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max_value

Call or Deploy max_value ?

✅ You can call this max_value bigfunction directly from your Google Cloud Project (no install required).

  • This max_value function is deployed in bigfunctions GCP project in 39 datasets for all of the 39 BigQuery regions. You need to use the dataset in the same region as your datasets (otherwise you may have a function not found error).
  • Function is public, so it can be called by anyone. Just copy / paste examples below in your BigQuery console. It just works!
  • You may prefer to deploy the BigFunction in your own project if you want to build and manage your own catalog of functions. This is particularly useful if you want to create private functions (for example calling your internal APIs). Discover the framework

Public BigFunctions Datasets:

Region Dataset
eu bigfunctions.eu
us bigfunctions.us
europe-west1 bigfunctions.europe_west1
asia-east1 bigfunctions.asia_east1
... ...

Description

Signature

max_value(arr)

Description

Return max value of array (inspired from sql-snippets repo)

Examples

select bigfunctions.eu.max_value([1, 4, 3])
select bigfunctions.us.max_value([1, 4, 3])
select bigfunctions.europe_west1.max_value([1, 4, 3])
+-------+
| value |
+-------+
| 4     |
+-------+

Need help using max_value?

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For professional suppport, don't hesitate to chat with us.

Found a bug using max_value?

If the function does not work as expected, please

  • report a bug so that it can be improved.
  • or open the discussion with the community on Slack.

For professional suppport, don't hesitate to chat with us.

Use cases

You have a table of products, and each product has a list of prices at different stores. You want to find the highest price for each product.

WITH Products AS (
    SELECT
        'Product A' AS product_name,
        [10.99, 12.50, 11.75] AS prices
    UNION ALL SELECT
        'Product B' AS product_name,
        [5.00, 5.50, 4.99] AS prices
    UNION ALL SELECT
        'Product C' AS product_name,
        [20.00, 19.50, 21.25] AS prices
)
SELECT
    product_name,
    bigfunctions.us.max_value(prices) AS max_price
FROM Products;

This query uses the max_value function to find the highest price within the prices array for each product. The result will be:

+-------------+-----------+
| product_name | max_price |
+-------------+-----------+
| Product A    | 12.5      |
| Product B    | 5.5       |
| Product C    | 21.25     |
+-------------+-----------+

This shows how max_value can be practically used to extract the maximum value from an array of numbers within a larger dataset. This could be useful for things like pricing analysis, finding peak values in time series data (if stored as arrays), or determining the maximum score in a game played multiple times.

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