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Is there any command line tool for converting the MySQL database to PostgreSQL? I'd also like to know if there is a way to convert the database using the normal mysqldump command.

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Start here:… – a_horse_with_no_name Mar 29 '12 at 6:37
Whenever I see this, I cry tears of joy. – rfusca Jul 27 '12 at 16:01

4 Answers 4

have you tried:

mysqldump --compatible=postgresql dbname > export.sql

then do this to escape quotes

sed "s/\\\'/\'\'/g" export.sql > export1.sql

may need some more massaging so look at mysqldump doco more closely.

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I have tried the method given by you already but it is giving error when restoring in the postgresql – Mughil Mar 29 '12 at 11:58
@Mughil what is the error? – Janus Troelsen Jul 29 '12 at 0:04

There is actually a free migration tool that's quite easy to use, developed by EnterpriseDB themselves. It can be installed via the StackBuilder: Migration Toolkit

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I recently use a non-free tool from DBConvert to convert an access database to postgres, and found it well worth the money compared to the amount of time I wasted trying to do it reliably for free. The sell a similar tool for MySQL<->postgres, which I have not used, but may well be worth considering unless you are only interested in command line tools.

In case you are wondering I am not affiliated with them in any way :-)

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Here are a few open source tools, that can be very helpful:

FromMySqlToPostgreSql is a feature-reach tool and very easy to use.
It maps data-types, migrates constraints, indexes, PKs and FKs exactly as they were in your MySQL db.
Under the hood it uses PostgreSQL COPY, so data transfer is very fast.
FromMySqlToPostgreSql written in PHP (>= 5.4).

pgloader   is a data loading tool for PostgreSQL, using the COPY command. Its main advantage over just using

, and over using a Foreign Data Wrapper, is its transaction behaviour, where pgloader will keep a separate file of rejected data, but continue trying to copy good data in your database. The default PostgreSQL behaviour is transactional, which means that any erroneous line in the input data (file or remote database) will stop the entire bulk load for the table. pgloader also implements data reformatting, a typical example of that being the transformation of MySQL datestamps 0000-00-00 and 0000-00-00 00:00:00 to PostgreSQL
value (because our calendar never had a year zero).
pgloader written in LISP and distributed as source code, so you you need to compile it before using.

Hope it will help you...

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