https://github.com/dolthub/pg2mysql

Script to convert Postgres dump files to MySQL dump files
https://github.com/dolthub/pg2mysql

mysql mysqldump pgdump postgres postgresql

Last synced: 3 months ago
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Script to convert Postgres dump files to MySQL dump files

• Host: GitHub
• URL: https://github.com/dolthub/pg2mysql
• Owner: dolthub
• License: apache-2.0
• Created: 2022-01-19T20:26:59.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2023-10-09T22:00:05.000Z (over 1 year ago)
• Last Synced: 2024-05-01T11:28:25.813Z (10 months ago)
• Topics: mysql, mysqldump, pgdump, postgres, postgresql
• Language: Shell
• Homepage:
• Size: 121 KB
• Stars: 35
• Watchers: 5
• Forks: 10
• Open Issues: 9
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# pg2mysql

pg2mysql transforms a pgdump file on STDIN into a MySQL dump file on

STDOUT. Dump format must be `INSERT` statements, not binary or `COPY`

statements (ie. `pg_dump --insert `).

Usage:

```

./pg2mysql.pl < file.pgdump > mysql.sql

./pg2mysql.pl --skip table1 --skip table2 --insert_ignore < file.pgdump > mysql.sql 2>warnings.txt

```

It handles:

* `CREATE TABLE` statements, types converted to MySQL equivalents

* `INSERT INTO` statements, some values (like timestamp strings)

  massaged to work with MySQL

* `CREATE INDEX` statements

* `ALTER TABLE` statements (for foreign keys, other constraints)

* Sequence `nextval` column defaults translated to `auto_increment`

* With --insert_ignore, uses `INSERT IGNORE` statements to be more

  lenient with non-confirming values (at the cost of import accuracy)

  

All other statement types other than the ones above are ignored, and

echoed as SQL comments to STDERR. If you want them in your final

script, redirect STDERR to STDOUT with `2 >&1` when running the

script.

# Known issues

The script has a lot of limitations and there are surely bugs. If you

find some, file an issue to tell us. But these are the things we know

about:

* Only tables supported. Other schema entities like triggers, views,

  stored procedures are not created

* Some types badly / not supported

* Will convert a character varying type to longtext if no length is

  specified, which means MySQL won't be able to make it a key

# Requirements

You must have Perl installed at `/usr/bin/perl` to run the script directly.

# Credits

pg2mysql is heavily inspired and informed by this project of the same

name: https://github.com/ChrisLundquist/pg2mysql

Which in turn was adapated from this web form:

http://www.lightbox.ca/pg2mysql.php