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Creating and Using User-Defined Casts in Dynamic Server

In This Chapter

What Is a Cast?

Creating User-Defined 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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