H2 SQL database - INSERT if the record does not exist

Question

I would like initialize a H2 database, but I am not sure if the records exist. If they exist I don\'t want to do anything, but if they don\'t exist I would like to write the

Answer 1

To do this you can use MySQL Compatibility Mode in H2 database. Starting from 1.4.197 version it supports the following syntax: INSERT IGNORE INTO table_name VALUES ...

From this pull request:

INSERT IGNORE is not supported in Regular mode, you have to enable MySQL compatibility mode explicitly by appending ;MODE=MySQL to your database URL or by executing SET MODE MySQL statement.

From official site:

INSERT IGNORE is partially supported and may be used to skip rows with duplicate keys if ON DUPLICATE KEY UPDATE is not specified.