object types

Oracle Collections and Object Types: Comparing for Equality

Oracle Collections and Object Types: Comparing for Equality

Oracle can easily compare data items of scalar data types (those that hold a single data value with no internal components – e.g. NUMBER, DATE or VARCHAR2). So, if a and b are two NUMBER variables, all you need to do to check whether they are the same or not, is test "if (a=b)". Can […]

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Referencing User Defined Types over DBLink: Problem and Alternatives

Consider a PL/SQL call to a function which returns a user-defined type (UDT) – say, a SQL Type object. This works well as long as the called function resides in the same database as the calling PL/SQL, but if the called function is in a remote database, the PL/SQL call via DBLink end ups with […]

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How to Perform MULTISET Operations on Nested Table of Objects

We’ve seen the easy working of MULTISET operations on nested tables of simple types (i.e. collections of text, numbers). And we’ve seen the problem with extending MULTISET operations to nested tables of complex types (i.e. those based on OBJECTs with multiple attributes). PL/SQL code when run with MULTISET operations on complex collections throws up the […]

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