foodmart-data-hsqldb

Foodmart data set in hsqldb format

This project contains the FoodMart data set as an embedded HSQLDB database.

It originated as part of the test suite of the Pentaho Mondrian OLAP engine.

Schema

Foodmart contains 37 tables:

7 fact tables: sales_fact_1997, sales_fact_1998, sales_fact_dec_1998, inventory_fact_1997, inventory_fact_1998, salary, expense_fact
19 dimension tables: product, customer, time_by_day, employee and more
11 aggregate tables

Its size is about 24MB uncompressed, 8MB 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:

<dependencies>
  <dependency>
    <groupId>org.hsqldb</groupId>
    <artifactId>hsqldb</artifactId>
    <version>2.5.1</version>
  </dependency>
  <dependency>
    <groupId>net.hydromatic</groupId>
    <artifactId>foodmart-data-hsqldb</artifactId>
    <version>0.5</version>
  </dependency>
</dependencies>

(foodmart-data-hsqldb requires Java 8 or higher, and HSQLDB 2.0.0 or higher; Java 11 is required for HSQLDB 2.6.0 and higher.)

Now you can connect using Java code:

import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;

Connection connection =
    DriverManager.getConnection("jdbc:hsqldb:res:foodmart",
        "FOODMART", "FOODMART");
Statement statement = connection.createStatement();
ResultSet resultSet =
    statement.executeQuery("select \"employee_id\", \"full_name\"\n"
        + "from \"foodmart\".\"employee\"");
while (resultSet.next()) {
  System.out.println(resultSet.getInt(1) + ":" + resultSet.getString(2));
}
resultSet.close();
statement.close();
connection.close();

You can also connect using a JDBC interface such as sqlline. Make sure that foodmart-data-hsqldb.jar is on the class path, and start sqlline:

$ ./sqlline
sqlline version 1.12.0
sqlline> !connect jdbc:hsqldb:res:foodmart sa ""
0: jdbc:hsqldb:res:foodmart> select count(*) from "foodmart"."sales_fact_1997";
+----------------------+
|          C1          |
+----------------------+
| 86837                |
+----------------------+
1 row selected (0.004 seconds)
0: jdbc:hsqldb:res:foodmart> !quit

Get foodmart-data-hsqldb

From Maven

Get foodmart-data-hsqldb from Maven Central:

<dependency>
  <groupId>net.hydromatic</groupId>
  <artifactId>foodmart-data-hsqldb</artifactId>
  <version>0.5</version>
</dependency>

Download and build

Java version 11 or higher.

$ git clone git://github.com/julianhyde/foodmart-data-hsqldb.git
$ cd foodmart-data-hsqldb
$ ./mvnw install

On Windows, the last line is

> mvnw install

Make a release

See hydromatic-parent.

More information

License: Apache License, Version 2.0
Author: Julian Hyde
Blog: https://blog.hydromatic.net
Project page: http://www.hydromatic.net/foodmart-data-hsqldb
Source code: https://github.com/julianhyde/foodmart-data-hsqldb
Developers list: dev at calcite.apache.org (archive, subscribe)
Issues: https://github.com/julianhyde/foodmart-data-hsqldb/issues
Release notes and history

julianhyde / foodmart-data-hsqldb