA_CEPDEMLIN_STR-REMAININGDEMANDCOSTAMT sy-vline 
WA_CEPDEMLIN_STR-REMAININGDEMANDEFFORTQTY sy-vline 
WA_CEPDEMLIN_STR-REMAININGDEMANDREVNAMT sy-vline 
WA_CEPDEMLIN_STR-PLANNEDEXPENSEREVENUE sy-vline 
WA_CEPDEMLIN_STR-PLNDEFFORTQTY sy-vline 
WA_CEPDEMLIN_STR-PLNDCOSTAMT sy-vline 
WA_CEPDEMLIN_STR-PLNDREVNAMT sy-vline 
WA_CEPDEMLIN_STR-PLANNEDEXPENSECOST sy-vline 
WA_CEPDEMLIN_STR-STAFFINGEDITISALLOWED sy-vline      INTO ld_text SEPARATED BY SPACE.

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