[英]SQL “SCRIPT” command to backup h2 database
I have an application with h2
database. 我有一个带有
h2
数据库的应用程序。 I want to create .sql
file using SCRIPT
command in Java. 我想在Java中使用
SCRIPT
命令创建.sql
文件。
If I am executing it using Prepared Statement: 如果我使用Prepared语句执行它:
PreparedStatement stmt = con.prepareStatement("SCRIPT");
ResultSet rs = stmt.executeQuery();
Then how can I able to get whole result in single String. 然后,如何才能在单个String中获得整个结果。 I am new to Java so unable to find the way out to get result of that query because it doesn't contains column names in it.
我是Java新手,因此无法找到获取该查询结果的出路,因为它不包含列名。
Then I will write it in file using InputStream
. 然后,我将使用
InputStream
将其写入文件中。
If you want to backup into a file, the content of your H2
instance as a SQL script , you can directly use SCRIPT TO 'path/to/my/file.sql'
. 如果要将备份的
H2
实例的内容作为SQL脚本 备份到文件中,则可以直接使用SCRIPT TO 'path/to/my/file.sql'
。
try (Connection con = ...;
Statement stmt = conn.createStatement()) {
stmt.executeQuery(String.format("SCRIPT TO '%s'", sqlFilePath));
}
If you want to backup it as a ZIP archive , you can use BACKUP TO 'path/to/my/file.zip'
. 如果要将其备份为ZIP存档 ,则可以使用
BACKUP TO 'path/to/my/file.zip'
。
try (Connection con = ...;
Statement stmt = conn.createStatement()) {
stmt.executeQuery(String.format("BACKUP TO '%s'", zipFilePath));
}
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