ABAP Select data from SAP table CMRPCRLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMRPCRLIST
*  INTO TABLE @DATA(IT_CMRPCRLIST2).
*--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_CMRPCRLIST INDEX 1 INTO DATA(WA_CMRPCRLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMRPCRLIST>-MANDT = 1.
<CMRPCRLIST>-MRPELEMENT = 1.
<CMRPCRLIST>-MRPELEMENTITEM = 1.
<CMRPCRLIST>-MRPELEMENTSCHEDULELINE = 1.
<CMRPCRLIST>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMRPCRLIST-MRPPLANT, sy-vline,
  WA_CMRPCRLIST-MRPCONTROLLER, sy-vline,
  WA_CMRPCRLIST-MRPAREA, sy-vline,
  WA_CMRPCRLIST-COMPANYCODE, sy-vline,
  WA_CMRPCRLIST-CHANGEREQUESTUUID, sy-vline,
  WA_CMRPCRLIST-ORDEROPENQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMRPCRLIST 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_CMRPCRLIST 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_CMRPCRLIST INTO WA_CMRPCRLIST.


*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_CMRPCRLIST-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPCRLIST-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMRPCRLIST-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPCRLIST-QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMRPCRLIST-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPCRLIST-SUPPLIER.
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_CMRPCRLIST_STR, 
MANDT TYPE STRING,
MRPELEMENT TYPE STRING,
MRPELEMENTITEM TYPE STRING,
MRPELEMENTSCHEDULELINE TYPE STRING,
MATERIAL TYPE STRING,
MRPPLANT TYPE STRING,
MRPCONTROLLER TYPE STRING,
MRPAREA TYPE STRING,
COMPANYCODE TYPE STRING,
CHANGEREQUESTUUID TYPE STRING,
ORDEROPENQUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
MATERIALNAME TYPE STRING,
CHANGEREQUESTPROPOSEDDATE TYPE STRING,
EXCEPTIONMESSAGEID TYPE STRING,
EXCEPTIONMESSAGETEXT TYPE STRING,
DELIVERYDATE TYPE STRING,
MRPELEMENTCHGAVAILYORRQMTDATE TYPE STRING,
CHANGEREQUESTPROPOSEDQTY TYPE STRING,
TOTALQUANTITY TYPE STRING,
NMBROFDISCARDEDCHANGEREQUESTS TYPE STRING,
MRPREQUESTSUPPLIERRESPONSE TYPE STRING,
MRPREQUESTSUPPLIERRESPONSETEXT TYPE STRING,
SOLUTIONREQUESTSTATUS TYPE STRING,
SOLUTIONREQUESTSTATUSNAME TYPE STRING,
MRPEXCPTNPRPSLDATASOURCE TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERPLANT TYPE STRING,
GOODSRECEIPTDURATIONINDAYS TYPE STRING,
CHANGEREQUESTNOTE TYPE STRING,
MRPREQUESTPRIORITY TYPE STRING,
MRPREQUESTPRIORITYNAME TYPE STRING,
MRPREQUESTREASON TYPE STRING,
MRPREQUESTREASONNAME TYPE STRING,
MRPREQUESTREJECTION TYPE STRING,
MRPREQUESTREJECTIONNAME TYPE STRING,
MRPREQUESTCOSTOFCHANGEAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
UNITOFMEASURENUMBEROFDECIMALS TYPE STRING,
UNITOFMEASUREDSPNMBROFDCMLS TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMRPCRLIST_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_CMRPCRLIST_STR-MANDT sy-vline 
WA_CMRPCRLIST_STR-MRPELEMENT sy-vline 
WA_CMRPCRLIST_STR-MRPELEMENTITEM sy-vline 
WA_CMRPCRLIST_STR-MRPELEMENTSCHEDULELINE sy-vline 
WA_CMRPCRLIST_STR-MATERIAL sy-vline 
WA_CMRPCRLIST_STR-MRPPLANT sy-vline 
WA_CMRPCRLIST_STR-MRPCONTROLLER sy-vline 
WA_CMRPCRLIST_STR-MRPAREA sy-vline 
WA_CMRPCRLIST_STR-COMPANYCODE sy-vline 
WA_CMRPCRLIST_STR-CHANGEREQUESTUUID sy-vline 
WA_CMRPCRLIST_STR-ORDEROPENQUANTITY sy-vline 
WA_CMRPCRLIST_STR-QUANTITYUNIT sy-vline 
WA_CMRPCRLIST_STR-MATERIALNAME sy-vline 
WA_CMRPCRLIST_STR-CHANGEREQUESTPROPOSEDDATE sy-vline 
WA_CMRPCRLIST_STR-EXCEPTIONMESSAGEID sy-vline 
WA_CMRPCRLIST_STR-EXCEPTIONMESSAGETEXT sy-vline 
WA_CMRPCRLIST_STR-DELIVERYDATE sy-vline 
WA_CMRPCRLIST_STR-MRPELEMENTCHGAVAILYORRQMTDATE sy-vline 
WA_CMRPCRLIST_STR-CHANGEREQUESTPROPOSEDQTY sy-vline 
WA_CMRPCRLIST_STR-TOTALQUANTITY sy-vline 
WA_CMRPCRLIST_STR-NMBROFDISCARDEDCHANGEREQUESTS sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTSUPPLIERRESPONSE sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTSUPPLIERRESPONSETEXT sy-vline 
WA_CMRPCRLIST_STR-SOLUTIONREQUESTSTATUS sy-vline 
WA_CMRPCRLIST_STR-SOLUTIONREQUESTSTATUSNAME sy-vline 
WA_CMRPCRLIST_STR-MRPEXCPTNPRPSLDATASOURCE sy-vline 
WA_CMRPCRLIST_STR-SUPPLIER sy-vline 
WA_CMRPCRLIST_STR-SUPPLIERNAME sy-vline 
WA_CMRPCRLIST_STR-SUPPLIERPLANT sy-vline 
WA_CMRPCRLIST_STR-GOODSRECEIPTDURATIONINDAYS sy-vline 
WA_CMRPCRLIST_STR-CHANGEREQUESTNOTE sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTPRIORITY sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTPRIORITYNAME sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTREASON sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTREASONNAME sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTREJECTION sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTREJECTIONNAME sy-vline 
WA_CMRPCRLIST_STR-MRPREQUESTCOSTOFCHANGEAMOUNT sy-vline 
WA_CMRPCRLIST_STR-CURRENCY sy-vline 
WA_CMRPCRLIST_STR-UNITOFMEASURENUMBEROFDECIMALS sy-vline 
WA_CMRPCRLIST_STR-UNITOFMEASUREDSPNMBROFDCMLS sy-vline 
WA_CMRPCRLIST_STR-AUTHORIZATIONGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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