Laravel 5 | How to create Queue and Run Jobs using worker in Laravel | How to execute a job immediately using Laravel Queue | Job Listener Laravel | Schedule And Execute Job Laravel

At first need to create an Job class inside "project/app/jobs" directory. Laravel 5 | How to create Queue and Run Jobs using worker in Laravel | How to execute a job immediately using Laravel Queue | Job Listener Laravel | Schedule And Execute Job Laravel.

Sample job class:

<?php
namespace App\Jobs;

use Log;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Mail\Mailer;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;

class MyTestJob implements ShouldQueue
{
    use InteractsWithQueue, SerializesModels, Queueable;

    private $param1;
    private $param2;

    public function __construct($param1, $param2)
    {
        $this->param1 = $param1;
        $this->param2 = $param2;
    }

    public function handle(Mailer $mailer)
    {
        /* After 3 Times Failed, Job Will Be Released From Queue */
        if ($this->attempts() > 3) {
            Log::info("Max try failed");
            return;
        }
        $to_email = "pritomkucse@gmail.com";
        $mailer->send('emails.some_file_name',
            [
                'param1' => "Param1 value",
                'param2' => "Param2 value"
            ],
            function ($message) use ($to_email) {
                $message->from('from@address.domain', 'From Text');
                $message->subject("Test Subject");
                $message->to($to_email);
            });
    }
}

Below line is to schedule job with 30 seconds delay:

app("Illuminate\\Contracts\\Bus\\Dispatcher")->dispatch((new MyTestJob("1", "2"))->delay(30)); 

And this is time to start queue for job listen. Open command prompt and navigate to "laravel_project"/"project" and execute following command:

php artisan queue:listen --timeout=120

And every time a new job scheduled, this command will execute them on time. 

Laravel 5: Logging All DB Query | Log Queries | Listen Query Events | Query Logging | Sql Logging | Log SQL | DB Connection Class | Laravel Database Connection | Laravel DB Connection Query Run Method

Laravel 5: Logging All DB Query | Log Queries | Listen Query Events | Query Logging | Sql Logging | Log SQL | DB Connection Class | Laravel Database Connection | Laravel DB Connection Query Run Method.

Logging query in Laravel is easy. You can then register event listener for DB. At first you need to create an service provider in directory ("project/app/Providers" ) named QueryLogProvider with following contents:

<?php
namespace App\Providers;

use Monolog\Logger;
use Illuminate\Support\Facades\DB;
use Monolog\Handler\StreamHandler;
use Illuminate\Support\ServiceProvider;

class QueryLogProvider extends ServiceProvider
{
    public function register()
    {
        DB::listen(function ($query) {
            $logFile = storage_path('logs/query-log-'.date("Y-m-d").'.log');
            $stream = new Logger('log');
            $stream->pushHandler(new StreamHandler($logFile));
            $bindings = $query->bindings;
            $time = $query->time;
            $stream->info($query->sql, compact('bindings', 'time'));
        });
    }
}

You are done with creating provider. Now you have to register in file "project/config/app.php" in section 

'providers' => [
    .....,
    App\Providers\QueryLogProvider::class
],

All your queries will be stored on the location "project/storage/logs" with prefix file name "query-log".

But you can do some wired things, editing source code. To do so first need to open your connection class:

Illuminate\Database\Connection

and navigate to function:

protected function run($query, $bindings, Closure $callback)

actually all query in Laravel passed through this method.

So you can do whatever you wish to do here.

Laravel join or left join queries AS different name

There are many situations where you need to join same table, but must have different names (you can define this as alias). Below is a simple code snippet to show how you can join same table with different name.

$limit = 10;
$page = 1;
$groups = DB::table('person')
       ->leftJoin('users as for_user', function ($join) {
           $join->on('for_user.id', '=', 'person.for_id')->where("for_user.id", "=", 10);
       })
       ->join('users as by_user', function ($join) {
           $join->on('by_user.id', '=', 'person.by_id');
       })
       ->where('person.status', '=', 1)
       ->select('person.id', 'person.first_name', 'by_user.first_name')
       ->limit($limit)->offset($page * $limit)
       ->get();

How to output MySQL query results in csv format

From http://www.tech-recipes.com/rx/1475/save-mysql-query-results-into-a-text-or-csv-file/

SELECT order_id,product_name,qty
FROM orders
INTO OUTFILE '/tmp/orders.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'

all country list sql query

--
-- Table structure for table `countries`
--

CREATE TABLE `countries` (
  `ccode` varchar(2) NOT NULL default '',
  `country` varchar(200) NOT NULL default '',
  PRIMARY KEY  (`ccode`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

--
-- Dumping data for table `countries`
--

INSERT INTO `countries` VALUES ('AF', 'Afghanistan');
INSERT INTO `countries` VALUES ('AX', 'Åland Islands');
INSERT INTO `countries` VALUES ('AL', 'Albania');
INSERT INTO `countries` VALUES ('DZ', 'Algeria');
INSERT INTO `countries` VALUES ('AS', 'American Samoa');
INSERT INTO `countries` VALUES ('AD', 'Andorra');
INSERT INTO `countries` VALUES ('AO', 'Angola');
INSERT INTO `countries` VALUES ('AI', 'Anguilla');
INSERT INTO `countries` VALUES ('AQ', 'Antarctica');
INSERT INTO `countries` VALUES ('AG', 'Antigua and Barbuda');
INSERT INTO `countries` VALUES ('AR', 'Argentina');
INSERT INTO `countries` VALUES ('AM', 'Armenia');
INSERT INTO `countries` VALUES ('AW', 'Aruba');
INSERT INTO `countries` VALUES ('AU', 'Australia');
INSERT INTO `countries` VALUES ('AT', 'Austria');
INSERT INTO `countries` VALUES ('AZ', 'Azerbaijan');
INSERT INTO `countries` VALUES ('BS', 'Bahamas');
INSERT INTO `countries` VALUES ('BH', 'Bahrain');
INSERT INTO `countries` VALUES ('BD', 'Bangladesh');
INSERT INTO `countries` VALUES ('BB', 'Barbados');
INSERT INTO `countries` VALUES ('BY', 'Belarus');
INSERT INTO `countries` VALUES ('BE', 'Belgium');
INSERT INTO `countries` VALUES ('BZ', 'Belize');
INSERT INTO `countries` VALUES ('BJ', 'Benin');
INSERT INTO `countries` VALUES ('BM', 'Bermuda');
INSERT INTO `countries` VALUES ('BT', 'Bhutan');
INSERT INTO `countries` VALUES ('BO', 'Bolivia');
INSERT INTO `countries` VALUES ('BA', 'Bosnia and Herzegovina');
INSERT INTO `countries` VALUES ('BW', 'Botswana');
INSERT INTO `countries` VALUES ('BV', 'Bouvet Island');
INSERT INTO `countries` VALUES ('BR', 'Brazil');
INSERT INTO `countries` VALUES ('IO', 'British Indian Ocean Territory');
INSERT INTO `countries` VALUES ('BN', 'Brunei Darussalam');
INSERT INTO `countries` VALUES ('BG', 'Bulgaria');
INSERT INTO `countries` VALUES ('BF', 'Burkina Faso');
INSERT INTO `countries` VALUES ('BI', 'Burundi');
INSERT INTO `countries` VALUES ('KH', 'Cambodia');
INSERT INTO `countries` VALUES ('CM', 'Cameroon');
INSERT INTO `countries` VALUES ('CA', 'Canada');
INSERT INTO `countries` VALUES ('CV', 'Cape Verde');
INSERT INTO `countries` VALUES ('KY', 'Cayman Islands');
INSERT INTO `countries` VALUES ('CF', 'Central African Republic');
INSERT INTO `countries` VALUES ('TD', 'Chad');
INSERT INTO `countries` VALUES ('CL', 'Chile');
INSERT INTO `countries` VALUES ('CN', 'China');
INSERT INTO `countries` VALUES ('CX', 'Christmas Island');
INSERT INTO `countries` VALUES ('CC', 'Cocos (Keeling) Islands');
INSERT INTO `countries` VALUES ('CO', 'Colombia');
INSERT INTO `countries` VALUES ('KM', 'Comoros');
INSERT INTO `countries` VALUES ('CG', 'Congo');
INSERT INTO `countries` VALUES ('CD', 'Congo, The Democratic Republic of the');
INSERT INTO `countries` VALUES ('CK', 'Cook Islands');
INSERT INTO `countries` VALUES ('CR', 'Costa Rica');
INSERT INTO `countries` VALUES ('CI', 'Côte D\'Ivoire');
INSERT INTO `countries` VALUES ('HR', 'Croatia');
INSERT INTO `countries` VALUES ('CU', 'Cuba');
INSERT INTO `countries` VALUES ('CY', 'Cyprus');
INSERT INTO `countries` VALUES ('CZ', 'Czech Republic');
INSERT INTO `countries` VALUES ('DK', 'Denmark');
INSERT INTO `countries` VALUES ('DJ', 'Djibouti');
INSERT INTO `countries` VALUES ('DM', 'Dominica');
INSERT INTO `countries` VALUES ('DO', 'Dominican Republic');
INSERT INTO `countries` VALUES ('EC', 'Ecuador');
INSERT INTO `countries` VALUES ('EG', 'Egypt');
INSERT INTO `countries` VALUES ('SV', 'El Salvador');
INSERT INTO `countries` VALUES ('GQ', 'Equatorial Guinea');
INSERT INTO `countries` VALUES ('ER', 'Eritrea');
INSERT INTO `countries` VALUES ('EE', 'Estonia');
INSERT INTO `countries` VALUES ('ET', 'Ethiopia');
INSERT INTO `countries` VALUES ('FK', 'Falkland Islands (Malvinas)');
INSERT INTO `countries` VALUES ('FO', 'Faroe Islands');
INSERT INTO `countries` VALUES ('FJ', 'Fiji');
INSERT INTO `countries` VALUES ('FI', 'Finland');
INSERT INTO `countries` VALUES ('FR', 'France');
INSERT INTO `countries` VALUES ('GF', 'French Guiana');
INSERT INTO `countries` VALUES ('PF', 'French Polynesia');
INSERT INTO `countries` VALUES ('TF', 'French Southern Territories');
INSERT INTO `countries` VALUES ('GA', 'Gabon');
INSERT INTO `countries` VALUES ('GM', 'Gambia');
INSERT INTO `countries` VALUES ('GE', 'Georgia');
INSERT INTO `countries` VALUES ('DE', 'Germany');
INSERT INTO `countries` VALUES ('GH', 'Ghana');
INSERT INTO `countries` VALUES ('GI', 'Gibraltar');
INSERT INTO `countries` VALUES ('GR', 'Greece');
INSERT INTO `countries` VALUES ('GL', 'Greenland');
INSERT INTO `countries` VALUES ('GD', 'Grenada');
INSERT INTO `countries` VALUES ('GP', 'Guadeloupe');
INSERT INTO `countries` VALUES ('GU', 'Guam');
INSERT INTO `countries` VALUES ('GT', 'Guatemala');
INSERT INTO `countries` VALUES ('GG', 'Guernsey');
INSERT INTO `countries` VALUES ('GN', 'Guinea');
INSERT INTO `countries` VALUES ('GW', 'Guinea-Bissau');
INSERT INTO `countries` VALUES ('GY', 'Guyana');
INSERT INTO `countries` VALUES ('HT', 'Haiti');
INSERT INTO `countries` VALUES ('HM', 'Heard Island and McDonald Islands');
INSERT INTO `countries` VALUES ('VA', 'Holy See (Vatican City State)');
INSERT INTO `countries` VALUES ('HN', 'Honduras');
INSERT INTO `countries` VALUES ('HK', 'Hong Kong');
INSERT INTO `countries` VALUES ('HU', 'Hungary');
INSERT INTO `countries` VALUES ('IS', 'Iceland');
INSERT INTO `countries` VALUES ('IN', 'India');
INSERT INTO `countries` VALUES ('ID', 'Indonesia');
INSERT INTO `countries` VALUES ('IR', 'Iran, Islamic Republic of');
INSERT INTO `countries` VALUES ('IQ', 'Iraq');
INSERT INTO `countries` VALUES ('IE', 'Ireland');
INSERT INTO `countries` VALUES ('IM', 'Isle of Man');
INSERT INTO `countries` VALUES ('IL', 'Israel');
INSERT INTO `countries` VALUES ('IT', 'Italy');
INSERT INTO `countries` VALUES ('JM', 'Jamaica');
INSERT INTO `countries` VALUES ('JP', 'Japan');
INSERT INTO `countries` VALUES ('JE', 'Jersey');
INSERT INTO `countries` VALUES ('JO', 'Jordan');
INSERT INTO `countries` VALUES ('KZ', 'Kazakhstan');
INSERT INTO `countries` VALUES ('KE', 'Kenya');
INSERT INTO `countries` VALUES ('KI', 'Kiribati');
INSERT INTO `countries` VALUES ('KP', 'Korea, Democratic People\'s Republic of');
INSERT INTO `countries` VALUES ('KR', 'Korea, Republic of');
INSERT INTO `countries` VALUES ('KW', 'Kuwait');
INSERT INTO `countries` VALUES ('KG', 'Kyrgyzstan');
INSERT INTO `countries` VALUES ('LA', 'Lao People\'s Democratic Republic');
INSERT INTO `countries` VALUES ('LV', 'Latvia');
INSERT INTO `countries` VALUES ('LB', 'Lebanon');
INSERT INTO `countries` VALUES ('LS', 'Lesotho');
INSERT INTO `countries` VALUES ('LR', 'Liberia');
INSERT INTO `countries` VALUES ('LY', 'Libyan Arab Jamahiriya');
INSERT INTO `countries` VALUES ('LI', 'Liechtenstein');
INSERT INTO `countries` VALUES ('LT', 'Lithuania');
INSERT INTO `countries` VALUES ('LU', 'Luxembourg');
INSERT INTO `countries` VALUES ('MO', 'Macao');
INSERT INTO `countries` VALUES ('MK', 'Macedonia, The Former Yugoslav Republic of');
INSERT INTO `countries` VALUES ('MG', 'Madagascar');
INSERT INTO `countries` VALUES ('MW', 'Malawi');
INSERT INTO `countries` VALUES ('MY', 'Malaysia');
INSERT INTO `countries` VALUES ('MV', 'Maldives');
INSERT INTO `countries` VALUES ('ML', 'Mali');
INSERT INTO `countries` VALUES ('MT', 'Malta');
INSERT INTO `countries` VALUES ('MH', 'Marshall Islands');
INSERT INTO `countries` VALUES ('MQ', 'Martinique');
INSERT INTO `countries` VALUES ('MR', 'Mauritania');
INSERT INTO `countries` VALUES ('MU', 'Mauritius');
INSERT INTO `countries` VALUES ('YT', 'Mayotte');
INSERT INTO `countries` VALUES ('MX', 'Mexico');
INSERT INTO `countries` VALUES ('FM', 'Micronesia, Federated States of');
INSERT INTO `countries` VALUES ('MD', 'Moldova, Republic of');
INSERT INTO `countries` VALUES ('MC', 'Monaco');
INSERT INTO `countries` VALUES ('MN', 'Mongolia');
INSERT INTO `countries` VALUES ('ME', 'Montenegro');
INSERT INTO `countries` VALUES ('MS', 'Montserrat');
INSERT INTO `countries` VALUES ('MA', 'Morocco');
INSERT INTO `countries` VALUES ('MZ', 'Mozambique');
INSERT INTO `countries` VALUES ('MM', 'Myanmar');
INSERT INTO `countries` VALUES ('NA', 'Namibia');
INSERT INTO `countries` VALUES ('NR', 'Nauru');
INSERT INTO `countries` VALUES ('NP', 'Nepal');
INSERT INTO `countries` VALUES ('NL', 'Netherlands');
INSERT INTO `countries` VALUES ('AN', 'Netherlands Antilles');
INSERT INTO `countries` VALUES ('NC', 'New Caledonia');
INSERT INTO `countries` VALUES ('NZ', 'New Zealand');
INSERT INTO `countries` VALUES ('NI', 'Nicaragua');
INSERT INTO `countries` VALUES ('NE', 'Niger');
INSERT INTO `countries` VALUES ('NG', 'Nigeria');
INSERT INTO `countries` VALUES ('NU', 'Niue');
INSERT INTO `countries` VALUES ('NF', 'Norfolk Island');
INSERT INTO `countries` VALUES ('MP', 'Northern Mariana Islands');
INSERT INTO `countries` VALUES ('NO', 'Norway');
INSERT INTO `countries` VALUES ('OM', 'Oman');
INSERT INTO `countries` VALUES ('PK', 'Pakistan');
INSERT INTO `countries` VALUES ('PW', 'Palau');
INSERT INTO `countries` VALUES ('PS', 'Palestinian Territory, Occupied');
INSERT INTO `countries` VALUES ('PA', 'Panama');
INSERT INTO `countries` VALUES ('PG', 'Papua New Guinea');
INSERT INTO `countries` VALUES ('PY', 'Paraguay');
INSERT INTO `countries` VALUES ('PE', 'Peru');
INSERT INTO `countries` VALUES ('PH', 'Philippines');
INSERT INTO `countries` VALUES ('PN', 'Pitcairn');
INSERT INTO `countries` VALUES ('PL', 'Poland');
INSERT INTO `countries` VALUES ('PT', 'Portugal');
INSERT INTO `countries` VALUES ('PR', 'Puerto Rico');
INSERT INTO `countries` VALUES ('QA', 'Qatar');
INSERT INTO `countries` VALUES ('RE', 'Reunion');
INSERT INTO `countries` VALUES ('RO', 'Romania');
INSERT INTO `countries` VALUES ('RU', 'Russian Federation');
INSERT INTO `countries` VALUES ('RW', 'Rwanda');
INSERT INTO `countries` VALUES ('BL', 'Saint Barthélemy');
INSERT INTO `countries` VALUES ('SH', 'Saint Helena');
INSERT INTO `countries` VALUES ('KN', 'Saint Kitts and Nevis');
INSERT INTO `countries` VALUES ('LC', 'Saint Lucia');
INSERT INTO `countries` VALUES ('MF', 'Saint Martin');
INSERT INTO `countries` VALUES ('PM', 'Saint Pierre and Miquelon');
INSERT INTO `countries` VALUES ('VC', 'Saint Vincent and the Grenadines');
INSERT INTO `countries` VALUES ('WS', 'Samoa');
INSERT INTO `countries` VALUES ('SM', 'San Marino');
INSERT INTO `countries` VALUES ('ST', 'Sao Tome and Principe');
INSERT INTO `countries` VALUES ('SA', 'Saudi Arabia');
INSERT INTO `countries` VALUES ('SN', 'Senegal');
INSERT INTO `countries` VALUES ('RS', 'Serbia');
INSERT INTO `countries` VALUES ('SC', 'Seychelles');
INSERT INTO `countries` VALUES ('SL', 'Sierra Leone');
INSERT INTO `countries` VALUES ('SG', 'Singapore');
INSERT INTO `countries` VALUES ('SK', 'Slovakia');
INSERT INTO `countries` VALUES ('SI', 'Slovenia');
INSERT INTO `countries` VALUES ('SB', 'Solomon Islands');
INSERT INTO `countries` VALUES ('SO', 'Somalia');
INSERT INTO `countries` VALUES ('ZA', 'South Africa');
INSERT INTO `countries` VALUES ('GS', 'South Georgia and the South Sandwich Islands');
INSERT INTO `countries` VALUES ('ES', 'Spain');
INSERT INTO `countries` VALUES ('LK', 'Sri Lanka');
INSERT INTO `countries` VALUES ('SD', 'Sudan');
INSERT INTO `countries` VALUES ('SR', 'Suriname');
INSERT INTO `countries` VALUES ('SJ', 'Svalbard and Jan Mayen');
INSERT INTO `countries` VALUES ('SZ', 'Swaziland');
INSERT INTO `countries` VALUES ('SE', 'Sweden');
INSERT INTO `countries` VALUES ('CH', 'Switzerland');
INSERT INTO `countries` VALUES ('SY', 'Syrian Arab Republic');
INSERT INTO `countries` VALUES ('TW', 'Taiwan, Province Of China');
INSERT INTO `countries` VALUES ('TJ', 'Tajikistan');
INSERT INTO `countries` VALUES ('TZ', 'Tanzania, United Republic of');
INSERT INTO `countries` VALUES ('TH', 'Thailand');
INSERT INTO `countries` VALUES ('TL', 'Timor-Leste');
INSERT INTO `countries` VALUES ('TG', 'Togo');
INSERT INTO `countries` VALUES ('TK', 'Tokelau');
INSERT INTO `countries` VALUES ('TO', 'Tonga');
INSERT INTO `countries` VALUES ('TT', 'Trinidad and Tobago');
INSERT INTO `countries` VALUES ('TN', 'Tunisia');
INSERT INTO `countries` VALUES ('TR', 'Turkey');
INSERT INTO `countries` VALUES ('TM', 'Turkmenistan');
INSERT INTO `countries` VALUES ('TC', 'Turks and Caicos Islands');
INSERT INTO `countries` VALUES ('TV', 'Tuvalu');
INSERT INTO `countries` VALUES ('UG', 'Uganda');
INSERT INTO `countries` VALUES ('UA', 'Ukraine');
INSERT INTO `countries` VALUES ('AE', 'United Arab Emirates');
INSERT INTO `countries` VALUES ('GB', 'United Kingdom');
INSERT INTO `countries` VALUES ('US', 'United States');
INSERT INTO `countries` VALUES ('UM', 'United States Minor Outlying Islands');
INSERT INTO `countries` VALUES ('UY', 'Uruguay');
INSERT INTO `countries` VALUES ('UZ', 'Uzbekistan');
INSERT INTO `countries` VALUES ('VU', 'Vanuatu');
INSERT INTO `countries` VALUES ('VE', 'Venezuela');
INSERT INTO `countries` VALUES ('VN', 'Viet Nam');
INSERT INTO `countries` VALUES ('VG', 'Virgin Islands, British');
INSERT INTO `countries` VALUES ('VI', 'Virgin Islands, U.S.');
INSERT INTO `countries` VALUES ('WF', 'Wallis And Futuna');
INSERT INTO `countries` VALUES ('EH', 'Western Sahara');
INSERT INTO `countries` VALUES ('YE', 'Yemen');
INSERT INTO `countries` VALUES ('ZM', 'Zambia');
INSERT INTO `countries` VALUES ('ZW', 'Zimbabwe');