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Nulls Make Things Easier?

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No logo availablePGCon - PostgreSQL Conference for Users and Developers, Andrea Ross
 Momjian, Bruce

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Nulls Make Things Easier?
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25
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CC Attribution - NonCommercial - ShareAlike 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor and the work or content is shared also in adapted form only under the conditions of this
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Production PlaceOttawa, Canada

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Abstract
Nulls are a very useful but also very error-prone relational database feature. This talk is designed to help applications developers better manage their use of Nulls. It covers the use of NULLs in relational databases, with a focus on Postgres behaviour. It covers three-value logic, comparing nulls, mapping nulls to strings, indexing nulls, and aggregates.