ABAP Select data from SAP table CMRPPURCHORDER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMRPPURCHORDER
*  INTO TABLE @DATA(IT_CMRPPURCHORDER2).
*--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_CMRPPURCHORDER INDEX 1 INTO DATA(WA_CMRPPURCHORDER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMRPPURCHORDER>-MANDT = 1.
<CMRPPURCHORDER>-PURCHASEORDER = 1.
<CMRPPURCHORDER>-PURCHASEORDERITEM = 1.
<CMRPPURCHORDER>-SCHEDULELINE = 1.
<CMRPPURCHORDER>-MRPPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMRPPURCHORDER-PURCHASEORDERITEMQUANTITYUNIT, sy-vline,
  WA_CMRPPURCHORDER-SCHEDULELINEOPENQUANTITY, sy-vline,
  WA_CMRPPURCHORDER-GOODSRECEIPTQUANTITY, sy-vline,
  WA_CMRPPURCHORDER-MRPREQUESTSTATUS, sy-vline,
  WA_CMRPPURCHORDER-MRPELEMENTCATEGORY, sy-vline,
  WA_CMRPPURCHORDER-MRPCONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMRPPURCHORDER 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_CMRPPURCHORDER 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_CMRPPURCHORDER INTO WA_CMRPPURCHORDER.


*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 ALPHA, internal->external for field PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field EMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-EMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-EMAILADDRESS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field PURCHASINGGROUPEMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-PURCHASINGGROUPEMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-PURCHASINGGROUPEMAILADDRESS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PROJECT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-PROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-PROJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SALESDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-SALESDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-SALESDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SALESORDERITEMMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMRPPURCHORDER-SALESORDERITEMMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMRPPURCHORDER-SALESORDERITEMMATERIAL.
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_CMRPPURCHORDER_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
SCHEDULELINE TYPE STRING,
MRPPLANT TYPE STRING,
PURCHASEORDERITEMQUANTITYUNIT TYPE STRING,
SCHEDULELINEOPENQUANTITY TYPE STRING,
GOODSRECEIPTQUANTITY TYPE STRING,
MRPREQUESTSTATUS TYPE STRING,
MRPELEMENTCATEGORY TYPE STRING,
MRPCONTROLLER TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERFULLNAME TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
EMAILADDRESS TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGGROUPPHONENUMBER TYPE STRING,
PURCHASINGGROUPEMAILADDRESS TYPE STRING,
MATERIALPROCUREMENTCATEGORY TYPE STRING,
MATERIALPROCUREMENTCATNAME TYPE STRING,
SCHEDULELINEORDERDATE TYPE STRING,
DELIVERYDATE TYPE STRING,
MATERIALGOODSRECEIPTDURATION TYPE STRING,
PRODUCTAVAILABILITYDATE TYPE STRING,
SCHEDULELINEORDERQUANTITY TYPE STRING,
MATERIALROUNDINGPROFILE TYPE STRING,
MATERIALROUNDINGPROFILENAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMERNAME TYPE STRING,
CUSTOMERFULLNAME TYPE STRING,
PHONENUMBER TYPE STRING,
WBSELEMENT TYPE STRING,
WBSDESCRIPTION TYPE STRING,
RESPONSIBLEPERSON TYPE STRING,
RESPONSIBLEPERSONNAME TYPE STRING,
PROJECT TYPE STRING,
PROJECTDESCRIPTION TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESORDERITEMMATERIAL TYPE STRING,
SALESORDERITEMMATERIALNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMRPPURCHORDER_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_CMRPPURCHORDER_STR-MANDT sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASEORDER sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASEORDERITEM sy-vline 
WA_CMRPPURCHORDER_STR-SCHEDULELINE sy-vline 
WA_CMRPPURCHORDER_STR-MRPPLANT sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASEORDERITEMQUANTITYUNIT sy-vline 
WA_CMRPPURCHORDER_STR-SCHEDULELINEOPENQUANTITY sy-vline 
WA_CMRPPURCHORDER_STR-GOODSRECEIPTQUANTITY sy-vline 
WA_CMRPPURCHORDER_STR-MRPREQUESTSTATUS sy-vline 
WA_CMRPPURCHORDER_STR-MRPELEMENTCATEGORY sy-vline 
WA_CMRPPURCHORDER_STR-MRPCONTROLLER sy-vline 
WA_CMRPPURCHORDER_STR-SUPPLIER sy-vline 
WA_CMRPPURCHORDER_STR-SUPPLIERNAME sy-vline 
WA_CMRPPURCHORDER_STR-SUPPLIERFULLNAME sy-vline 
WA_CMRPPURCHORDER_STR-SUPPLIERPHONENUMBER sy-vline 
WA_CMRPPURCHORDER_STR-EMAILADDRESS sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASINGGROUP sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASINGGROUPNAME sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASINGGROUPPHONENUMBER sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASINGGROUPEMAILADDRESS sy-vline 
WA_CMRPPURCHORDER_STR-MATERIALPROCUREMENTCATEGORY sy-vline 
WA_CMRPPURCHORDER_STR-MATERIALPROCUREMENTCATNAME sy-vline 
WA_CMRPPURCHORDER_STR-SCHEDULELINEORDERDATE sy-vline 
WA_CMRPPURCHORDER_STR-DELIVERYDATE sy-vline 
WA_CMRPPURCHORDER_STR-MATERIALGOODSRECEIPTDURATION sy-vline 
WA_CMRPPURCHORDER_STR-PRODUCTAVAILABILITYDATE sy-vline 
WA_CMRPPURCHORDER_STR-SCHEDULELINEORDERQUANTITY sy-vline 
WA_CMRPPURCHORDER_STR-MATERIALROUNDINGPROFILE sy-vline 
WA_CMRPPURCHORDER_STR-MATERIALROUNDINGPROFILENAME sy-vline 
WA_CMRPPURCHORDER_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMRPPURCHORDER_STR-CUSTOMER sy-vline 
WA_CMRPPURCHORDER_STR-CUSTOMERNAME sy-vline 
WA_CMRPPURCHORDER_STR-CUSTOMERFULLNAME sy-vline 
WA_CMRPPURCHORDER_STR-PHONENUMBER sy-vline 
WA_CMRPPURCHORDER_STR-WBSELEMENT sy-vline 
WA_CMRPPURCHORDER_STR-WBSDESCRIPTION sy-vline 
WA_CMRPPURCHORDER_STR-RESPONSIBLEPERSON sy-vline 
WA_CMRPPURCHORDER_STR-RESPONSIBLEPERSONNAME sy-vline 
WA_CMRPPURCHORDER_STR-PROJECT sy-vline 
WA_CMRPPURCHORDER_STR-PROJECTDESCRIPTION sy-vline 
WA_CMRPPURCHORDER_STR-SALESDOCUMENT sy-vline 
WA_CMRPPURCHORDER_STR-SALESORDERITEMMATERIAL sy-vline 
WA_CMRPPURCHORDER_STR-SALESORDERITEMMATERIALNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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