Re: Removing NOT NULL constraint takes a long time. Why?
Posted by:
Rick James
Date: October 29, 2009 09:47PM
Any ALTER rebuilds the table, and rebuilds the indexes. Alas, it will take a long time for a table that big.
SHOW VARIABLES LIKE "%buffer%";
SHOW VARIABLES LIKE "%tmp%";
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Re: Removing NOT NULL constraint takes a long time. Why?
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