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Cassandra query editor

The Cassandra query editor or CQL query editor, is 's dedicated editor for CQL statements. This editor becomes visible in when you open a CQL file (.cql).

Cassandra query editor

This editor is comprised of the following user interface elements:

  1. Connection dropdown, which allows you to select which Cassandra database connection will receive the query.
  2. Keyspace dropdown, which allows you to select which Cassandra keyspace will be used for the query.
  3. Statement text area, where you the provide CQL statement(s) you want to execute; features content-assist and syntax highlighting for ease of use.
  4. Run button, which allows you to execute the written CQL command.
  5. Refresh button, which allows you to fetch the latest list of available connections.
  6. Results panel, where the results of your query will be displayed.

Export a CQL query to a Gloop Cassandra service

You can create a Gloop Cassandra service from a CQL file by right clicking the latter from the navigator and then choosing Export from the appearing context menu.

Keyspace

Cassandra uses the concept of a keyspace. A keyspace holds data objects, and allows you to specify options for data partitioning and replication strategy. A keyspace is often liked to a SQL schema/database.

You can create your own keyspace using the following command:

1
CREATE KEYSPACE employees WITH replication = {'class':'SimpleStrategy','replication_factor':1};

Upon execution, click the refresh button. By then, you'll be able to see the keyspace you created in the Keyspace dropdown.

Creating a new Cassandra keyspace

Content assist

The Cassandra query editor lets you write CQL statements faster through content assist. With content assist, possible query fragments will be suggested as you write.

To trigger content assist, press . A pop-up will appear right under the line where you pressed the shortcut. This pop-up is composed of a search text field and a list of proposals.

Proposals are possible content that can be injected based on the current context; they have a name and a category. Proposals can be searched by their complete names or short names. You can use the and arrow keys to navigate through the proposals whilst still having focus on the search text so you can search and select at the same time.

Query results

The Results panel lets you view CQL statement results. Results are paginated for your convenience; just use the next and previous button to navigate through the entries. To view the complete content of a cell, click the button beside the cell. A dialog will appear, displaying the requested content.