On Feb 21, 2007, at 10:26 AM, Scott Marlowe wrote:
The only thing I can think of that rewrites a whole postgresql table
would be reindexing it, or an update without a where clause (or a
where
clause that includes every row). Normal operations, like create
index,
add column, drop column, etc do not need to rewrite the table and
happen
almost instantly.
Reindexing won't re-write a table; clustering will. Also some ALTER
TABLE commands will (such as changing the data type of a column, or
creating a new column that's NOT NULL).
--
Jim Nasby [EMAIL PROTECTED]
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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