In a few days, I'm working for a data type that represents matrix in mathematical area. Does people favor to have this data type in the core, not only my extension?
If we understood the use case, it might help understand whether to include it or not.
Multi-dimensionality of arrays isn't always useful, so this could be good.
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Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services