尝试迁移时出现以下错误。实际上,我有很多数据,所以我在laravel中使用了大块。
我使用MongoDB而不是SQL
** You must specify an orderBy clause when using this function.**
我的迁移文件的功能是
public function up()
{
ini_set('max_execution_time', 250);
ini_set('memory_limit', '1024M');
$product_array = DB::collection('product')->orderBy('created_at','asc');
$product_array->chunk(20, function($product_array)
{
$cotationPercentForecast=0;
$cotationPercent=0;
$quote_tpl = array();
foreach ($product_array as $key => $value) {
if (isset($value['quote_tpl'])) {
$quote_tpl = $value['quote_tpl'];
$defaultScoreCount = 0;
$realScoreCount = 0;
$forecastScoreCount = 0;
foreach ($quote_tpl as $idxPerimetre => $perimetre) {
if (isset($perimetre['families'])) {
foreach ($perimetre['families'] as $idxFamilies => $family) {
if (isset($family['subfamilies'])) {
foreach ($family['subfamilies'] as $idxSubFamilies => $subfamily) {
if (isset($subfamily['items'])) {
foreach ($subfamily['items'] as $idxitem => $item) {
if (isset($item['criterias'])) {
foreach ($item['criterias'] as $idxcriteria => $criteria) {
if (!isset($criteria['inactive']) || $criteria['inactive'] != 'true') {
$defaultScoreCount++;
if (isset($criteria['real_score'])) {
$realScoreCount++;
}
if (isset($criteria['forecast_score'])) {
$forecastScoreCount++;
}
}
} // FOREACH CRITERIA
} // ISSET CRITERIA ###
} // FOREACH ITEM
} // ISSET ITEM ###
} // FOREACH SUBFAMILY
} // ISSET SUBFAMILY ###
} // FOREACH FAMILY
} // ISSET FAMILY ###
}// FOREACH PERIMETER ##
if ($realScoreCount > 0 && $defaultScoreCount > 0) {
$cotationPercentUn = ($realScoreCount / $defaultScoreCount) * 100;
$cotationPercent = round($cotationPercentUn, 2);
}
if ($forecastScoreCount > 0 && $defaultScoreCount > 0) {
$cotationPercentUnForecast = ($forecastScoreCount / $defaultScoreCount) * 100;
$cotationPercentForecast = round($cotationPercentUnForecast, 2);
}
$results = DB::collection('product')->update(['cotation_percent' => $cotationPercent,'forecast_cotation_percent' => $cotationPercentForecast]);
}
}
});
}
我在这里经历了很多答案,几乎所有人都建议使用orderBy,所以我用它。但仍然得到错误。
我用过
Product::chunk(5, function($product_array){}
任何帮助表示赞赏。提前致谢。
当Laravel内部使用enforceOrderBy
中定义的Illuminate/Database/Query/Builder
时,会添加此警告。
每当你在DB
facade Illuminate\Database\Query\Builder
实例化的查询构建器上使用chunk时,它会问你:
使用此函数时,必须指定orderBy子句。
所以如果你这样做会发生:
\DB::table('product')->chunk(10, function($product){
...
});
如果您手动添加订单,它将不会抛出错误并将按预期工作:
\DB::table('product')->orderBy('created_at')->chunk(10, function($product){
...
});
但是,最好直接使用Eloquent Model,这样就不会强制您手动添加order by子句:
Product::chunk(10, function($product){
...
});
也没有方法DB::collection()
,如果你愿意,你可以使用DB::table()
,除非你使用mongodb
而不是MySQL