sql - Oracle Trigger on Insert or Delete or Update -

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trying create oracle trigger runs after table updated in way. i've been googling morning , came this:

create or replace trigger gb_qty_change after update or insert or delete on f_item_store each row declare   v_qty v_ad_on_hand%rowtype;   v_isbn td_item_description.td_identifier%type; begin     delete gb_transaction gb_tide = :new.itst_item_tide_code;     select td_identifier v_isbn td_item_description td_tide = :new.itst_item_tide_code;     select * v_qty v_ad_on_hand itst_item_tide_code = :new.itst_item_tide_code;     insert gb_transaction(gb_tide, gb_isbn, gb_used_on_hand, gb_new_on_hand)       values(:new.itst_item_tide_code, v_isbn, v_qty.used_on_hand, v_qty.new_on_hand); end; /

i'm trying keep single record per tide_code in new table.

v_ad_on_hand view pulls inventory count. gb_transaction new table i'm logging these events

comparing other peoples code looks should run i'm getting "warning: trigger created compilation errors."

the problem, believe :new designations delete trigger. there is, after all, no new value record expunged. can access :old values on delete.

if section trigger operation, can this.

create or replace trigger gb_qty_change  after update or insert or delete on f_item_store  each row  declare       v_qty v_ad_on_hand%rowtype;       v_isbn td_item_description.td_identifier%type;  begin    if inserting or updating     ... insert existing code   else     ... similar :old values deleting case   end if; end; /

incidentally, helpfull if tell error is, not had one. if compiling via sql*plus script, after forward slash call compile trigger after "end;" statement, add line says:

show errors trigger your_trigger_name;


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