Add useColumnStatisticsOff for MySql (#133)

* Add useColumnStatisticsOff for MySql

Add useColumnStatisticsOff() method in. order to enable --column-statistics=0 useful in a specific case. The scenario is: mysqldump 8 that queries by default column_statics table in information_schema database.
In some old version of MySql (service) like 5.7 , this table not exists.

Close #132

* renaming useColumnStatisticsOff into doNotUseColumnStatistics

* Update README for doNotUseColumnStatistics() method

* Add test for doNotUseColumnStatistics() use case.

README.md

@@ -132,6 +132,22 @@ Spatie\DbDumper\Databases\MySql::create()
     ->dumpToFile('dump.sql');
 ```
 
+### Don't use column_statics table with some old version of MySql service.
+
+In order to use "_--column-statistics=0_" as option in mysqldump command you can use _doNotUseColumnStatistics()_ method.
+
+If you have installed _mysqldump 8_, it queries by default _column_statics_ table in _information_schema_ database.
+In some old version of MySql (service) like 5.7, this table it not exists. So you could have an exception during the execution of mysqldump. To avoid this, you could use _doNotUseColumnStatistics()_ method.
+
+```php
+Spatie\DbDumper\Databases\MySql::create()
+    ->setDbName($databaseName)
+    ->setUserName($userName)
+    ->setPassword($password)
+    ->doNotUseColumnStatistics()
+    ->dumpToFile('dump.sql');
+```
+
 ### Excluding tables from the dump
 
 Using an array:

src/Databases/MySql.php

@@ -20,6 +20,9 @@ class MySql extends DbDumper
     /** @var bool */
     protected $skipLockTables = false;
 
+    /** @var bool */
+    protected $doNotUseColumnStatistics = false;
+
     /** @var bool */
     protected $useQuick = false;
 
@@ -113,6 +116,16 @@ public function skipLockTables()
         return $this;
     }
 
+    /**
+     * @return $this
+     */
+    public function doNotUseColumnStatistics()
+    {
+        $this->doNotUseColumnStatistics = true;
+
+        return $this;
+    }
+
     /**
      * @return $this
      */
@@ -250,6 +263,10 @@ public function getDumpCommand(string $dumpFile, string $temporaryCredentialsFil
             $command[] = '--skip-lock-tables';
         }
 
+        if ($this->doNotUseColumnStatistics) {
+            $command[] = '--column-statistics=0';
+        }
+
         if ($this->useQuick) {
             $command[] = '--quick';
         }

tests/MySqlTest.php

@@ -51,6 +51,21 @@ public function it_can_generate_a_dump_command_with_compression_enabled()
         $this->assertSame($expected, $dumpCommand);
     }
 
+    /** @test */
+    public function it_can_generate_a_dump_command_with_columnstatistics()
+    {
+        $dumpCommand = MySql::create()
+            ->setDbName('dbname')
+            ->setUserName('username')
+            ->setPassword('password')
+            ->doNotUseColumnStatistics()
+            ->getDumpCommand('dump.sql', 'credentials.txt');
+
+        $expected = '\'mysqldump\' --defaults-extra-file="credentials.txt" --skip-comments --extended-insert --column-statistics=0 dbname > "dump.sql"';
+
+        $this->assertSame($expected, $dumpCommand);
+    }
+
     /** @test */
     public function it_can_generate_a_dump_command_with_gzip_compressor_enabled()
     {