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Map Type

duckdb.org

MAPs are similar to STRUCTs in that they are an ordered list of key-value pairs. However, MAPs do not need to have the same keys present for each row, and thus are suitable for use cases where the schema is unknown beforehand or varies per row. MAPs must have a single type for all keys, and a single type for all values. Keys and values can be any type, and the type of the keys does not need to match the type of the…

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