Review your ClickHouse table inventory regularly
See the tables and size details ClickHouse returns in one scheduled report.
Trigger
Recurring schedule
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Action
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
Why this helps
Table sprawl makes it harder to find the data you need and notice datasets that may deserve attention.
- Review table listings without opening a separate analytics console.
- See available engine, size, and row count metadata.
- Keep the inventory cadence predictable.
Setup
Build it in a few focused steps.
- 1Connect ClickHouse once in the Notis portal.
- 2Create an automation and ask Notis to list tables and summarize returned metadata.
- 3Pick a recurring schedule and select a report destination.
- 4Set a cadence and timezone for the inventory.
- 5Test with one real run.
Questions about this workflow
Can it identify unused tables?
Not from table listing metadata alone. A usage history or retention rule must be supplied in an accessible data source.
Can I scope it to one database?
Include the database scope in your instruction if the action supports that parameter in your connection.
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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