ABAP Select data from SAP table IMRPCHANGEREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMRPCHANGEREQ
*  INTO TABLE @DATA(IT_IMRPCHANGEREQ2).
*--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_IMRPCHANGEREQ INDEX 1 INTO DATA(WA_IMRPCHANGEREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMRPCHANGEREQ>-MANDT = 1.
<IMRPCHANGEREQ>-CHANGEREQUESTUUID = 1.
<IMRPCHANGEREQ>-MRPPLANT = 1.
<IMRPCHANGEREQ>-MATERIAL = 1.
<IMRPCHANGEREQ>-MRPAREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMRPCHANGEREQ-CREATIONDATETIME, sy-vline,
  WA_IMRPCHANGEREQ-CREATEDBYUSER, sy-vline,
  WA_IMRPCHANGEREQ-GOODSRECEIPTDURATION, sy-vline,
  WA_IMRPCHANGEREQ-MRPELEMENT, sy-vline,
  WA_IMRPCHANGEREQ-MRPELEMENTITEM, sy-vline,
  WA_IMRPCHANGEREQ-MRPELEMENTSCHEDULELINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMRPCHANGEREQ 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_IMRPCHANGEREQ 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_IMRPCHANGEREQ INTO WA_IMRPCHANGEREQ.


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

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

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMRPCHANGEREQ-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMRPCHANGEREQ-MATERIALBASEUNIT.
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_IMRPCHANGEREQ_STR, 
MANDT TYPE STRING,
CHANGEREQUESTUUID TYPE STRING,
MRPPLANT TYPE STRING,
MATERIAL TYPE STRING,
MRPAREA TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
GOODSRECEIPTDURATION TYPE STRING,
MRPELEMENT TYPE STRING,
MRPELEMENTITEM TYPE STRING,
MRPELEMENTSCHEDULELINE TYPE STRING,
MRPPLANNINGSEGMENT TYPE STRING,
MRPPLANNINGSEGMENTTYPE TYPE STRING,
CHANGEREQUESTNOTE TYPE STRING,
SOLUTIONREQUESTSTATUS TYPE STRING,
SOLUTIONREQUESTSTATUSNAME TYPE STRING,
CHANGEREQUESTTYPE TYPE STRING,
CHANGEDDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERPLANT TYPE STRING,
MRPREQUESTSUPPLIERRESPONSE TYPE STRING,
MRPREQUESTSUPPLIERRESPONSETEXT TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
OPENQUANTITY TYPE STRING,
ORIGINALTOTALQUANTITY TYPE STRING,
MRPELEMENTCHANGEDOPENQUANTITY TYPE STRING,
TOTALQUANTITY TYPE STRING,
MRPELEMENTAVAILYORRQMTDATE TYPE STRING,
MRPELEMENTCHGAVAILYORRQMTDATE TYPE STRING,
CONTACTPERSON TYPE STRING,
CONTACTPERSONPHONENUMBER TYPE STRING,
CONTACTPERSONEMAILADDRESS TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
MRPREQUESTPRIORITY TYPE STRING,
MRPREQUESTREASON TYPE STRING,
MRPREQUESTREJECTION TYPE STRING,
MRPREQUESTDISTRIBUTIONSTATUS TYPE STRING,
MRPREQUESTDISTRIBUTEDDATETIME TYPE STRING,
MRPREQUESTCOSTOFCHANGEAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
HASATTACHMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMRPCHANGEREQ_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_IMRPCHANGEREQ_STR-MANDT sy-vline 
WA_IMRPCHANGEREQ_STR-CHANGEREQUESTUUID sy-vline 
WA_IMRPCHANGEREQ_STR-MRPPLANT sy-vline 
WA_IMRPCHANGEREQ_STR-MATERIAL sy-vline 
WA_IMRPCHANGEREQ_STR-MRPAREA sy-vline 
WA_IMRPCHANGEREQ_STR-CREATIONDATETIME sy-vline 
WA_IMRPCHANGEREQ_STR-CREATEDBYUSER sy-vline 
WA_IMRPCHANGEREQ_STR-GOODSRECEIPTDURATION sy-vline 
WA_IMRPCHANGEREQ_STR-MRPELEMENT sy-vline 
WA_IMRPCHANGEREQ_STR-MRPELEMENTITEM sy-vline 
WA_IMRPCHANGEREQ_STR-MRPELEMENTSCHEDULELINE sy-vline 
WA_IMRPCHANGEREQ_STR-MRPPLANNINGSEGMENT sy-vline 
WA_IMRPCHANGEREQ_STR-MRPPLANNINGSEGMENTTYPE sy-vline 
WA_IMRPCHANGEREQ_STR-CHANGEREQUESTNOTE sy-vline 
WA_IMRPCHANGEREQ_STR-SOLUTIONREQUESTSTATUS sy-vline 
WA_IMRPCHANGEREQ_STR-SOLUTIONREQUESTSTATUSNAME sy-vline 
WA_IMRPCHANGEREQ_STR-CHANGEREQUESTTYPE sy-vline 
WA_IMRPCHANGEREQ_STR-CHANGEDDATETIME sy-vline 
WA_IMRPCHANGEREQ_STR-LASTCHANGEDBYUSER sy-vline 
WA_IMRPCHANGEREQ_STR-SUPPLIER sy-vline 
WA_IMRPCHANGEREQ_STR-SUPPLIERPLANT sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTSUPPLIERRESPONSE sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTSUPPLIERRESPONSETEXT sy-vline 
WA_IMRPCHANGEREQ_STR-MATERIALBASEUNIT sy-vline 
WA_IMRPCHANGEREQ_STR-OPENQUANTITY sy-vline 
WA_IMRPCHANGEREQ_STR-ORIGINALTOTALQUANTITY sy-vline 
WA_IMRPCHANGEREQ_STR-MRPELEMENTCHANGEDOPENQUANTITY sy-vline 
WA_IMRPCHANGEREQ_STR-TOTALQUANTITY sy-vline 
WA_IMRPCHANGEREQ_STR-MRPELEMENTAVAILYORRQMTDATE sy-vline 
WA_IMRPCHANGEREQ_STR-MRPELEMENTCHGAVAILYORRQMTDATE sy-vline 
WA_IMRPCHANGEREQ_STR-CONTACTPERSON sy-vline 
WA_IMRPCHANGEREQ_STR-CONTACTPERSONPHONENUMBER sy-vline 
WA_IMRPCHANGEREQ_STR-CONTACTPERSONEMAILADDRESS sy-vline 
WA_IMRPCHANGEREQ_STR-AUTHORIZATIONGROUP sy-vline 
WA_IMRPCHANGEREQ_STR-COMPANYCODE sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTPRIORITY sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTREASON sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTREJECTION sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTDISTRIBUTIONSTATUS sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTDISTRIBUTEDDATETIME sy-vline 
WA_IMRPCHANGEREQ_STR-MRPREQUESTCOSTOFCHANGEAMOUNT sy-vline 
WA_IMRPCHANGEREQ_STR-CURRENCY sy-vline 
WA_IMRPCHANGEREQ_STR-HASATTACHMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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