ABAP Select data from SAP table IPMRPSIMCHGH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPMRPSIMCHGH
*  INTO TABLE @DATA(IT_IPMRPSIMCHGH2).
*--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_IPMRPSIMCHGH INDEX 1 INTO DATA(WA_IPMRPSIMCHGH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPMRPSIMCHGH>-MANDT = 1.
<IPMRPSIMCHGH>-PMRPSIMULATION = 1.
<IPMRPSIMCHGH>-PMRPSIMULATIONCHANGE = 1.
<IPMRPSIMCHGH>-LASTCHANGEDATETIME = 1.
<IPMRPSIMCHGH>-LASTCHANGEBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPMRPSIMCHGH-PMRPCHANGETYPECODE, sy-vline,
  WA_IPMRPSIMCHGH-PMRPNUMBEROFCHANGEDOBJECTS, sy-vline,
  WA_IPMRPSIMCHGH-PMRPFIRSTBUCKET, sy-vline,
  WA_IPMRPSIMCHGH-PMRPLASTBUCKET, sy-vline,
  WA_IPMRPSIMCHGH-PMRPNODEID, sy-vline,
  WA_IPMRPSIMCHGH-PMRPRECEIPTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPMRPSIMCHGH 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_IPMRPSIMCHGH 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_IPMRPSIMCHGH INTO WA_IPMRPSIMCHGH.


*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_IPMRPSIMCHGH-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPSIMCHGH-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_IPMRPSIMCHGH_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPSIMULATIONCHANGE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEBYUSER TYPE STRING,
PMRPCHANGETYPECODE TYPE STRING,
PMRPNUMBEROFCHANGEDOBJECTS TYPE STRING,
PMRPFIRSTBUCKET TYPE STRING,
PMRPLASTBUCKET TYPE STRING,
PMRPNODEID TYPE STRING,
PMRPRECEIPTCATEGORY TYPE STRING,
UNITOFMEASURE TYPE STRING,
PMRPPREVIOUSRECEIPTQUANTITY TYPE STRING,
PMRPRECEIPTQUANTITY TYPE STRING,
PMRPSIMULATIONDESCRIPTION TYPE STRING,
PMRPRESOURCEINTERNALID TYPE STRING,
BUCKETINTERNALID TYPE STRING,
PREVADAPDCAPACITYRATEINPCT TYPE STRING,
ADAPTEDCAPACITYRATEINPERCENT TYPE STRING,
RECEIPTINTERNALID TYPE STRING,
PMRPCHANGEISDISCARDED TYPE STRING,
NUMBEROFCAPACITYISSUES TYPE STRING,
TOPLVLDMNDUNDRDELIVRATIOINPCT TYPE STRING,
NUMBEROFPRODUCTSWITHMISSINGSOS TYPE STRING,
NUMBEROFPRODUCTSOUTSIDESIMLN TYPE STRING,
PMRPNUMBEROFCONSTRAINTISSUES TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPMRPSIMCHGH_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_IPMRPSIMCHGH_STR-MANDT sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPSIMULATION sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPSIMULATIONCHANGE sy-vline 
WA_IPMRPSIMCHGH_STR-LASTCHANGEDATETIME sy-vline 
WA_IPMRPSIMCHGH_STR-LASTCHANGEBYUSER sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPCHANGETYPECODE sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPNUMBEROFCHANGEDOBJECTS sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPFIRSTBUCKET sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPLASTBUCKET sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPNODEID sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPRECEIPTCATEGORY sy-vline 
WA_IPMRPSIMCHGH_STR-UNITOFMEASURE sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPPREVIOUSRECEIPTQUANTITY sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPRECEIPTQUANTITY sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPSIMULATIONDESCRIPTION sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPRESOURCEINTERNALID sy-vline 
WA_IPMRPSIMCHGH_STR-BUCKETINTERNALID sy-vline 
WA_IPMRPSIMCHGH_STR-PREVADAPDCAPACITYRATEINPCT sy-vline 
WA_IPMRPSIMCHGH_STR-ADAPTEDCAPACITYRATEINPERCENT sy-vline 
WA_IPMRPSIMCHGH_STR-RECEIPTINTERNALID sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPCHANGEISDISCARDED sy-vline 
WA_IPMRPSIMCHGH_STR-NUMBEROFCAPACITYISSUES sy-vline 
WA_IPMRPSIMCHGH_STR-TOPLVLDMNDUNDRDELIVRATIOINPCT sy-vline 
WA_IPMRPSIMCHGH_STR-NUMBEROFPRODUCTSWITHMISSINGSOS sy-vline 
WA_IPMRPSIMCHGH_STR-NUMBEROFPRODUCTSOUTSIDESIMLN sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPNUMBEROFCONSTRAINTISSUES sy-vline 
WA_IPMRPSIMCHGH_STR-PMRPREFERENCEPLAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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