Request a ClickHouse schema overview on demand
Trigger a database structure review from another system with a simple request to Notis.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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
Schema discovery can interrupt focused work when you need a quick view of database structure.
- Request a database overview when another process needs it.
- Reduce manual table-by-table exploration.
- Send schema details to a report channel you already use.
Setup
Build it in a few focused steps.
- 1Connect ClickHouse once in the Notis portal.
- 2Create an automation in Automations, New Automation, and give it a name.
- 3Describe in one instruction which database schema to retrieve and what to include in the report.
- 4Pick a webhook as the trigger and choose where run reports go.
- 5Test with one real HTTP request and review the result.
Questions about this workflow
What starts this workflow?
An HTTP request to the configured Notis webhook starts it.
Does this return schema for one table or the whole database?
This workflow uses the database schema overview action. For a single table's detailed definition, use the Get Table Schema action in a separate workflow.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Sheets to ClickHouse. A trigger fires from one place; an action lands in another.
Google Sheets 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.
Aggregate Metric Changed
Triggers when an aggregate metric (SUM/COUNT/AVG/MIN/MAX) changes in a Google Sheets spreadsheet. This trigger monitors an aggregate calculation on a target column (optionally filtered by a search column/value) and fires when the calculated result changes.
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.
Cell Range Values Changed
Triggers when values in a specified A1 range change in Google Sheets. This trigger monitors a specific cell or range of cells and fires when any values change.
List ClickHouse Databases
List all databases in the clickhouse instance. useful for discovering available databases before querying tables.
Conditional Format Rule Changed
Triggers when conditional formatting rules change in a Google Spreadsheet. Detects when rules are added, updated, or removed. Uses snapshot-based diffing to detect changes between polls.
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
Data Validation Rule Changed
Triggers when data validation rules change (added/updated/removed) in a Google Spreadsheet. Uses snapshot-based diffing to detect changes between polls.
Developer Metadata Changed
Triggers when developer metadata entries change (new/updated/removed) in a Google Spreadsheet. Uses snapshot-based diffing to detect changes between polls.
Filtered Range Values Changed
Polling trigger that monitors Google Sheets filtered ranges for value changes. Uses snapshot-based diffing to detect when values matching a data filter change. Emits the matched values when changes are detected.
Connect any two apps with Notis in the middle.
Google Sheets and ClickHouse, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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