ABAP Select data from SAP table IARUNSIMULATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IARUNSIMULATION
*  INTO TABLE @DATA(IT_IARUNSIMULATION2).
*--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_IARUNSIMULATION INDEX 1 INTO DATA(WA_IARUNSIMULATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IARUNSIMULATION>-MANDT = 1.
<IARUNSIMULATION>-ARUNUUID = 1.
<IARUNSIMULATION>-ATPCHECKUUID = 1.
<IARUNSIMULATION>-PLANT = 1.
<IARUNSIMULATION>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IARUNSIMULATION-SUPPLYASSIGNMENTSTATUS, sy-vline,
  WA_IARUNSIMULATION-REQUIREMENTTYPE, sy-vline,
  WA_IARUNSIMULATION-REQUIREMENTDOCUMENTNUMBER, sy-vline,
  WA_IARUNSIMULATION-REQUIREMENTDOCUMENTITEM, sy-vline,
  WA_IARUNSIMULATION-ASSIGNEDSUPPLYTYPE, sy-vline,
  WA_IARUNSIMULATION-SUPPLYNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IARUNSIMULATION 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_IARUNSIMULATION 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_IARUNSIMULATION INTO WA_IARUNSIMULATION.


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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IARUNSIMULATION-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IARUNSIMULATION-BASEUNIT.
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_IARUNSIMULATION_STR, 
MANDT TYPE STRING,
ARUNUUID TYPE STRING,
ATPCHECKUUID TYPE STRING,
PLANT TYPE STRING,
MATERIAL TYPE STRING,
SUPPLYASSIGNMENTSTATUS TYPE STRING,
REQUIREMENTTYPE TYPE STRING,
REQUIREMENTDOCUMENTNUMBER TYPE STRING,
REQUIREMENTDOCUMENTITEM TYPE STRING,
ASSIGNEDSUPPLYTYPE TYPE STRING,
SUPPLYNUMBER TYPE STRING,
SUPPLYITEM TYPE STRING,
SUPPLYSCHEDULELINE TYPE STRING,
BATCH TYPE STRING,
STORAGELOCATION TYPE STRING,
NORMALASSIGNEDQUANTITYINBSUNT TYPE STRING,
ASSIGNEDQUANTITYINBASEUNIT TYPE STRING,
FIXEDQUANTITYINBASEUNIT TYPE STRING,
SUPASSGMTRESERVEDQTYINBASEUNIT TYPE STRING,
ONHOLDQUANTITYINBASEUNIT TYPE STRING,
READYFORRELEASEQTYINBASEUNIT TYPE STRING,
INBOUNDASSIGNEDQUANTITYINBSUNT TYPE STRING,
BASEUNIT TYPE STRING,
REQUESTEDDATE TYPE STRING,
PRODUCTAVAILABILITYDATE TYPE STRING,
SUPPLYDELIVERYDATE TYPE STRING,
NUMBEROFDAYS TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEBYUSER TYPE STRING,
REQUIREMENTSEGMENT TYPE STRING,
STOCKSEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IARUNSIMULATION_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_IARUNSIMULATION_STR-MANDT sy-vline 
WA_IARUNSIMULATION_STR-ARUNUUID sy-vline 
WA_IARUNSIMULATION_STR-ATPCHECKUUID sy-vline 
WA_IARUNSIMULATION_STR-PLANT sy-vline 
WA_IARUNSIMULATION_STR-MATERIAL sy-vline 
WA_IARUNSIMULATION_STR-SUPPLYASSIGNMENTSTATUS sy-vline 
WA_IARUNSIMULATION_STR-REQUIREMENTTYPE sy-vline 
WA_IARUNSIMULATION_STR-REQUIREMENTDOCUMENTNUMBER sy-vline 
WA_IARUNSIMULATION_STR-REQUIREMENTDOCUMENTITEM sy-vline 
WA_IARUNSIMULATION_STR-ASSIGNEDSUPPLYTYPE sy-vline 
WA_IARUNSIMULATION_STR-SUPPLYNUMBER sy-vline 
WA_IARUNSIMULATION_STR-SUPPLYITEM sy-vline 
WA_IARUNSIMULATION_STR-SUPPLYSCHEDULELINE sy-vline 
WA_IARUNSIMULATION_STR-BATCH sy-vline 
WA_IARUNSIMULATION_STR-STORAGELOCATION sy-vline 
WA_IARUNSIMULATION_STR-NORMALASSIGNEDQUANTITYINBSUNT sy-vline 
WA_IARUNSIMULATION_STR-ASSIGNEDQUANTITYINBASEUNIT sy-vline 
WA_IARUNSIMULATION_STR-FIXEDQUANTITYINBASEUNIT sy-vline 
WA_IARUNSIMULATION_STR-SUPASSGMTRESERVEDQTYINBASEUNIT sy-vline 
WA_IARUNSIMULATION_STR-ONHOLDQUANTITYINBASEUNIT sy-vline 
WA_IARUNSIMULATION_STR-READYFORRELEASEQTYINBASEUNIT sy-vline 
WA_IARUNSIMULATION_STR-INBOUNDASSIGNEDQUANTITYINBSUNT sy-vline 
WA_IARUNSIMULATION_STR-BASEUNIT sy-vline 
WA_IARUNSIMULATION_STR-REQUESTEDDATE sy-vline 
WA_IARUNSIMULATION_STR-PRODUCTAVAILABILITYDATE sy-vline 
WA_IARUNSIMULATION_STR-SUPPLYDELIVERYDATE sy-vline 
WA_IARUNSIMULATION_STR-NUMBEROFDAYS sy-vline 
WA_IARUNSIMULATION_STR-CREATIONDATETIME sy-vline 
WA_IARUNSIMULATION_STR-LASTCHANGEBYUSER sy-vline 
WA_IARUNSIMULATION_STR-REQUIREMENTSEGMENT sy-vline 
WA_IARUNSIMULATION_STR-STOCKSEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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