ABAP Select data from SAP table ISCHDPRDNRSCEDTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCHDPRDNRSCEDTS
*  INTO TABLE @DATA(IT_ISCHDPRDNRSCEDTS2).
*--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_ISCHDPRDNRSCEDTS INDEX 1 INTO DATA(WA_ISCHDPRDNRSCEDTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCHDPRDNRSCEDTS>-MANDT = 1.
<ISCHDPRDNRSCEDTS>-SIMULATIONSESSIONID = 1.
<ISCHDPRDNRSCEDTS>-WORKCENTER = 1.
<ISCHDPRDNRSCEDTS>-RESOURCEID = 1.
<ISCHDPRDNRSCEDTS>-PLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCHDPRDNRSCEDTS-WORKCENTERINTERNALID, sy-vline,
  WA_ISCHDPRDNRSCEDTS-WORKCENTERTYPECODE, sy-vline,
  WA_ISCHDPRDNRSCEDTS-WORKCENTERISPRIMARY, sy-vline,
  WA_ISCHDPRDNRSCEDTS-SCHEDULEDWORKCENTERTYPECODE, sy-vline,
  WA_ISCHDPRDNRSCEDTS-TIMEZONEID, sy-vline,
  WA_ISCHDPRDNRSCEDTS-CREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCHDPRDNRSCEDTS 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_ISCHDPRDNRSCEDTS 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_ISCHDPRDNRSCEDTS INTO WA_ISCHDPRDNRSCEDTS.


*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_ISCHDPRDNRSCEDTS_STR, 
MANDT TYPE STRING,
SIMULATIONSESSIONID TYPE STRING,
WORKCENTER TYPE STRING,
RESOURCEID TYPE STRING,
PLANT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
WORKCENTERISPRIMARY TYPE STRING,
SCHEDULEDWORKCENTERTYPECODE TYPE STRING,
TIMEZONEID TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCHDPRDNRSCEDTS_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_ISCHDPRDNRSCEDTS_STR-MANDT sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-SIMULATIONSESSIONID sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-WORKCENTER sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-RESOURCEID sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-PLANT sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-WORKCENTERINTERNALID sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-WORKCENTERTYPECODE sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-WORKCENTERISPRIMARY sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-SCHEDULEDWORKCENTERTYPECODE sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-TIMEZONEID sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-CREATEDBYUSER sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-CREATIONDATETIME sy-vline 
WA_ISCHDPRDNRSCEDTS_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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