Using queries in Azure Monitor Log Analytics
When you open Log Analytics, you have access to existing log queries. You can either run these queries without modification or use them as a starting point for your own queries. The available queries include examples provided by Azure Monitor and queries saved by your organization. This article describes the queries that are available and how you can discover and use them.
Select queries from the query interface which is available from two different locations in Log Analytics.
When you open Log Analytics, the Queries dialog automatically displayed. If you don't want this dialog to be automatically displayed, turn off the Always show Queries switch.
Each query is represented by a card. You can quickly scan through the queries to find what you need. You can run the query directly from the dialog or choose to load it to the query editor for modification.
It can also be accessed by clicking in the upper right of the screen on Queries.
The same functionality of the dialog experience can be accessed from the queries pane on the left-hand sidebar of Log Analytics. You can hover over a query name to get the query description and additional functionality.
Finding and filtering queries
The options in this section are available in both the dialog and sidebar query experience, but with a slightly different user interface.
Change the grouping of the queries by clicking the group by drop-down list. The grouping values also act as an active table of contents. Clicking one of the values on the left-hand side of the screen scrolls the queries view right to the item clicked. If your organization has created query packs with tags, the custom tags will be included in this list.
You can also filter the queries according to the group by values mentioned earlier. In the example query dialog, the filters are found at the top.
Combining group by and filter
The filter and group by functionality are designed to work in tandem. They provide flexibility in how queries are arranged. For example, if you're using a resource group with multiple resources, you may want to filter down to a specific resource type and arrange the resulting queries by topic.
Each query has multiple properties that help you group and find them. These properties are available for sorting and filtering, and you can define several of them when saving your own query. The types of properties are:
- Resource type – A resource as defined in Azure, such as a Virtual machine. See the Azure Monitor Table Reference for a full mapping of Azure Monitor Logs/Log Analytics tables to resource type.
- Category – A type of information such as Security or Audit. Categories are identical to the categories defined in the Tables side pane. See the Azure Monitor Table Reference for a full list of categories.
- Solution – An Azure Monitor solution associated with the queries
- Topic – The topic of the example query such as Activity Logs or App logs. The topic property is unique to example queries and may differ according to the specific resource type.
- Query Type - Defines the type of the query. Query Type may be Example Queries, Query pack Queries or Legacy Queries
- Labels - Custom labels that you can define and assign when you save your own query.
- Tags - Custom properties that can be defined when you create a query pack. Tags allow your organization to create their own taxonomies for organizing queries.
You can favorite frequently used queries to give you quicker access. Click the star next to the query to add it to Favorites. View your favorite queries from the Favorites option in the query interface.
Types of queries
The query interface is populated with the following types of queries:
Example queries: Example queries can provide instant insight into a resource and provide a nice way to start learning and using KQL, thus shortening the time it takes to start using Log Analytics. We have collected and curated over 500 example queries designed to provide you instant value and that number of example queries is continually growing.
Query packs: A query pack holds a collection of log queries, including queries that you save yourself. This includes the default query pack and any other query packs that your organization may have created in the subscription.
Legacy queries: Log queries previously saved in the query explorer experience and queries Azure solutions that are installed in the workspace. These are listed in the query dialog box under Legacy queries.
Legacy Quereis are only avaiable in a Log Analytics Workspace.
Effect of query scope
The queries that are available when you open Log Analytics is determined by the current query scope .
- For a workspace – All example queries and queries from query packs. Legacy queries in the workspace.
- For a single resource – Example queries and queries from query packs for the resource type.
- For a resource group - Example queries and queries from query packs for resource types in the resource group.
The more resources you have in your scope, the longer the time for the portal to filter and show the query dialog.