> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.
# Run a basic query
> Learn how to write and execute SQL queries across all blockchains in the Allium App.
Write SQL queries spanning **all blockchains offered by Allium**. Query raw blockchain data for full flexibility, or leverage abstracted data models to quickly access the data you need (e.g., `crosschain.dex.trades` and `crosschain.stablecoin.transfers`).
Navigate to [app.allium.so/analyze/queries](https://app.allium.so/analyze/queries) and click **New**.
Enter your SQL query in the editor. Here's an example that fetches DEX USD volume for Ethereum, Base, and Solana over the last 10 days:
```sql theme={null}
-- DEX USD volume for Ethereum, Base, and Solana for the last 10 days
select
date(block_timestamp) as date,
chain,
sum(usd_amount) as usd_volume
from crosschain.dex.trades
where
block_timestamp >= current_timestamp - interval '10 days'
and chain in ('ethereum', 'base', 'solana')
group by all
order by date asc;
```
Click **Run** to execute the query. Results appear in table format:
Switch to chart view and group by chain to visualize the data:
Learn more about charting options in the [Visualize Results](/app/visualisations) guide.
## Next Steps
Create reusable queries with configurable parameters
Build on top of completed query runs
Execute queries programmatically via REST endpoints
Create charts and visualizations from query results