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Nothing
The only purpose of this data type is to represent cases where value is not expected. So you can't create a Nothing
type value.
For example, literal NULL has type of Nullable(Nothing)
. See more about Nullable.
The Nothing
type can also used to denote empty arrays:
:) SELECT toTypeName(array())
SELECT toTypeName([])
┌─toTypeName(array())─┐
│ Array(Nothing) │
└─────────────────────┘
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