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  1. Flink
  2. FLINK-17063

Make null type be a possible result of a type inference

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      There are use cases that can benefit from making a null type a valid result of input and output type inference.

      Example. We can use null type in VALUES clause for a temporary placeholder that will be later inferred based on types of other rows.

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              dwysakowicz Dawid Wysakowicz
              dwysakowicz Dawid Wysakowicz
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