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Creating and Using User-Defined Casts in Dynamic Server

In This Chapter
What Is a Cast?
Creating User-Defined Casts
Invoking Casts
Restrictions on User-Defined Casts
Casting Row Types
Casting Between Named and Unnamed Row Types
Casting Between Unnamed Row Types
Casting Between Named Row Types
Using Explicit Casts on Fields
Explicit Casts on Fields of an Unnamed Row Type
Explicit Casts on Fields of a Named Row Type
Casting Individual Fields of a Row Type
Casting Collection Data Types
Restrictions on Collection-Type Conversions
Collections with Different Element Types
Using an Implicit Cast Between Element Types
Using an Explicit Cast Between Element Types
Converting Relational Data to a MULTISET Collection
Casting Distinct Data Types
Using Explicit Casts with Distinct Types
Casting Between a Distinct Type and Its Source Type
Adding and Dropping Casts on a Distinct Type
Casting to Smart Large Objects
Creating Cast Functions for User-Defined Casts
An Example of Casting Between Named Row Types
An Example of Casting Between Distinct Data Types
Multilevel Casting
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