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Proceedings of the 42nd ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems ,
1
SQL Nulls and Two-Valued Logic:
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Proceedings of the 42nd ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems ,
2
Querying Incomplete Numerical Data: Between Certain and Pos..:
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Proceedings of the 42nd ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems ,
3