Find the ClickHouse tables behind new submissions
A new submission can be a useful cue to locate the tables you need for analysis.
Trigger
New Canvas Assignment Submission
Polls Canvas for new submissions to a specific assignment.
Action
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
Why this helps
Finding the right analytics table can take longer than the submission review itself, especially when several datasets look similar.
- See available tables when a new submission creates a reason to investigate.
- Reduce time spent guessing where analytics records are stored.
- Get table names and available metadata from ClickHouse.
Setup
Build it in a few focused steps.
- 1Connect Canvas and ClickHouse once in the Notis portal.
- 2Create an automation and describe the table discovery outcome in one instruction.
- 3Ask Notis to list ClickHouse tables and report candidates relevant to the new submission.
- 4Pick New Canvas Assignment Submission as the trigger and choose a report channel.
- 5Test with one real submission.
Questions about this workflow
Will this identify the exact matching table?
It can report table metadata and likely candidates. Confirm the table's meaning and keys before relying on it for analysis.
Does listing tables inspect submission contents?
The ClickHouse action lists tables. The Canvas event provides the submission trigger context, but table listing does not itself join or retrieve submission 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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