Review the ClickHouse Table Catalog
Keep the tables behind your business visible and understandable.
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
A growing table catalog slows down every analytics request.
- Keep table discovery fast
- Highlight operational changes
- Improve query planning
Setup
Build it in a few focused steps.
- 1Connect ClickHouse in Notis once.
- 2Create an automation for the weekly table catalog review.
- 3Tell Notis which databases to inspect and how to summarize useful table metadata.
- 4Pick a recurring schedule and choose a report channel.
- 5Test with one manual run and review the catalog report.
Questions about this workflow
What metadata is returned?
The action can return table names, engines, sizes, and row counts.
Can it identify unused tables?
Only if the available metadata or your stored history supports that conclusion.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Tasks to ClickHouse. A trigger fires from one place; an action lands in another.
Google Tasks 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.
New Task Created
Triggers when a new task is created in a Google Tasks list. Uses timestamp filtering (updatedMin) to efficiently detect new tasks.
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 Task List Created
Triggers when a new Google Tasks task list is created. This trigger monitors Google Tasks and fires when new task lists are detected.
List ClickHouse Databases
List all databases in the clickhouse instance. useful for discovering available databases before querying tables.
Task Details Changed
Triggers when a specific task's details change. This trigger monitors a single Google Task and fires when any of its details (title, notes, status, due date, completion, position) are modified.
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
Task List Changed
Triggers when a task list changes (title or content updates). This trigger monitors a specific Google Tasks list and fires when changes are detected.
Task Updated
Triggers when an existing task is updated in a Google Tasks list. This trigger monitors a specific task list and fires when tasks are modified.
Connect any two apps with Notis in the middle.
Google Tasks and ClickHouse, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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