Inspect a ClickHouse table before you query
Start with the table facts that prevent avoidable SQL mistakes.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
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.
Why this helps
Wrong column names and assumptions create failed queries and rework.
- Reduce failed queries
- Understand keys and types
- Prepare better analysis prompts
Setup
Build it in a few focused steps.
- 1Connect 0CodeKit and ClickHouse in Notis.
- 2Create an automation named Table schema check.
- 3Tell Notis to retrieve the requested table schema and summarize usable fields.
- 4Choose a webhook trigger and report channel.
- 5Test with one production table.
Questions about this workflow
Can it return sample data?
Yes, ask for sample data when the ClickHouse action supports it for that table.
Can this replace a query?
It prepares context; use the query action when you need result rows.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link 0CodeKit to ClickHouse. A trigger fires from one place; an action lands in another.
0CodeKit 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.
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.
List ClickHouse Databases
List all databases in the clickhouse instance. useful for discovering available databases before querying tables.
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
Connect any two apps with Notis in the middle.
0CodeKit and ClickHouse, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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