laravel数据库迁移如何实现分区

Question

使用 Laravel 5.3 如何实现分区。以下是我尝试在迁移中添加的 mysql 表结构。

CREATE TABLE `settings` (
    `id` INT(10) unsigned NOT NULL AUTO_INCREMENT,
    `client_id` INT(11) NOT NULL,
    `key` VARCHAR(255) COLLATE utf8_unicode_ci NOT NULL,
    `value` TEXT COLLATE utf8_unicode_ci NOT NULL,
    `created_at` TIMESTAMP NULL DEFAULT NULL,
    `updated_at` TIMESTAMP NULL DEFAULT NULL,
    PRIMARY KEY `settings_id_primary` (`client_id`, `id`),
    UNIQUE KEY `settings_key_unique` (`client_id`, `key`),
    KEY `settings_id_key` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci PARTITION BY KEY (`client_id`) PARTITIONS 50;

下面是我到目前为止所尝试的，但这只是添加列和键。

    Schema::create('settings', function(Blueprint $table) {
        $table->integer('id'); // I can't use increments, because throwing an error when I try to add primary key below
        $table->integer('client_id');
        $table->string('key');
        $table->text('value');
        $table->timestamps();

        $table->primary(['client_id', 'id']);
        $table->unique(['client_id', 'key']);
    });

如何进行分区？如果有迁移不支持分区。有没有办法可以在迁移中转储整个 SQL 查询并运行。

Answer 1

我觉得对你有帮助

      Schema::create('settings', function(Blueprint $table) {
         $table-> increments('id');
         $table->integer('client_id')->primary();
         $table->string('key');
         $table->text('value');
         $table->timestamps();

         $table->unique(['client_id', 'key']);
       });         

或

      Schema::create('settings', function(Blueprint $table) {
         $table-> increments('id');
         $table->integer('client_id');
         $table->string('key');
         $table->text('value');
         $table->timestamps();

         $table->primary('client_id');
         $table->unique(['client_id', 'key']);
       });         

我到处找，找不到分区的解决方案。
但是，

我的建议使用，下面不准备进入up和down函数的迁移文件函数

DB::unprepared()   

迁移以使用分区运行 SQL 查询。

喜欢，

DB::unprepared('create table....')

Answer 2

现在有一个 Composer 包用于此目的，称为brokenice/laravel-mysql-partition：

https://packagist.org/packages/brokenice

这是来自文档的示例：

// You use their extended Schema class:
use Brokenice\LaravelMysqlPartition\Schema\Schema;
// You might also need this (I didn't need it for partitioning by hash):
use Brokenice\LaravelMysqlPartition\Models\Partition;

// I omitted class and method definition boilerplate...

// Create a table as you would normally:
Schema::create('partitioned', static function (Blueprint $table) {
    // ...
});
    
// Now partition it (it will run an ALTER TABLE query):
Schema::partitionByList(
    'partitioned', 
    'id',
    [
        new Partition('server_east', Partition::LIST_TYPE, [1,43,65,12,56,73]),
        new Partition('server_west', Partition::LIST_TYPE, [534,6422,196,956,22])
    ]
);

Answer 3

您不需要任何库来创建分区。

只需将分区代码添加到“engine”属性中即可。

示例（假设您使用 MySQL 或 MariaDB）：

public function up(): void
    {
        Schema::create('event_sources', function (Blueprint $table) {
            $table->id()->primary();
            $table->uuid('commit_id')->index();
            $table->string('entity', 100);    
            $table->timestamps();

            $table->engine = "InnoDB PARTITION BY RANGE COLUMNS(`id`) 
        (           
            PARTITION `p_first` VALUES LESS THAN (1000000),
            PARTITION `p_two` VALUES LESS THAN (2000000), 
            PARTITION `p_more` THAN (MAXVALUE)
         )";
        });
    }

您还可以直接将引擎选项添加到引擎属性中：

示例：

$table->engine = 'InnoDB ROW_FORMAT=COMPRESSED';