Can I have H2 autocreate a schema in an in-memory database?

database, h2, java, sql

Solution

Yes, H2 supports executing SQL statements when connecting. You could run a script, or just a statement or two:

String url = "jdbc:h2:mem:test;" + 
             "INIT=CREATE SCHEMA IF NOT EXISTS TEST"
String url = "jdbc:h2:mem:test;" + 
             "INIT=CREATE SCHEMA IF NOT EXISTS TEST\\;" + 
                  "SET SCHEMA TEST";
String url = "jdbc:h2:mem;" + 
             "INIT=RUNSCRIPT FROM '~/create.sql'\\;" + 
                  "RUNSCRIPT FROM '~/populate.sql'";

Please note the double backslash (`\\`) is only required within Java. The backslash(es) before `;` within the `INIT` is required.

Problem

(I've already seen the H2 database In memory - Init schema via Spring/Hibernate question; it is not applicable here.) I'd like to know if there's a setting in H2 that will allow me to auto-create a schema upon connecting to it. If it helps, I'm only interested in the in-memory case. H2 supports various semicolon-separated modifiers at the end of the URL, but I didn't find one for automatically creating a schema. Is there such a feature?

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