ABAP Select data from SAP table PSIMULATION into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSIMULATION
*  INTO TABLE @DATA(IT_PSIMULATION2).
*--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_PSIMULATION INDEX 1 INTO DATA(WA_PSIMULATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSIMULATION>-MANDT = 1.
<PSIMULATION>-CONFIGURATIONOBJECT = 1.
<PSIMULATION>-CONFIGURATIONOBJECTITEM = 1.
<PSIMULATION>-CREATEDBYUSER = 1.
<PSIMULATION>-CREATIONDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSIMULATION-LASTCHANGEDBYUSER, sy-vline,
  WA_PSIMULATION-LASTCHANGEDATE, sy-vline,
  WA_PSIMULATION-DRAFTUUID, sy-vline,
  WA_PSIMULATION-PLANT, sy-vline,
  WA_PSIMULATION-PRODUCT, sy-vline,
  WA_PSIMULATION-PRODUCTCONFIGURATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSIMULATION 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_PSIMULATION 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_PSIMULATION INTO WA_PSIMULATION.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PSIMULATION-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIMULATION-PRODUCT.
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_PSIMULATION_STR, 
MANDT TYPE STRING,
CONFIGURATIONOBJECT TYPE STRING,
CONFIGURATIONOBJECTITEM TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
DRAFTUUID TYPE STRING,
PLANT TYPE STRING,
PRODUCT TYPE STRING,
PRODUCTCONFIGURATION TYPE STRING,
VARIANTCONFIGURATIONSIMLNNAME TYPE STRING,
CREATIONTIME TYPE STRING,
LASTCHANGETIME TYPE STRING,
HASACTIVEENTITY TYPE STRING,
CONFIGURATIONPROFILENUMBER TYPE STRING,
VARIANTCONFIGURATIONSIMLNDATE TYPE STRING,
TEMPLATECONFIGUREDOBJECTTYPE TYPE STRING,
TEMPLATECONFIGUREDOBJECT TYPE STRING,
TEMPLATECONFIGUREDOBJECTITEM TYPE STRING,
CONFIGURATIONSTATUS TYPE STRING,
VARCONFIGNSIMLNEXTERNALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSIMULATION_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_PSIMULATION_STR-MANDT sy-vline 
WA_PSIMULATION_STR-CONFIGURATIONOBJECT sy-vline 
WA_PSIMULATION_STR-CONFIGURATIONOBJECTITEM sy-vline 
WA_PSIMULATION_STR-CREATEDBYUSER sy-vline 
WA_PSIMULATION_STR-CREATIONDATE sy-vline 
WA_PSIMULATION_STR-LASTCHANGEDBYUSER sy-vline 
WA_PSIMULATION_STR-LASTCHANGEDATE sy-vline 
WA_PSIMULATION_STR-DRAFTUUID sy-vline 
WA_PSIMULATION_STR-PLANT sy-vline 
WA_PSIMULATION_STR-PRODUCT sy-vline 
WA_PSIMULATION_STR-PRODUCTCONFIGURATION sy-vline 
WA_PSIMULATION_STR-VARIANTCONFIGURATIONSIMLNNAME sy-vline 
WA_PSIMULATION_STR-CREATIONTIME sy-vline 
WA_PSIMULATION_STR-LASTCHANGETIME sy-vline 
WA_PSIMULATION_STR-HASACTIVEENTITY sy-vline 
WA_PSIMULATION_STR-CONFIGURATIONPROFILENUMBER sy-vline 
WA_PSIMULATION_STR-VARIANTCONFIGURATIONSIMLNDATE sy-vline 
WA_PSIMULATION_STR-TEMPLATECONFIGUREDOBJECTTYPE sy-vline 
WA_PSIMULATION_STR-TEMPLATECONFIGUREDOBJECT sy-vline 
WA_PSIMULATION_STR-TEMPLATECONFIGUREDOBJECTITEM sy-vline 
WA_PSIMULATION_STR-CONFIGURATIONSTATUS sy-vline 
WA_PSIMULATION_STR-VARCONFIGNSIMLNEXTERNALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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