ABAP Select data from SAP table ISSUBSCRPNPRODDISCOUNTTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSUBSCRPNPRODDISCOUNTTP
*  INTO TABLE @DATA(IT_ISSUBSCRPNPRODDISCOUNTTP2).
*--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_ISSUBSCRPNPRODDISCOUNTTP INDEX 1 INTO DATA(WA_ISSUBSCRPNPRODDISCOUNTTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSUBSCRPNPRODDISCOUNTTP>-KEY = 1.
<ISSUBSCRPNPRODDISCOUNTTP>-PARENT_KEY = 1.
<ISSUBSCRPNPRODDISCOUNTTP>-ROOT_KEY = 1.
<ISSUBSCRPNPRODDISCOUNTTP>-CREATEDBYUSER = 1.
<ISSUBSCRPNPRODDISCOUNTTP>-CREATIONDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSUBSCRPNPRODDISCOUNTTP-LASTCHANGEDBYUSER, sy-vline,
  WA_ISSUBSCRPNPRODDISCOUNTTP-LASTCHANGEDATETIME, sy-vline,
  WA_ISSUBSCRPNPRODDISCOUNTTP-CABLLBLEITMDISCOUNTKEY, sy-vline,
  WA_ISSUBSCRPNPRODDISCOUNTTP-SUBSCRPNPRODDISCOUNTVALDFRMDTE, sy-vline,
  WA_ISSUBSCRPNPRODDISCOUNTTP-SUBSCRPNPRODDISCVALIDTODATE, sy-vline,
  WA_ISSUBSCRPNPRODDISCOUNTTP-SUBSCRPNCONTRACTRELEVANTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSUBSCRPNPRODDISCOUNTTP 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_ISSUBSCRPNPRODDISCOUNTTP 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_ISSUBSCRPNPRODDISCOUNTTP INTO WA_ISSUBSCRPNPRODDISCOUNTTP.


*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_ISSUBSCRPNPRODDISCOUNTTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CABLLBLEITMDISCOUNTKEY TYPE STRING,
SUBSCRPNPRODDISCOUNTVALDFRMDTE TYPE STRING,
SUBSCRPNPRODDISCVALIDTODATE TYPE STRING,
SUBSCRPNCONTRACTRELEVANTTYPE TYPE STRING,
SUBSCRPNPRODCHRGORDISCHASDURN TYPE STRING,
SUBSCRPNPRODCHRGORDISCDURN TYPE STRING,
DURATIONUNIT TYPE STRING,
SUBSCRPNCHRGANDDISCACTVTNCNDN TYPE STRING,
BRFFUNCTIONUUID TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARACTERISTICVALUE TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSUBSCRPNPRODDISCOUNTTP_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_ISSUBSCRPNPRODDISCOUNTTP_STR-KEY sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-PARENT_KEY sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-ROOT_KEY sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-CREATEDBYUSER sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-CREATIONDATETIME sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-LASTCHANGEDATETIME sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-CABLLBLEITMDISCOUNTKEY sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-SUBSCRPNPRODDISCOUNTVALDFRMDTE sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-SUBSCRPNPRODDISCVALIDTODATE sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-SUBSCRPNCONTRACTRELEVANTTYPE sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-SUBSCRPNPRODCHRGORDISCHASDURN sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-SUBSCRPNPRODCHRGORDISCDURN sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-DURATIONUNIT sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-SUBSCRPNCHRGANDDISCACTVTNCNDN sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-BRFFUNCTIONUUID sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-CHARACTERISTIC sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-CHARACTERISTICVALUE sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-ACTIVEUUID sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-HASACTIVEENTITY sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISSUBSCRPNPRODDISCOUNTTP_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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