How to Calculate Average Gas Used per Day from Ethereum Transactions Using SQL

Learn how to effectively calculate the daily average gas used in Ethereum transactions over a date range using SQL queries with ease!
---
This video is based on the question https://stackoverflow.com/q/67479221/ asked by the user 'Adam' ( https://stackoverflow.com/u/10096713/ ) and on the answer https://stackoverflow.com/a/67479236/ provided by the user 'Gordon Linoff' ( https://stackoverflow.com/u/1144035/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How do I use SQL to return an average value for a day in a date range?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/licensing
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Introduction

If you're diving into the world of blockchain and cryptocurrency, working with SQL to analyze data from public blockchains like Ethereum can be quite powerful. A common challenge many encounter is how to retrieve average values over a specific timeframe. In this article, we will explore how to query Ethereum gas data to calculate the average gas consumed per transaction for each day over a set date range, specifically using the SQL language.

The Problem

You want to analyze the Ethereum blockchain for gas data, specifically looking to understand how much gas is consumed on average per transaction each day. While you may have a query to retrieve the gas used and transaction timestamps, the existing output isn't quite what you need. Your current SQL query returns multiple results for each day, which makes calculating an average tricky.

Here is what your initial query looks like:

[[See Video to Reveal this Text or Code Snippet]]

Running this returns numerous entries for the same day, leading to confusion about how to summarize the data into an average.

Solution Overview

To resolve this issue, you need to modify your query so that it not only retrieves the data but also groups it by the date, allowing you to get an average of the receipt_gas_used for each day. We will use the AVG() function along with GROUP BY to consolidate the results.

Step-by-Step SQL Query Explanation

1. Select the Date and Average

The SELECT statement needs to specify the date and the average gas used per transaction. You can do that by using the AVG() function to calculate the average of receipt_gas_used over each day.

2. Modify the Query

Here's how you can structure your SQL query for your needs:

[[See Video to Reveal this Text or Code Snippet]]

3. Breakdown of the Query

DATE(block_timestamp) as date: This converts the timestamp into a date format and gives it an alias (date) for clarity.

AVG(receipt_gas_used): This portion calculates the average gas used for each transaction on that date.

FROM ... WHERE ...: This part specifies the source of the data and sets your date range.

GROUP BY date: By grouping results by date, you ensure that each day's transactions are aggregated correctly.

ORDER BY date: Finally, this sorts the output in chronological order, making it easy to read.

Conclusion

Using SQL to analyze Ethereum transaction data can provide valuable insights into gas consumption trends. By employing the AVG() function along with proper grouping, you can effectively get a clear average gas usage metric per day. This method can pave the way for more complex queries and deeper insights into blockchain activity.

With this handy SQL query at your disposal, you'll be well-equipped to analyze daily gas consumption in the ever-evolving world of cryptocurrencies! Feel free to adapt and expand on this query for any additional insights you might be interested in.

Видео How to Calculate Average Gas Used per Day from Ethereum Transactions Using SQL канала vlogize