Posts (page 15)
-
6 min readTo combine and count two columns in Oracle, you can use the CONCAT function to combine the values from the two columns into a single column. You can also use the COUNT function to count the number of rows that meet certain criteria, such as having the same values in both columns. By using a combination of these functions, you can effectively combine and count the values from two columns in Oracle.
-
3 min readTo check if data exists in Laravel, you can use the exists method on a model query builder. This method returns a boolean value indicating whether any records match the query criteria.For example, you can check if a user with a specific email address exists in the users table like this: $email = 'example@example.
-
4 min readIn Oracle, you can split a value using the SUBSTR function. This function allows you to extract a portion of a string based on a specified starting position and length. For example, if you have a string 'HelloWorld' and you want to extract the first 5 characters, you would use the SUBSTR function like this:SELECT SUBSTR('HelloWorld', 1, 5) FROM dual;This SQL query would return 'Hello', which is the first 5 characters of the original string.
-
4 min readTo show custom login validation in Laravel, you can create a custom validation rule by extending the Validator facade and adding the custom rule in the boot() method of the AppServiceProvider class. You can then use this custom rule in your login validation logic in the controller by adding it to the validation rules array. If the validation fails, you can display the custom error message to the user.
-
5 min readTo extend Laravel query builder, you can create a custom query builder extension by creating a new class that extends the base query builder class provided by Laravel. This custom query builder class can contain additional custom methods that you want to add to the query builder.You can then use this custom query builder in your application by using it as a replacement for the default query builder provided by Laravel.
-
4 min readTo call a scheduler in Oracle from Java, you can use the OracleScheduler class from the oracle.jdbc.driver package. First, you need to establish a connection to the database using the DriverManager class and the appropriate JDBC URL, username, and password. Then, you can create an instance of the OracleScheduler class and use its methods to interact with the scheduler. This includes creating, modifying, and deleting jobs, job classes, and schedules.
-
7 min readWhen using Laravel Models, it is important to understand their purpose and how to properly utilize them in your application. Models in Laravel represent the data in your database and define the relationship between data.To properly use Laravel Models, you should first create a model file using the artisan command php artisan make:model ModelName. This will generate a new model file in the app/Models directory.
-
4 min readTo remove non-numeric values from a SELECT query in Oracle, you can use regular expressions in combination with the REGEXP_LIKE function. By specifying a regular expression pattern that matches only numeric values, you can filter out any non-numeric characters from the results of your query.
-
8 min readSchema in Oracle is defined as a logical collection of database objects such as tables, views, indexes, sequences, stored procedures, and other user-defined objects. It is created and owned by a specific user, and all objects within the schema are associated with that user. The schema provides a way to organize and manage database objects, as well as control access permissions and security settings for those objects.
-
5 min readTo implement a simple CRUD search in Laravel, you can start by creating a search form in your view file where users can input their search queries. The form should send a GET request to a search route in your application.Next, create a new route in your web.php file that points to a controller method where the search logic will be implemented.
-
5 min readIn Laravel, you can use the groupBy method to group records based on a specific column, such as created_at.To group by created_at in Laravel, you can use the following code snippet: $data = Model::all()->groupBy(function($date) { return \Carbon\Carbon::parse($date->created_at)->format('Y-m-d'); }); This code snippet will group the records based on their created_at date. You can then loop through the grouped data to access the records for each specific date.
-
6 min readTo export a PDF file in Laravel, you can use the barryvdh/laravel-dompdf package.First, you need to install the package by running the following command in your terminal:composer require barryvdh/laravel-dompdfNext, publish the package's config file by running the following command:php artisan vendor:publish --provider="Barryvdh\DomPDF\ServiceProvider"After that, you can create a new route in your web.