Migrating MySQL database contents to PostgreSQL

Question

I refactored a project and wanted to try out PostgreSQL instead of MySQL. I now want to migrate the table contents of some tables.

The problem is, when I use a select query like this (don't bother about the names, is just an example)

SELECT id AS id_x, name AS name_x, name2 AS name2_x

I want to export the table data and import it into MySQL. The problem is, that the syntax for INSERT INTO is different in MySQL and PostgreSQL. I don't want to export the whole table, because I also changed some parts of the structure, tried to make it more performant etc. So I just want to get the table data, but I need those AS x thing, because the names of the columns have changed

I already found several links on this topic.

I can use mysqldump to dump the table and set the --compatible=name parameter. The problem here is, that I can't add a SELECT statement, right? I can only add a where check.

Then, I could use the mysql command to export the query I want, but mysql doesn't have any compatible parameter. How would I achieve that?

MrTux · Accepted Answer · 2016-03-08 11:20:25Z

1

You could consider to create a temporaty table by issuing

SELECT id AS id_x, name AS name_x, name2 AS name2_x FROM oldtable INTO temptable

And then as a second step export the temptable using mysqldump with the --compatible= parameter.

See https://dev.mysql.com/doc/refman/5.7/en/select-into.html

answered Mar 8, 2016 at 11:20

MrTux

34.4k30 gold badges120 silver badges158 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Musterknabe Over a year ago

I'm an idiot for not thinking about that haha. Thank you!

Collectives™ on Stack Overflow

Migrating MySQL database contents to PostgreSQL

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related