Скачать или смотреть How to Combine insertUsing and insertOrIgnore in Laravel 5.7

Discover how to effectively insert data based on existing records and ignore duplicates in Laravel 5.7 using a combination of `insertUsing` and `insertOrIgnore`.
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This video is based on the question https://stackoverflow.com/q/63427600/ asked by the user 'Bob Tymczasowy' ( https://stackoverflow.com/u/13007189/ ) and on the answer https://stackoverflow.com/a/64917852/ provided by the user 'Bob Tymczasowy' ( https://stackoverflow.com/u/13007189/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Mastering Data Insertion in Laravel 5.7

When working with databases, handling duplicates during insertion is a common challenge developers face. In Laravel, the DB facade provides powerful methods to tackle this issue effectively. If you have ever wondered how to combine data insertion based on existing records with an option to ignore duplicates, this guide is tailored for you! We will explore the problem posed and offer clear, actionable steps to achieve this seamlessly using Laravel 5.7.

Understanding the Core Methods

In Laravel, two crucial methods can assist with data insertion:

insertOrIgnore(): This method prevents duplicate entries when trying to insert data into a table. It’s a great way to ensure data integrity without causing database errors due to unique constraints.

insertUsing(): This method allows you to insert data by selecting from another table. It’s particularly useful when you need to create records based on existing data.

The Challenge

Our goal is to create new records in an antiques table based on existing records in a cars table, but only for cars that were produced before 1990. Furthermore, we want to ensure that we ignore any cars that already exist in the antiques table. As it stands, Laravel does not provide a straightforward method to achieve this by directly combining insertUsing with an ignore option. However, a workaround gives us the desired results.

Step-by-Step Solution

Here’s how to implement the solution using Laravel 5.7:

Step 1: Define Your Models

Assuming you have two models, Car and Antique, set up like so:

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

Step 2: Build Your Query

Now, let’s create a query that selects all cars produced before 1990 and prepares to insert them into the antiques table. We will also specify a fixed category of "car."

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

Step 3: Craft the Insert Statement

Next, we need to craft a raw SQL insert statement that incorporates the results from our select query and uses IGNORE to ignore any duplicates:

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

Step 4: Execute the Query

Finally, we will execute the insertion by leveraging the DB::insert method.

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

Resulting SQL

This results in an SQL query similar to:

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

Conclusion

By combining insertUsing with a crafted SQL query that employs the IGNORE clause, we can efficiently insert records based on existing data in Laravel while avoiding duplicates. This method promotes data integrity and allows for flexibility when working with evolving datasets.

Embrace these powerful techniques in your Laravel applications, and streamline your data management processes like never before!

Remember, while Laravel provides many built-in features, sometimes a little ingenuity is required to tailor the framework to meet your needs effectively.