Review database structure when spreadsheet metadata changes
Use a spreadsheet structure change as a cue to revisit the database schema relevant to your workflow.
Trigger
Spreadsheet Metadata Changed
Polling trigger that detects when a Google Spreadsheet's metadata changes. Uses snapshot-based diffing to detect any changes in spreadsheet properties, sheets, named ranges, developer metadata, data sources, etc.
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
Changes to spreadsheet properties, sheets, or named ranges can leave downstream data assumptions unclear.
- Retrieve a broad schema overview for the database you specify.
- Review data structure following spreadsheet metadata changes.
- Keep schema discovery and change review in one reported workflow.
Setup
Build it in a few focused steps.
- 1Connect Google Sheets and ClickHouse once in the Notis portal.
- 2Create an automation in Automations, New Automation, and give it a name.
- 3Describe in one instruction which ClickHouse database schema to retrieve and which changes matter in the report.
- 4Pick Spreadsheet Metadata Changed as the trigger and choose where run reports go.
- 5Test with one real metadata change and review the result.
Questions about this workflow
What metadata changes can start this?
The trigger monitors spreadsheet properties, sheets, named ranges, developer metadata, data sources, and other metadata for changes.
Does this change the ClickHouse schema?
No. The action retrieves a schema overview. Use the report to review structure; it does not apply schema changes.
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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