H2:如何设置默认架构和数据库？

Question

我正在使用Liquibase我的数据库更新并对其进行测试H2.

我Spring用来配置属性.我用

dataSource.setUrl("jdbc:h2:mem:test_common");

连接到test_common数据库,但它没有成功.

我意识到H2 database != Schema,因此我尝试将默认架构设置test_common为

dataSource.setUrl("jdbc:h2:mem:test_common;INIT=CREATE SCHEMA test_common\\; SET SCHEMA test_common");

但这没有用,我把日志视为

INFO 5/26/14 2:24 PM:liquibase: Dropping Database Objects in schema: TEST_COMMON.PUBLIC
INFO 5/26/14 2:24 PM:liquibase: Creating database history table with name: PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: Creating database history table with name: PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: Successfully released change log lock
INFO 5/26/14 2:24 PM:liquibase: Successfully acquired change log lock
INFO 5/26/14 2:24 PM:liquibase: Reading from PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: Reading from PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: Reading from PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-1.xml::05192014.1525::h2: Reading from PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-1.xml::05192014.1525::h2: Table network created
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-1.xml::05192014.1525::h2: ChangeSet liquibase/2014/1-1.xml::05192014.1525::h2 ran successfully in 5ms
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-1.xml::05192014.1525::h2: Reading from PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: Reading from PUBLIC.DATABASECHANGELOG
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: New row inserted into network
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: New row inserted into network
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: New row inserted into network
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: New row inserted into network
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: New row inserted into network
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: New row inserted into network
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: ChangeSet liquibase/2014/1-2.xml::05192014.1525::h2 ran successfully in 5ms
INFO 5/26/14 2:24 PM:liquibase: liquibase/changelog.xml: liquibase/2014/1-2.xml::05192014.1525::h2: Reading from PUBLIC.DATABASECHANGELOG

如何在H2中设置默认架构和数据库名称？

Answer 1

默认架构是 PUBLIC

对于记录,Commands该SET SCHEMA命令的H2数据库站点的页面显示:

新连接的默认架构是PUBLIC.

该文档还指出您可以在连接时指定默认架构:

此设置可以附加到数据库URL:jdbc:h2:test; SCHEMA = ABC

只有一个数据库

至于访问各种数据库,H2不支持CLUSTER或的SQL标准概念CATALOG.您作为JDBC URL的一部分连接到一个特定的数据库(目录).与该数据库的连接仅限于该单个数据库.请参阅问题,您可以在H2中创建多个目录吗？以及Thomas Mueller的回答.

您可以打开到另一个数据库的另一个连接,但它将是完全独立的.

因此,谈论"默认数据库"与H2数据库没有任何意义.