ABAP Select data from SAP table CPMRPSIM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPMRPSIM
*  INTO TABLE @DATA(IT_CPMRPSIM2).
*--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_CPMRPSIM INDEX 1 INTO DATA(WA_CPMRPSIM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPMRPSIM>-MANDT = 1.
<CPMRPSIM>-PMRPSIMULATION = 1.
<CPMRPSIM>-PMRPSIMULATIONDESCRIPTION = 1.
<CPMRPSIM>-PMRPREFERENCEPLAN = 1.
<CPMRPSIM>-PMRPREFERENCEPLANDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPMRPSIM-PMRPSIMULATIONSTATUS, sy-vline,
  WA_CPMRPSIM-PMRPSIMULATIONSTATUSNAME, sy-vline,
  WA_CPMRPSIM-SIMULATIONSTATUSCRITICALITY, sy-vline,
  WA_CPMRPSIM-CRITICALITY, sy-vline,
  WA_CPMRPSIM-CREATEDBYUSER, sy-vline,
  WA_CPMRPSIM-CREATEDBYUSERNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPMRPSIM 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_CPMRPSIM 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_CPMRPSIM INTO WA_CPMRPSIM.


*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 DELIVERYPERFORMANCEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPMRPSIM-DELIVERYPERFORMANCEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPMRPSIM-DELIVERYPERFORMANCEUNIT.
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_CPMRPSIM_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPSIMULATIONDESCRIPTION TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,
PMRPREFERENCEPLANDESCRIPTION TYPE STRING,
PMRPSIMULATIONSTATUS TYPE STRING,
PMRPSIMULATIONSTATUSNAME TYPE STRING,
SIMULATIONSTATUSCRITICALITY TYPE STRING,
CRITICALITY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATEDBYUSERNAME TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHANGEDBYUSERNAME TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
NUMBEROFCAPACITYISSUES TYPE STRING,
PREVIOUSNUMBEROFCAPACITYISSUES TYPE STRING,
CAPACITYCRITICALITY TYPE STRING,
CAPACITYISSUETREND TYPE STRING,
TOPLVLDMNDUNDRDELIVRATIOINPCT TYPE STRING,
PREVIOUSUNDRDELIVRATIOINPCT TYPE STRING,
DELIVERYPERFORMANCECRITICALITY TYPE STRING,
DELIVERYPERFORMANCETREND TYPE STRING,
DELIVERYPERFORMANCEUNIT TYPE STRING,
PMRPNUMBEROFBUCKETS TYPE STRING,
PMRPBUCKETCATEGORY TYPE STRING,
PMRPRSCEOVERLOADTOLERANCEPCT TYPE STRING,
PMRPSIMULATIONVERSIONCODE TYPE STRING,
PMRPSIMULATIONISOBSOLETE TYPE STRING,
NUMBEROFPRODUCTSWITHMISSINGSOS TYPE STRING,
PREVNMBROFPRODSWITHMISSINGSOS TYPE STRING,
INVALIDSRCEOFSUPCRITICALITY TYPE STRING,
INVALIDSOURCEOFSUPPLYTREND TYPE STRING,
PMRPNUMBEROFCONSTRAINTISSUES TYPE STRING,
PMRPPREVNMBROFCONSTRAINTISSUES TYPE STRING,
CONSTRAINTISSUESCRITICALITY TYPE STRING,
CONSTRAINTISSUESTREND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPMRPSIM_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_CPMRPSIM_STR-MANDT sy-vline 
WA_CPMRPSIM_STR-PMRPSIMULATION sy-vline 
WA_CPMRPSIM_STR-PMRPSIMULATIONDESCRIPTION sy-vline 
WA_CPMRPSIM_STR-PMRPREFERENCEPLAN sy-vline 
WA_CPMRPSIM_STR-PMRPREFERENCEPLANDESCRIPTION sy-vline 
WA_CPMRPSIM_STR-PMRPSIMULATIONSTATUS sy-vline 
WA_CPMRPSIM_STR-PMRPSIMULATIONSTATUSNAME sy-vline 
WA_CPMRPSIM_STR-SIMULATIONSTATUSCRITICALITY sy-vline 
WA_CPMRPSIM_STR-CRITICALITY sy-vline 
WA_CPMRPSIM_STR-CREATEDBYUSER sy-vline 
WA_CPMRPSIM_STR-CREATEDBYUSERNAME sy-vline 
WA_CPMRPSIM_STR-CREATIONDATETIME sy-vline 
WA_CPMRPSIM_STR-LASTCHANGEDBYUSER sy-vline 
WA_CPMRPSIM_STR-CHANGEDBYUSERNAME sy-vline 
WA_CPMRPSIM_STR-LASTCHANGEDATETIME sy-vline 
WA_CPMRPSIM_STR-NUMBEROFCAPACITYISSUES sy-vline 
WA_CPMRPSIM_STR-PREVIOUSNUMBEROFCAPACITYISSUES sy-vline 
WA_CPMRPSIM_STR-CAPACITYCRITICALITY sy-vline 
WA_CPMRPSIM_STR-CAPACITYISSUETREND sy-vline 
WA_CPMRPSIM_STR-TOPLVLDMNDUNDRDELIVRATIOINPCT sy-vline 
WA_CPMRPSIM_STR-PREVIOUSUNDRDELIVRATIOINPCT sy-vline 
WA_CPMRPSIM_STR-DELIVERYPERFORMANCECRITICALITY sy-vline 
WA_CPMRPSIM_STR-DELIVERYPERFORMANCETREND sy-vline 
WA_CPMRPSIM_STR-DELIVERYPERFORMANCEUNIT sy-vline 
WA_CPMRPSIM_STR-PMRPNUMBEROFBUCKETS sy-vline 
WA_CPMRPSIM_STR-PMRPBUCKETCATEGORY sy-vline 
WA_CPMRPSIM_STR-PMRPRSCEOVERLOADTOLERANCEPCT sy-vline 
WA_CPMRPSIM_STR-PMRPSIMULATIONVERSIONCODE sy-vline 
WA_CPMRPSIM_STR-PMRPSIMULATIONISOBSOLETE sy-vline 
WA_CPMRPSIM_STR-NUMBEROFPRODUCTSWITHMISSINGSOS sy-vline 
WA_CPMRPSIM_STR-PREVNMBROFPRODSWITHMISSINGSOS sy-vline 
WA_CPMRPSIM_STR-INVALIDSRCEOFSUPCRITICALITY sy-vline 
WA_CPMRPSIM_STR-INVALIDSOURCEOFSUPPLYTREND sy-vline 
WA_CPMRPSIM_STR-PMRPNUMBEROFCONSTRAINTISSUES sy-vline 
WA_CPMRPSIM_STR-PMRPPREVNMBROFCONSTRAINTISSUES sy-vline 
WA_CPMRPSIM_STR-CONSTRAINTISSUESCRITICALITY sy-vline 
WA_CPMRPSIM_STR-CONSTRAINTISSUESTREND sy-vline      INTO ld_text SEPARATED BY SPACE.

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