Summary
This chapter introduced sample syntax and results for
selecting data from complex types using SELECT statements to query
a relational database. The section Select row-type data shows how to perform the
following actions:
- Select row-type data from typed tables and columns
- Use row-type expressions for field projections
The section Select from a collection shows
how to perform the following actions:
- Query columns that are defined on collection types
- Search for elements in a collection
- Query columns that are defined on nested collection types
The section Select rows within a table hierarchy shows how to perform the
following actions:
- Query a supertable with or without the ONLY keyword
- Specify an alias for a supertable