Updating a view in plsql Fast sex dates

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if you want the database to execute the update operation only if the specified condition is true.For a view to be inherently updatable, the following conditions must be met: In addition, if an inherently updatable view contains pseudocolumns or expressions, then you cannot update base table rows with an UPDATE statement that refers to any of these pseudocolumns or expressions.If you want a join view to be updatable, then all of the following conditions must be true: Generally, you should not rely on being able to perform an insert to a view unless you have specifically written an INSTEAD OF trigger for it.A PL/SQL nyelv elsajttshoz ezen tlmenően sok segtsget adhat az Ada nyelv ismerete.Ezen alapismeretek megtallhatk az [1], [3], [4], [5], [6], [8], [9], [10], [11], [12], [24] művekben.

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ADDRESSES_T1' create or replace trigger "ADDRESSES_T1" BEFORE insert or update on "ADDRESSES" for each row begin DECLARE l_lat NUMBER; l_lng NUMBER; l_postcode VARCHAR2(8) := : NEW. POSTCODE_TO_LAT_LNG_GM_API (l_postcode, l_lat, l_lng); :new.location = SDO_GEOMETRY(2001, --SDO_GTYPE 8307, --SDO_SRID SDO_POINT_TYPE(l_lng, --X lng l_lat, --Y lat null), --Z null, --SDO_ELEM_INFO_ARRAY null); END; Its throwing mutating table error because your trigger is getting fired on table ADDRESSES and inside the trigger body its updating the same table "ADDRESSES".

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