Laravel-在重复键上批量插入会更新大数据集 [英] Laravel - Bulk insert on duplicate key update large data set

问题描述

我有大约80k条记录，我每天需要运行几次插入/更新脚本.

I have approx 80k records that I need to run an insert/update script on several times per day.

INSERT INTO `my_rankings` (`id`, `rank`) VALUES (1,100),(2,99)(3,102)...(80000,3) 
  ON DUPLICATE KEY UPDATE `rank` = values(`rank`);

这些记录当前为数组格式:

These records are currently in an array format:

$rankings = [
  ['id' => 1, 'rank' => 100],
  ['id' => 2, 'rank' => 99],
  ['id' => 3, 'rank' => 102],
  ...
  ['id' => 80000, 'rank' => 3],
]

我可以运行上述更新查询吗?

Is there a nice / performant way I can run the above mentioned update query?

我看过Eloquent的Model::updateOrCreate(...).但是我认为我不能将其用于批量插入/更新.

I have looked at Eloquent's Model::updateOrCreate(...). However I don't think I can use this for bulk insert/updates.

我想避免在$rankings数组上使用foreach并插入/更新单个记录，因为脚本将花费很长时间.

I want to avoid using foreach on my $rankings array and insert/updating individual records, because the script will take far too long.

我在 https://stackoverflow.com/a/34815725/1239122 下有此问题的答案它远非优雅.

I have an answer for this question below https://stackoverflow.com/a/34815725/1239122, however it is far from elegant.

推荐答案

我有一个解决方案-它不美观，但速度很快. 8万条记录为1.6秒. 任何更好的解决方案将不胜感激.

I have a solution - It's not elegant, but very fast. 1.6s for 80k records. Any better solutions would be much appreciated.

$allResults = [
    ['id' => 1, 'rank' => 100],
    ['id' => 2, 'rank' => 99],
    ['id' => 3, 'rank' => 102],
    ...
    ['id' => 80000, 'rank' => 3],
];

$rankings = [];
foreach ($allResults as $result) {
    $rankings[] = implode(', ', ['"' . $result['id'] . '"', $result['rank']]);
}

$rankings = Collection::make($rankings);

$rankings->chunk(500)->each(function($ch) {
    $rankingString = '';
    foreach ($ch as $ranking) {
        $rankingString .= '(' . $ranking . '), ';
    }

    $rankingString = rtrim($rankingString, ", ");

    try {
        \DB::insert("INSERT INTO my_rankings (`id`, `rank`) VALUES $rankingString ON DUPLICATE KEY UPDATE `rank`=VALUES(`rank`)");
    } catch (\Exception $e) {
        print_r([$e->getMessage()]);
    }
});

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