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Re: Question about \copy

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On Mar 11, 2009, at 1:21 PM, John Wang wrote:
I have a table, for example, Product. It's index is Product_index.

If I use \copy to load data into the table:

\copy Product from data.txt

Will the index, Product_index, also be updated with the new data during "copy"?

Yes, and indexes are updated row by row even if bulk loading with COPY. That's why when you're loading large amounts of data the index updating and constraint checking can slow it down. See the manual info on populating:

http://www.postgresql.org/docs/8.3/interactive/populate.html

-Jovan

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