Awesome
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Steelwheels data set in hsqldb format
This project contains the Steelwheels data set as an embedded HSQLDB database.
It originated as part of the test suite of the <a href="http://mondrian.pentaho.org">Pentaho Mondrian OLAP engine</a>.
Schema
Steelwheels contains 13 tables:
Table | Row count |
---|---|
customer_w_ter | 126 |
customers | 126 |
department_managers | 4 |
employees | 23 |
offices | 7 |
orderdetails | 3,001 |
orderfact | 2,996 |
orders | 330 |
payments | 272 |
products | 110 |
quadrant_actuals | 148 |
time | 265 |
trial_balance | 22 |
Its size is about 1MB uncompressed, 124KB compressed.
Here is a schema diagram:
Using the data set
The data set is packaged as a jar file that is published to Maven Central as a Maven artifact. To use the data in your Java application, add the artifact to your project's dependencies:
<dependency>
<groupId>net.hydromatic</groupId>
<artifactId>steelwheels-data-hsqldb</artifactId>
<version>0.2</version>
</dependency>
Now you can connect using Java code:
import java.sql.Connection;
final String url = "jdbc:hsqldb:res:steelwheels";
final String user = "STEELWHEELS";
final String password = "STEELWHEELS";
final String sql = "select lastname"\n"
+ "from \"steelwheels\".\"employees\"";
try (Connection c = DriverManager.getConnection(url, user, password);
Statement s = c.createStatement();
ResultSet r = s.executeQuery(sql)) {
while (r.next()) {
System.out.println(r.getString(1));
}
}
You can also connect using a JDBC interface such as sqlline.
Make sure that steelwheels-data-hsqldb.jar
is on the class path, and start sqlline
:
$ ./sqlline
sqlline version 1.12.0
sqlline> !connect jdbc:hsqldb:res:steelwheels sa ""
0: jdbc:hsqldb:res:steelwheels> select count(*) from "steelwheels"."employees";
+----------------------+
| C1 |
+----------------------+
| 23 |
+----------------------+
1 row selected (0.004 seconds)
0: jdbc:hsqldb:res:steelwheels> !quit
If you use username and password "STEELWHEELS" and "STEELWHEELS", the default schema is "steelwheels", so you can omit the table prefix, if you wish:
$ ./sqlline
sqlline version 1.12.0
sqlline> !connect jdbc:hsqldb:res:steelwheels STEELWHEELS STEELWHEELS
0: jdbc:hsqldb:res:steelwheels> select count(*) from "employees";
+----------------------+
| C1 |
+----------------------+
| 23 |
+----------------------+
1 row selected (0.004 seconds)
0: jdbc:hsqldb:res:steelwheels> !quit
Get steelwheels-data-hsqldb
From Maven
Get steelwheels-data-hsqldb from <a href="https://search.maven.org/#search%7Cga%7C1%7Cg%3Anet.hydromatic%20a%3Asteelwheels-data-hsqldb">Maven Central</a>:
<dependency>
<groupId>net.hydromatic</groupId>
<artifactId>steelwheels-data-hsqldb</artifactId>
<version>0.2</version>
</dependency>
Download and build
Java version 8 or higher.
$ git clone git://github.com/julianhyde/steelwheels-data-hsqldb.git
$ cd steelwheels-data-hsqldb
$ ./mvnw install
+On Windows, the last line is
> mvnw install
Make a release
See hydromatic-parent.
See also
Similar data sets:
More information
- License: Apache License, Version 2.0
- Author: Julian Hyde
- Blog: http://blog.hydromatic.net
- Project page: http://www.hydromatic.net/steelwheels-data-hsqldb
- Source code: https://github.com/julianhyde/steelwheels-data-hsqldb
- Distribution: <a href="https://search.maven.org/#search%7Cga%7C1%7Ca%3A%22steelwheels-data-hsqldb%22">Maven Central</a>
- Developers list: <a href="mailto:dev@calcite.apache.org">dev at calcite.apache.org</a> (<a href="https://mail-archives.apache.org/mod_mbox/calcite-dev/">archive</a>, <a href="mailto:dev-subscribe@calcite.apache.org">subscribe</a>)
- Issues: https://github.com/julianhyde/steelwheels-data-hsqldb/issues
- <a href="HISTORY.md">Release notes and history</a>