Today, We want to share with you Laravel Advance Database Query Builder.In this post we will show you Database: Query Builder – Laravel, hear for Advanced query using Eloquent we will give you demo and example for implement.In this post, we will learn about Laravel 5.6 Database: Query Builder with an example.
Laravel Advance Database Query Builder
There are the Following The simple About Laravel Advance Database Query Builder Full Information With Example and source code.
As I will cover this Post with live Working example to develop php – Laravel Delete Query Builder, so the laravel query builder for this example is following below.
Getting All Rows From A Table using Laravel 5.6
public function index() { $employees = DB::table('employees')->get(); return view('employee.index', ['employees' => $employees]); }
Getting A Single Row or Column From A Table
$employee = DB::table('employees')->where('name', 'Jaydeep')->first(); echo $employee->name;
or
$email = DB::table('employees')->where('name', 'Jaydeep')->value('email');
Getting A List Of Column Values using Laravel 5.6 pluck
$members = DB::table('roles')->pluck('title'); foreach ($members as $title) { echo $title; } $roles = DB::table('roles')->pluck('title', 'name'); foreach ($roles as $name => $title) { echo $title; }
Laravel 5.6 Aggregates
$employees = DB::table('employees')->count(); $rate = DB::table('memberships')->max('rate'); $rate = DB::table('memberships') ->where('finalized', 1) ->avg('rate');
Laravel 5.6 Determining If Records Exist
return DB::table('memberships')->where('finalized', 1)->exists(); return DB::table('memberships')->where('finalized', 1)->doesntExist();
Laravel 5.6 Specifying A Select Clause
$employees = DB::table('employees')->select('name', 'email as employee_email')->get(); $employees = DB::table('employees')->distinct()->get(); $query = DB::table('employees')->select('name'); $employees = $query->addSelect('age')->get();
Laravel 5.6 Raw Expressions
$employees = DB::table('employees') ->select(DB::raw('count(*) as employee_count, type_of_status')) ->where('type_of_status', '<>', 1) ->groupBy('type_of_status') ->get();
Laravel 5.6 selectRaw
$memberships = DB::table('memberships') ->selectRaw('rate * ? as rate_with_tax', [1.0825]) ->get();
Laravel 5.6 whereRaw / orWhereRaw
$memberships = DB::table('memberships') ->whereRaw('rate > IF(state = "TX", ?, 100)', [200]) ->get();
Laravel 5.6 havingRaw / orHavingRaw
$memberships = DB::table('memberships') ->select('department', DB::raw('SUM(rate) as total_sales')) ->groupBy('department') ->havingRaw('SUM(rate) > ?', [2500]) ->get();
Laravel 5.6 orderByRaw
$memberships = DB::table('memberships') ->orderByRaw('updated_at - created_at DESC') ->get();
Laravel 5.6 Inner Join Clause
$employees = DB::table('employees') ->join('contacts', 'employees.id', '=', 'contacts.employee_id') ->join('memberships', 'employees.id', '=', 'memberships.employee_id') ->select('employees.*', 'contacts.phone', 'memberships.rate') ->get();
Left Join Clause using Laravel 5.6
$employees = DB::table('employees') ->leftJoin('posts', 'employees.id', '=', 'posts.employee_id') ->get();Cross Join Clause
$employees = DB::table('sizes') ->crossJoin('colours') ->get();
Laravel 5.6 Advanced Join Clauses
DB::table('employees') ->join('contacts', function ($join) { $join->on('employees.id', '=', 'contacts.employee_id')->orOn(...); }) ->get(); DB::table('employees') ->join('contacts', function ($join) { $join->on('employees.id', '=', 'contacts.employee_id') ->where('contacts.employee_id', '>', 5); }) ->get();
Laravel 5.6 Sub-Query Joins
$latestPosts = DB::table('posts') ->select('employee_id', DB::raw('MAX(created_at) as last_post_created_at')) ->where('is_published', true) ->groupBy('employee_id'); $employees = DB::table('employees') ->joinSub($latestPosts, 'latest_posts', function($join) { $join->on('employees.id', '=', 'latest_posts.employee_id'); })->get();
Laravel 5.6 Unions
$first = DB::table('employees') ->whereNull('first_name'); $employees = DB::table('employees') ->whereNull('last_name') ->union($first) ->get();
Laravel 5.6 Where Clauses
$employees = DB::table('employees')->where('total_likes', '=', 100)->get(); $employees = DB::table('employees')->where('total_likes', 100)->get(); $employees = DB::table('employees') ->where('total_likes', '>=', 100) ->get(); $employees = DB::table('employees') ->where('total_likes', '<>', 100) ->get(); $employees = DB::table('employees') ->where('name', 'like', 'T%') ->get(); $employees = DB::table('employees')->where([ ['type_of_status', '=', '1'], ['subscribed', '<>', '1'], ])->get();
Laravel 5.6 Or Statements
$employees = DB::table('employees') ->where('total_likes', '>', 100) ->orWhere('name', 'Jaydeep') ->get();
Angular 6 CRUD Operations Application Tutorials
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