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Specifying cast properties
Specify cast options according to your needs. The detailed description is given below.
Comment
The box allows you to set optional text to describe the new cast.
Source Type
Specify the name of the source data type of the cast.
Target Type
Set the name of the target data type of the cast.
Function
The function used to perform the cast. The function name may be schema-qualified. If it is not, the function will be looked up in the schema search path. The function result data type must match the target type of the cast. Specify no function to indicate that no function is required to perform the cast.
Context (Assignment, Implicit, Explicit)
Assignment indicates that the cast may be invoked implicitly in assignment contexts. Implicit indicates that the cast may be invoked implicitly in any context. By default, a cast can be invoked only by an Explicit cast.
Note: Remember that if you want to be able to convert types both ways you need to declare casts both ways explicitly.
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