Re: two dimensional statistics in Postgres

From: "Tomas Vondra" <tv(at)fuzzy(dot)cz>
To: "Gavin Flower" <GavinFlower(at)archidevsys(dot)co(dot)nz>
Cc: "Katharina Büchse" <katharina(dot)buechse(at)uni-jena(dot)de>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: two dimensional statistics in Postgres
Date: 2014-11-06 10:57:30
Message-ID: bc53125882aff5e17748a8dc61a13502.squirrel@2.emaily.eu
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Dne 6 Listopad 2014, 11:50, Gavin Flower napsal(a):
>
> Could you store a 2 dimensional histogram in a one dimensional array:
> A[z] = value, where z = col * rowSize + row (zero starting index)?

How would that work for columns with different data types?

Tomas

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