Hello.
If you want to check presence of in-memory database you can add
;IFEXISTS=TRUE
to your database URL (something like
jdbc:h2:mem:database_name;IFEXISTS=TRUE).
With this argument an exception with error code 90013 will be thrown if
database is not exists.
If you want to check presence of a table in an opened database you can use
database metadata:
ResultSet rs = connection.getMetaData().getTables(null, "PUBLIC",
"TABLE_NAME", new String[] { "TABLE" });
if (rs.next) {
…
}
or a query from INFORMATION_SCHEMA.TABLES.
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