Orient course analysis with a ClickHouse schema overview
A new topic can be the moment to get a clear view of the database structures available for course analysis.
Trigger
New Canvas Discussion Topic
Polls a Canvas course for new discussion topics.
Action
Get Database Schema
Get comprehensive schema overview of an entire database including all tables and optionally their column definitions. essential for ai agents to understand the complete database structure in a single call.
Why this helps
Starting a new course discussion analysis without knowing the database structure adds avoidable searching and uncertainty.
- Get a broad schema overview from ClickHouse.
- See which tables may support later course analysis.
- Make data gaps apparent before building a query.
Setup
Build it in a few focused steps.
- 1Connect Canvas and ClickHouse once in the Notis portal.
- 2Create an automation with a prompt describing the schema overview you need.
- 3Ask Notis to retrieve the relevant ClickHouse database schema and summarize useful tables.
- 4Pick New Canvas Discussion Topic as the trigger and select a report destination.
- 5Test with one real new topic.
Questions about this workflow
Does the schema action return course activity results?
No. It returns schema information. Use it to understand available tables before creating a separate data query.
Can it tell whether a table contains discussion messages?
It can summarize schema details that ClickHouse returns, but table purpose may need to be documented or confirmed against sample records.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Canvas to ClickHouse. A trigger fires from one place; an action lands in another.
Canvas triggers
ClickHouse actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Execute ClickHouse Query
Execute a sql query in clickhouse and return the results. this is the primary action for querying data from clickhouse databases.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Database Schema
Get comprehensive schema overview of an entire database including all tables and optionally their column definitions. essential for ai agents to understand the complete database structure in a single call.
Canvas Assignment Graded
Polls Canvas for newly graded submissions for a specific assignment.
Get Table Schema
Get detailed schema information for a specific table including column definitions, types, keys, and optionally sample data. this is essential for ai agents to understand table structure before constructing queries.
New Canvas Assignment Submission
Polls Canvas for new submissions to a specific assignment.
List ClickHouse Databases
List all databases in the clickhouse instance. useful for discovering available databases before querying tables.
New Canvas Discussion Message
Polls Canvas discussion topics for new messages.
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
New Canvas Discussion Topic
Polls a Canvas course for new discussion topics.
New Course Created for User
Polls Canvas for newly created courses for a specific user.
New Canvas File Upload
Polls a Canvas course for new file uploads.
Connect any two apps with Notis in the middle.
Canvas and ClickHouse, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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