migrate from postgres to mysql

Fabio Benavides Murillo wrote:

Hello

I have a problem, I want to migrate the data of a postgres' database to a
mysql's database, this because i need to move to a windows.

I tried making a postgres' backup using pg_dump, but this file doesn't

have

the insert in Transac-sql.

Any help is welcome

txs in advance!!

You can run PostgreSQL on windows.

-Robby

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On Thu, 2003-10-02 at 08:49, Fabio Benavides Murillo wrote:

Hello

I have a problem, I want to migrate the data of a postgres' database to a
mysql's database, this because i need to move to a windows.

You might also want to explore running PostgreSQL on windows. Currently
you can use Cygwin to stably run the current version of Pg. There is
also a native windows port on the way, if it's for development uses you
might want to test the beta.

I tried making a postgres' backup using pg_dump, but this file doesn't

have

the insert in Transac-sql.

Transact-SQL is actually Sybase's and MS SQL Server's dialect of SQL.

Perhaps you're referring to the use of COPY instead of INSERT
statements? If so see the help for pg_dump as you can have data dumped
as individual inserts (the -d and -D switches).

You'll probably have to do some editing of the dump by hand as well; to
change sequences to MySQL's auto_increment, remove any schema usages,
etc. I'm unaware of any automated tools as not many people migrate in
that direction ;).

Well, I've not done it, but you could do a

pg_dump -s dbname >schema.sql
pg_dump -d -a dbname >data.sql

to get just the schema in one file and the data in inserts in another
file. Then you could use a perl script driven by SQL::Translator (check
http://www.cpan.org) to translate the schema from Pg to MySQL. Create
the schema in MySQL, then load via the inserts.

In theory, should be easy; reality on the other hand...

Good luck,
Scott

On Thu, 2003-10-02 at 16:17, Arguile wrote:

On Thu, 2003-10-02 at 08:49, Fabio Benavides Murillo wrote:

Hello

I have a problem, I want to migrate the data of a postgres' database to a
mysql's database, this because i need to move to a windows.

You might also want to explore running PostgreSQL on windows. Currently
you can use Cygwin to stably run the current version of Pg. There is
also a native windows port on the way, if it's for development uses you
might want to test the beta.

I tried making a postgres' backup using pg_dump, but this file doesn't

have

the insert in Transac-sql.

Transact-SQL is actually Sybase's and MS SQL Server's dialect of SQL.

Perhaps you're referring to the use of COPY instead of INSERT
statements? If so see the help for pg_dump as you can have data dumped
as individual inserts (the -d and -D switches).

You'll probably have to do some editing of the dump by hand as well; to
change sequences to MySQL's auto_increment, remove any schema usages,
etc. I'm unaware of any automated tools as not many people migrate in
that direction ;).

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Scott Cain, Ph. D. cain@cshl.org
GMOD Coordinator (http://www.gmod.org/) 216-392-3087
Cold Spring Harbor Laboratory

In article <1065126701.1431.8.camel@localhost.localdomain>,
Scott Cain <cain@cshl.org> writes:

Well, I've not done it, but you could do a
pg_dump -s dbname >schema.sql
pg_dump -d -a dbname >data.sql

to get just the schema in one file and the data in inserts in another
file. Then you could use a perl script driven by SQL::Translator (check
http://www.cpan.org) to translate the schema from Pg to MySQL. Create
the schema in MySQL, then load via the inserts.

I'd replace the second call of pg_dump by a "COPY mytbl TO 'mytbl.txt'"
for each table in the DB and import it into MySQL with "LOAD DATA
[LOCAL] INFILE". This would be much faster than INSERTing.

Arguile schrieb:

You might also want to explore running PostgreSQL on windows. Currently
you can use Cygwin to stably run the current version of Pg. There is
also a native windows port on the way, if it's for development uses you
might want to test the beta.

I have searched the website but I cannot find any 7.4 beta binaries for
windows...
I thought the windows version was postponed until 7.5?

Thomas