Скачать или смотреть How to Use Laravel Query Builder for Grouping with Pluck Effectively

A step-by-step guide on leveraging Laravel's Query Builder to group data by `agent_id` and pluck currencies in one efficient query.
---
This video is based on the question https://stackoverflow.com/q/74821053/ asked by the user 'Wei Kang' ( https://stackoverflow.com/u/9107662/ ) and on the answer https://stackoverflow.com/a/74821278/ provided by the user 'Wei Kang' ( https://stackoverflow.com/u/9107662/ ) 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: Larvel Query Builder group By with pluck

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

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Unlocking the Power of Laravel Query Builder: Grouping and Plucking with Ease

When working with databases in Laravel, the Query Builder offers powerful tools for data manipulation. One common task that many developers encounter is the need to group records and extract specific fields efficiently. This guide will explore how to achieve this using grouping by agent_id and plucking related currencies from a dataset.

The Problem at Hand

Consider this dataset consisting of transactions associated with different agents and their respective currencies:

idagent_idcurrency1A0001IDR2A0002MYR3A0001THBThe Objective

From this table, we want to derive a structured output that groups the currencies by their associated agent_id. The desired outcome should look like:

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

Can It Be Done with a Single Query?

The good news is, yes, you can achieve this using Laravel's Query Builder in just one neat query!

The Solution: Grouping and Plucking

Here's how you can implement it effectively:

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

Breakdown of the Code:

Retrieve Data: First, we pull all records from our specific table using DB::table('your_table_name')->get().

Group by agent_id: The groupBy('agent_id') method organizes the retrieved records into groups based on the agent_id field.

Map Through Groups: The map() function allows us to transform each group of records into the desired format:

Extract the agent_id from the first record of each group with $rows[0]['agent_id'].

Use pluck('currency') to create an array of all currencies associated with that particular agent_id.

Conclusion

By leveraging Laravel's powerful Query Builder, we can efficiently group data and extract essential fields in just one query. This not only simplifies your code but enhances performance and readability.

So, the next time you face a similar challenge, remember that you can harness the combination of groupBy and pluck to streamline your data handling processes.

With this approach, working with grouped datasets in Laravel has never been easier! Happy coding!