Creating a Custom Query

Scenarios

You can use the query statements preset by Config or customize query statements based on resource configuration attributes to query specific cloud resource configurations.

This section includes the following content:

• Creating a Custom Query
• Using a Predefined Query
• Configuration Examples of Advanced Queries

Creating a Custom Query

1. Log in to the management console.
2. Click in the upper left corner. Under Management & Governance, click Config.
3. In the navigation pane on the left, choose Advanced Queries.
4. Choose the Custom Queries tab and click Create Query in the upper right corner.
   Figure 1 Creating a query
   

5. In the Query Editor, enter the query statements.

   On the left of the page, the Schema information is displayed. Schema information shows detailed resource attributes that are specified by the properties parameter in the statement. For details about query statements, see Configuration Examples of Advanced Queries.

6. Click Save Query and enter the query name and description.

   A query name can contain only digits, letters, underscores (_), and hyphens (-). It cannot exceed 64 characters.

7. Click OK.
   Figure 2 Save Query
   
   

   There is a limit to how many custom queries you can create. If you exceed this limit, you will receive a notification: "The maximum number of custom queries has been reached." Although the query cannot be saved, you can still run the query and export the results.

8. Click Run and then view the query results. Up to 4,000 query results can be displayed and exported.
9. Click Export and select the format of the file to be exported (CSV or JSON).

Using a Predefined Query

You can modify the name, description, and statement of a default query or a custom query and save it as a new query. The following procedure uses a default query as an example.

1. Choose Advanced Queries > Default Queries.

   All default queries are displayed in a list.

2. Click Query in the Operation column for the target query.

   Alternatively, click the query name and then click Query in the lower right corner of the query overview page.

   Figure 3 Default queries
   

3. In the Query Editor, modify the query.

   For details, see Configuration Examples of Advanced Queries.

4. Click Save As and enter the query name and description.
5. In the dialog box that is displayed, click OK.

   After a new query is created, the new query becomes a custom query and will be displayed in the custom query list.

   Figure 4 Saving a default query as a new query
   

Configuration Examples of Advanced Queries

Advanced queries use ResourceQL, a subset of SQL SELECT syntax, to query resource configuration data. You do not need to call specific APIs for the query or use multiple APIs to download full data and manually analyze the data. ResourceQL can only query data from the resources table.

Example quires are as follows:

• Example 1: List ECSs in the Stopped state.

  SELECT name
  FROM resources
  WHERE provider = 'ecs'
   AND type = 'cloudservers'
   AND properties.status = 'SHUTOFF'

• Example 2: List EVS disks with certain specifications.

  SELECT *
  FROM resources
  WHERE provider = 'evs'
   AND type = 'volumes'
   AND properties.size = 100

• Example 3: List OBS buckets queried by fuzzy search.

  SELECT *
  FROM resources
  WHERE provider = 'obs'
   AND type = 'buckets'
   AND name LIKE '%figure%'

• Example 4: List ECSs and the EVS disks attached to each ECS.

  SELECT ECS_EVS.id AS ecs_id, EVS.id AS evs_id
  FROM (
      SELECT id, evs_id
      FROM (
   SELECT id, transform(properties.ExtVolumesAttached, x -> x.id) AS evs_list
  	FROM resources
  	WHERE provider = 'ecs'
  		AND type = 'cloudservers'
  	) ECS
  	   CROSS JOIN UNNEST(evs_list) AS t (evs_id)
  ) ECS_EVS, (
  	SELECT id
  	FROM resources
  	WHERE provider = 'evs'
  		AND type = 'volumes'
  	) EVS
  WHERE ECS_EVS.evs_id = EVS.id

• Example 5: List ECSs and the EIPs bound to each ECS.

  SELECT ECS.id AS ECS_id, publicIpAddress AS ip_address
  FROM (
      SELECT id, transform(properties.addresses, x -> x.addr) AS ip_list
      FROM resources
      WHERE provider = 'ecs'
          AND type = 'cloudservers'
  ) ECS, (
          SELECT name, properties.publicIpAddress
          FROM resources
          WHERE provider = 'vpc'
              AND type = 'publicips'
              AND properties.type = 'EIP'
              AND properties.status = 'ACTIVE'
      ) EIP
  WHERE CONTAINS (ECS.ip_list, EIP.name)

• Example 6: List resources with a quantity greater than 100 in each region.

  WITH counts AS (
      SELECT region_id, provider, type, count(*) AS number
      FROM resources
      GROUP BY region_id, provider, type
  )
  SELECT *
  FROM counts
  WHERE number > 100

  For details about query statements, see ResourceQL Syntax.