Attribute a batch's dictionary-encoded UTF-8 column is emitted as.
Dictionary encoding is a storage detail: the attribute carries the decoded
string, and a null dictionary value becomes an explicit null attribute
rather than an omitted key or the zero-index value.
Attribute a batch's dictionary-encoded UTF-8 column is emitted as.
Dictionary encoding is a storage detail: the attribute carries the decoded
string, and a null dictionary value becomes an explicitnullattribute rather than an omitted key or the zero-index value.