code. I would then
be able to refactor at a more leisurely pace.
Does the feature exist, or can it be created?
-- Dante
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I have a system that imports about 40 million records every 2 days into
a single table in MySQL. I was having problems with LOAD DATA
CONCURRENT LOCAL INFILE where the table I was importing into would lock
until the import was complete. Locks would prevent SELECTs also.
I converted the
found when
trying to get lock; try restarting transaction
Am I writing my query wrong or expecting behavior that MySQL doesn't
support?
-- Dante
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Michael Dykman wrote:
The query is probably fine.. that is just the lock doing it's job.
Take that advice literally.. when you fail with that class of
exception, delay a milli-second or two and retry. For a large PHP
site I designed, we had that behaviour built-in: up to three attempts
waits
I have on 'somecolumn'? When I manually
rewrite the query, I get the performance I expect but when I leave it as
it was, it's 100 times slower.
What's so special about NULL?
-- Dante
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http://www.upscene.com
Download Database Workbench for Oracle, MS SQL Server, Sybase SQL
Anywhere, MySQL, InterBase, NexusDB and Firebird!
Database questions? Check the forum:
http://www.databasedevelopmentforum.com
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Engine designed for this kind of
usage, or is there a another server that is commonly used along with
MySQL for this type of thing?
-- Dante
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Gavin Towey wrote:
Creating a temporary merge table works fine for me on 5.0.
Your table isn't innodb is it? That will fail with an error like you're
getting.
Strange. Now that I am on my home network and trying this again, it
seems to be working.
mysql SELECT version();
) { $start = 1; }
2, SELECT col FROM table WHERE $where LIMIT $start, $rows.
Option B is horrible for large result sets. Only drawback to A is the
tediousness of having 2 queries, but you get over that once you develop
a pattern for writing them that way.
-- Dante
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or is it on the
TODO list even? If it's not, how can I go about asking to have it put
on there?
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Rob Wultsch wrote:
On Wed, Oct 15, 2008 at 12:25 PM, D. Dante Lorenso [EMAIL PROTECTED] wrote:
There's an awesome feature that was added to PostgreSQL a while back called
RETURNING that allows you to make an INSERT, UPDATE, and DELETE statement
behave like a SELECT statement. You can do
D. Dante Lorenso wrote:
There's an awesome feature that was added to PostgreSQL a while back
called RETURNING that allows you to make an INSERT, UPDATE, and DELETE
statement behave like a SELECT statement.
...
Does RETURNING exist in any current release of MySQL or is it on the
TODO list even
?
Thank you!
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... support CONNECT BY
syntax? Help would be appreciated.
-- Dante
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of this tool for many years and
just recently started using their MySQL one.
-- Dante
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