laravel eloquent raw query

1. How write raw SQL query in laravel?
2. What is DB :: Raw in laravel?
3. How use raw MySQL query in laravel?
4. How do I get the query builder to output its raw SQL query as a string?
5. How do I write a query in laravel?
6. How use normal SQL query in laravel?
7. Is null in laravel?
8. What is use DB in laravel?
9. What is pluck laravel?
10. How do I join a query in laravel?
11. What is raw query?
12. How do I print a query in laravel controller?

How write raw SQL query in laravel?

$someVariable = Input::get("some_variable"); $results = DB::select( DB::raw("SELECT * FROM some_table WHERE some_col = '$someVariable'") ); In the above query, we're directly adding user input into the query without sanitizing it. This leaves us open to attack!

What is DB :: Raw in laravel?

DB::raw() is used to make arbitrary SQL commands which aren't parsed any further by the query builder. They therefore can create a vector for attack via SQL injection. Check this ref. link, with more details: http://fideloper.com/laravel-raw-queries.

How use raw MySQL query in laravel?

You need to launch a MySQL function like COUNT() – so you can use a DB::raw() for it. Here's an example from official Laravel documentation: $users = DB::table('users') ->select(DB::raw('count(*) as user_count, status')) ->where('status', '<>', 1) ->groupBy('status') ->get();

How do I get the query builder to output its raw SQL query as a string?

Simply you can do following stuff using toSql() method, $query = DB::table('users')->get(); echo $query->toSql();

How do I write a query in laravel?

Running Queries

1. Running A Select Query. $results = DB::select('select * from users where id = ? ...
2. Running An Insert Statement. DB::insert('insert into users (id, name) values (?, ?)', [1, 'Dayle']);
3. Running An Update Statement. ...
4. Running A Delete Statement. ...
5. Running A General Statement.

How use normal SQL query in laravel?

Most Typical: selectRaw() with Avg/Sum/Count Calculations

Example from Laravel documentation: $users = DB::table('users') ->selectRaw('count(*) as user_count, status') ->where('status', '<>', 1) ->groupBy('status') ->get();

Is null in laravel?

Laravel Eloquent provides a handy method called whereNull , which you could use to verify if a specific value of a given column is NULL.

What is use DB in laravel?

Laravel makes interacting with databases extremely simple across a variety of supported databases using raw SQL, a fluent query builder, and the Eloquent ORM. Currently, Laravel provides first-party support for four databases: MySQL 5.7+ (Version Policy) PostgreSQL 9.6+ (Version Policy) SQLite 3.8.

What is pluck laravel?

Laravel Pluck method is part of the Laravel Collections. The pluck helper method is used to retrieve a list of specific values from a given $array. It is most useful when used against arrays of objects, but will also work with arrays just as well.

How do I join a query in laravel?

Understanding Join Queries in Laravel By Example

1. First, we target the user based on the user id, just like in the first query of the original code block.
2. Next, we join our result with the role table, grabbing the role which is equal to this user's role. ...
3. Finally, we decide what to retrieve.

What is raw query?

Marks a method in a Dao annotated class as a raw query method where you can pass the query as a SupportSQLiteQuery . ... On the other hand, RawQuery serves as an escape hatch where you can build your own SQL query at runtime but still use Room to convert it into objects. RawQuery methods must return a non-void type.

How do I print a query in laravel controller?

The simplest method to see the query generated is by utilizing a ->toSql() method. All that we need to do is replace the closing ->get() with ->toSql() . Then printing out the results with the dd() , die and dump, helper.