Laravel where Null and where Not Null example. In this tutorial, you will learn how to use whereNull() and whereNotNull() eloquent methods to implementing a query in laravel apps. As well as you will learn about whereNull and whereNotNull core SQL queries. The following syntax represents the whereNull and whereNotNull eloquent methods: whereNull
Mar 26, 2019 · EXPLAIN SELECT * FROM `tasks` WHERE `tasks`. `user_id` = 1 AND `tasks`. `user_id` IS NOT NULL Running this query will give us a bunch of information, but the important fields to look for are the possible_keys and key fields. These will tell us which indexes (keys) are available for this query and which index is actually used.
Laravel Version: 5.6.23 PHP Version: PHP 7.2.4 (cli) (built: Mar 28 2018 04:27:01) ( ZTS MSVC15 (Visual C++ 2017) x64 ) Database Driver & Version: MYSQL 5.7.21 Description: When you use unique validation rule with "where" clause and a"nu...
Feb 26, 2020 · Description. The is_null function is used to test whether a variable is NULL or not. Version: (PHP 4 and above) Syntax: is_null (var_name) Parameter:
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Laravel provides a convenient way to define a form in your views using Form::open() and Form::close(). This section deals with how to open a form, provide a route to which the form will be processed, and a class to style the form. In this case the style comes from twitter bootstrap. How to create in the view
Mar 12, 2020 · 📌 This article uses Laravel 6.0. In this article, you'll learn how to build a travel reservation manager from scratch using Laravel. We'll walk through every step of building the application and then add authentication using Auth0.