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    <p>First I'm going to assume you aren't in a position to just copy the data/ directory, because if you are then using your existing snapshot/backup/restore will probably suffice (and test your backup/restore procedures into the bargain).</p> <p>In which case, if the two tables have the same structure generally the quickest, and ironically the easiest approach will be to use SELECT...INTO OUTFILE... on one end, and LOAD DATA INFILE... on the other.</p> <p>See <a href="http://dev.mysql.com/doc/refman/5.1/en/load-data.html" rel="noreferrer">http://dev.mysql.com/doc/refman/5.1/en/load-data.html</a> and .../select.html for definitive details.</p> <p>For trivial tables the following will work:</p> <pre><code>SELECT * FROM mytable INTO OUTFILE '/tmp/mytable.csv' FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' ESCAPED BY '\\\\' LINES TERMINATED BY '\\n' ; LOAD DATA INFILE '/tmp/mytable.csv' INTO TABLE mytable FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' ESCAPED BY '\\\\' LINES TERMINATED BY '\\n' ; </code></pre> <p>We have also used FIFO's to great effect to avoid the overhead of actually writing to disk, or if we do need to write to disk for some reason, to pipe it through gzip.</p> <p>ie.</p> <pre><code>mkfifo /tmp/myfifo gzip -c /tmp/myfifo &gt; /tmp/mytable.csv.gz &amp; ... SEL ECT... INTO OUTFILE '/tmp/myfifo' ..... wait gunzip -c /tmp/mytable.csv.gz &gt; /tmp/myfifo &amp; ... LOAD DATA INFILE /tmp/myfifo ..... wait </code></pre> <p>Basically, one you direct the table data to a FIFO you can compress it, munge it, or tunnel it across a network to your hearts content.</p>
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    1. POHow can I transfer data between 2 MySQL databases?
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    1. POHow can I transfer data between 2 MySQL databases?
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    1. COThanks, though it is in the dev.mysql manual but it is not working proberly. It is giving me this error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\n'' at line 1) It is not accepting '\n' .. why ?
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    2. COStack Overflow corrupted the sample query. In the source, the slash in the ESCAPED BY clause was escaped, but the escape was lost when converted to html. Sorry about that, I hadn't noticed the corruption - I've fixed it above.
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    3. COThis is exactly what I need to use to speed up backing up quite a large database, but I can't get your example to work. I can create the FIFO, and if I dump out to the pipe using mysqldump it works just fine. However, if I try to dump out to the pipe using SELECT ... INTO OUTFILE I get an error that "myfifo already exists".
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