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find_value

Call or Deploy find_value ?

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

  • This find_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

find_value(arr, value)

Description

Return the first offset (zero-based index) of value in array arr (or null if value is not in arr).

Examples

1. When value is in array

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

2. When value is not in array

select bigfunctions.eu.find_value([3, 4], 7)
select bigfunctions.us.find_value([3, 4], 7)
select bigfunctions.europe_west1.find_value([3, 4], 7)
+--------+
| offset |
+--------+
| null   |
+--------+

Need help using find_value?

The community can help! Engage the conversation on Slack

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

Found a bug using find_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 customer orders, and each order has an array of product IDs. You want to find the position of a specific product ID within each order's product array.

Table Schema:

CREATE OR REPLACE TABLE `your_project.your_dataset.orders` (
  order_id INT64,
  product_ids ARRAY<INT64>
);

INSERT INTO `your_project.your_dataset.orders` (order_id, product_ids) VALUES
(1, [101, 102, 103, 104]),
(2, [102, 105, 106]),
(3, [101, 103, 107, 102]);

Use Case: Finding the position of product ID 102:

SELECT
    order_id,
    bigfunctions.your_region.find_value(product_ids, 102) AS product_102_position
  FROM
    `your_project.your_dataset.orders`;

Result:

+---------+----------------------+
| order_id | product_102_position |
+---------+----------------------+
|       1 |                    1 |
|       2 |                    0 |
|       3 |                    3 |
+---------+----------------------+

Explanation:

  • The find_value function searches the product_ids array for the value 102.
  • It returns the zero-based index (position) of the first occurrence of 102.
  • For order_id = 1, 102 is at index 1.
  • For order_id = 2, 102 is at index 0.
  • For order_id = 3, 102 is at index 3.

Other Potential Use Cases:

  • Inventory Management: Find the location of a specific item within a warehouse represented as an array.
  • Log Analysis: Find the first occurrence of a specific error code within a log entry containing an array of codes.
  • User Behavior Analysis: Determine the position of a specific action within a user's sequence of actions on a website.

Remember to replace your_project, your_dataset, and your_region with your actual values. For example, if your dataset is in the us-central1 region, you would use bigfunctions.us_central1.

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