Is there a simple tool to convert mysql to postgresql syntax? - mysql

Question

I've tried the tools listed here, some with more success than others, but none gave me valid postgres syntax I could use (tinyint errors etc.)

Answer 1

There's a mysqldump option which makes it output PostgreSQL code:
mysqldump --compatible=postgresql ...
But that doesn't work too well.
Instead, please see the mysql-to-postgres tool as described in Linus Oleander's answer.

Answer 2

Try this one , it works like charm !!
http://www.sqlines.com/online

Answer 3

After some time on Google I found this post.
Install the mysql2psql gem using [sudo] gem install mysql2psql.
Create a config file by running mysql2psql. You'll see an error but a mysql2psql.yml file should have been created.
Edit mysql2psql.yml
Run mysql2psql again to migrate you data.
Tip: Set force_truncate to true in your mysql2psql.yml config file if you want the postgresql database to be cleared before migrating your data.

Answer 4

Install pgloader on Debian or Ubuntu:
sudo apt install pgloader
Login as the postgres user and create a database
sudo su postgres
createdb -O user db_migrated
Transfer data from the mysql database to postgresql
pgloader mysql://user#localhost/db postgresql:///db_migrated
Check also Dimitri Fontaine's rewrite of pgloader from python to common lisp so that he could implement real threading.
Installation on other platforms
To install pgloader on Windows, you can use the Windows Subsystem for Linux.
To install pgloader on Mac, you can use: brew install --HEAD pgloader.

Answer 5

I've used py-mysql2pgsql. After installation it needs only simple configuration file in yml format (source, destination), e.g.:
# if a socket is specified we will use that
# if tcp is chosen you can use compression
mysql:
hostname: localhost
port: 3306
socket: /tmp/mysql.sock
username: mysql2psql
password:
database: mysql2psql_test
compress: false
destination:
# if file is given, output goes to file, else postgres
file:
postgres:
hostname: localhost
port: 5432
username: mysql2psql
password:
database: mysql2psql_test
Usage:
> py-mysql2pgsql -h
usage: py-mysql2pgsql [-h] [-v] [-f FILE]
Tool for migrating/converting data from mysql to postgresql.
optional arguments:
-h, --help show this help message and exit
-v, --verbose Show progress of data migration.
-f FILE, --file FILE Location of configuration file (default:
mysql2pgsql.yml). If none exists at that path,
one will be created for you.
More on its home page https://github.com/philipsoutham/py-mysql2pgsql.

Answer 6

Have a look at PG Foundry, extra utilities for Postgres tend to live there. I believe that the tool you're looking for does exist though.

Answer 7

There is one piece of pay software listed on this postgresql page:
http://www.postgresql.org/download/products/1
and this is on pgFoundry:
http://pgfoundry.org/projects/mysql2pgsql/

Answer 8

This page lists the syntax differences, but a simple working query converter i haven't found yet. Using an ORM package instead of raw SQL could prevent these issues.
I'm currently hacking up a converter for a legacy codebase:
function mysql2pgsql($mysql){
return preg_replace("/limit (\d+), *(\d+)/i", "limit $1 offset $2", preg_replace("/as '([^']+)'/i", 'as "$1"', $mysql)); // Note: limit needs order
}
For CREATE statements, SQLines converts most of them online. I still had to edit the mysqldump afterwards, though:
"mediumtext" -> "text", "^LOCK.*" -> "", "^UNLOCK.*" -> "", "`" -> '"', "'" -> "''" in 'data', "0000-00-00" -> "2000-01-01", deduplicate constraint names, " CHARACTER SET utf8 " -> " ".
"int(10)" -> "int" was missed in the last table, so pass that part of the mysqldump through http://www.sqlines.com/online again.

Answer 9

you will most likely never get a tool for such task which would do all of your job for you. be prepared to do some refactoring work yourself.