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Help with Postgres 9.1 data import (is 4x expected data size, 4x slower than MySQL, and index still needed)

I have 25 billion <int, int, float> rows that I'm trying to import into Postgres, and after 77% of the data being imported, the Postgres data folder is taking up 840GB, about 4x the storage ...
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1answer
172 views

Any way to estimate the required space for a SQL dump file?

I want to import a Wikipedia XML dump file into MySQL. The uncompressed XML dump file is 65GB. Does this mean I should free up almost 64GB in the MySQL data path? Is there any way to estimate the ...