ABAP Select data from SAP table IPMRPSIM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPMRPSIM
*  INTO TABLE @DATA(IT_IPMRPSIM2).
*--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_IPMRPSIM INDEX 1 INTO DATA(WA_IPMRPSIM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPMRPSIM>-MANDT = 1.
<IPMRPSIM>-PMRPSIMULATION = 1.
<IPMRPSIM>-PMRPREFERENCEPLAN = 1.
<IPMRPSIM>-PMRPSIMULATIONSTATUS = 1.
<IPMRPSIM>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPMRPSIM-CREATIONDATETIME, sy-vline,
  WA_IPMRPSIM-LASTCHANGEDBYUSER, sy-vline,
  WA_IPMRPSIM-LASTCHANGEDATETIME, sy-vline,
  WA_IPMRPSIM-PMRPNUMBEROFFLXBLCONSTRAINTS, sy-vline,
  WA_IPMRPSIM-NUMBEROFCAPACITYISSUES, sy-vline,
  WA_IPMRPSIM-PREVIOUSNUMBEROFCAPACITYISSUES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPMRPSIM 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_IPMRPSIM 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_IPMRPSIM INTO WA_IPMRPSIM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IPMRPSIM_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,
PMRPSIMULATIONSTATUS TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PMRPNUMBEROFFLXBLCONSTRAINTS TYPE STRING,
NUMBEROFCAPACITYISSUES TYPE STRING,
PREVIOUSNUMBEROFCAPACITYISSUES TYPE STRING,
TOPLVLDMNDUNDRDELIVRATIOINPCT TYPE STRING,
PREVIOUSUNDRDELIVRATIOINPCT TYPE STRING,
NUMBEROFPRODUCTSWITHMISSINGSOS TYPE STRING,
PREVNMBROFPRODSWITHMISSINGSOS TYPE STRING,
NUMBEROFPRODUCTSOUTSIDESIMLN TYPE STRING,
PREVNMBROFPRODUCTSOUTSIDESIMLN TYPE STRING,
PMRPRSCEOVERLOADTOLERANCEPCT TYPE STRING,
PMRPNUMBEROFCONSTRAINTISSUES TYPE STRING,
PMRPPREVNMBROFCONSTRAINTISSUES TYPE STRING,
PMRPSIMULATIONVERSIONCODE TYPE STRING,
PMRPSIMULATIONISOBSOLETE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPMRPSIM_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_IPMRPSIM_STR-MANDT sy-vline 
WA_IPMRPSIM_STR-PMRPSIMULATION sy-vline 
WA_IPMRPSIM_STR-PMRPREFERENCEPLAN sy-vline 
WA_IPMRPSIM_STR-PMRPSIMULATIONSTATUS sy-vline 
WA_IPMRPSIM_STR-CREATEDBYUSER sy-vline 
WA_IPMRPSIM_STR-CREATIONDATETIME sy-vline 
WA_IPMRPSIM_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPMRPSIM_STR-LASTCHANGEDATETIME sy-vline 
WA_IPMRPSIM_STR-PMRPNUMBEROFFLXBLCONSTRAINTS sy-vline 
WA_IPMRPSIM_STR-NUMBEROFCAPACITYISSUES sy-vline 
WA_IPMRPSIM_STR-PREVIOUSNUMBEROFCAPACITYISSUES sy-vline 
WA_IPMRPSIM_STR-TOPLVLDMNDUNDRDELIVRATIOINPCT sy-vline 
WA_IPMRPSIM_STR-PREVIOUSUNDRDELIVRATIOINPCT sy-vline 
WA_IPMRPSIM_STR-NUMBEROFPRODUCTSWITHMISSINGSOS sy-vline 
WA_IPMRPSIM_STR-PREVNMBROFPRODSWITHMISSINGSOS sy-vline 
WA_IPMRPSIM_STR-NUMBEROFPRODUCTSOUTSIDESIMLN sy-vline 
WA_IPMRPSIM_STR-PREVNMBROFPRODUCTSOUTSIDESIMLN sy-vline 
WA_IPMRPSIM_STR-PMRPRSCEOVERLOADTOLERANCEPCT sy-vline 
WA_IPMRPSIM_STR-PMRPNUMBEROFCONSTRAINTISSUES sy-vline 
WA_IPMRPSIM_STR-PMRPPREVNMBROFCONSTRAINTISSUES sy-vline 
WA_IPMRPSIM_STR-PMRPSIMULATIONVERSIONCODE sy-vline 
WA_IPMRPSIM_STR-PMRPSIMULATIONISOBSOLETE sy-vline      INTO ld_text SEPARATED BY SPACE.

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