How to query with NRQL: the mechanics of querying

Before using any tool, it's best to know how to use it. There's a process to creating, structuring, and writing queries with NRQL. Understanding the rules of querying with NRQL enables you to get the most from your data. Even if you've never queried anything before, just a basic understanding the rules allows you to access (almost) any data you need and visualize them in charts and dashboards.

Data exploration

One of the best ways to learn how to use NRQL is to access a New Relic query tool and use it to query your data. Here's an example of exploring your data using the query builder and the suggested entries from the interface.

The query begins with FROM followed by a space. The interface suggests available types of data, and you select Transaction from that list.

Next, choose an attribute using SELECT, and the query looks as follows:

FROM Transaction SELECT

Pressing space again causes the interface to suggest available attributes. In the example below, you choose appId.

This results in a very basic NRQL query using the required clause and statement (FROM and SELECT), and it provides a list of APM transactions and the associated appId for each, as shown below.

NRQL query examples

Here's an example of a slightly more in-depth NRQL query of Transaction data reported by APM. For this query:

• You choose Transaction as the data type.
• You use Select to determine the average duration.
• You group results by appName using Facet.
• You use Timeseries to display the data over an automated timespan.

FROM Transaction 
SELECT average(duration) 
  FACET appName 
  TIMESERIES auto

This generates a chart that looks like:

Here are some more query examples:

SELECT uniqueCount(user) FROM PageView 
  WHERE userAgentOS = 'Mac' 
  FACET countryCode
  SINCE 1 day ago 
  LIMIT 20

SELECT count(*)
 FROM Transaction
 FACET `Logged-in user`

SELECT count(*) FROM Transaction, PageView SINCE 3 days ago

SELECT function(attribute), function(attribute) ...
  FROM ...

SELECT min(duration), max(duration), average(duration)
  FROM PageView SINCE 1 week ago

Ready to learn more? Be sure to check out our introduction to NRQL if you haven't already, or learn how to use charts and dashboards with NRQL. If you want to start using NRQL right away, jump straight into our guided NRQL tutorial.