steelwheels-data-hsqldb

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 Pentaho Mondrian OLAP engine.

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 Maven Central:

<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:

• chinook-data-hsqldb
• foodmart-data-hsqldb
• scott-data-hsqldb
• steelwheels-data-hsqldb

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: Maven Central
• Developers list: dev at calcite.apache.org (archive, subscribe)
• Issues: https://github.com/julianhyde/steelwheels-data-hsqldb/issues
• Release notes and history