MySQL并行查询引擎 Shard-Query ShardQuery 是一个MySQL的分布式并行查询引擎,这是一个 PHP 的类,用来轻松访问分区数据集。 示例代码: $shard_list = array ( 'shard1' => array( 'host'=>'127.0.0.1', 'user'=>'root', 'password'=>'', 'db'=>'test', 'port'=>3306 ), 'shard2' => array(...
In addition to adding parallelism via scale-up, Shard-Query can improve performance of almost all queries by spreading them over more than one physical server. This is called “scaling out” and it allows Shard-Query to vastly improve the performance of queries which have to examine a large ...
While Shard-Query can work over multiple nodes, this blog post focuses on using Shard-Query with a single node. Shard-Query can add parallelism to queries which use partitioned tables. Very large tables can often be partitioned fairly easily. Shard-Query can leverage partitioning to add paralel...
Learn more about the Microsoft.Azure.SqlDatabase.ElasticScale.Query.MultiShardDataReader.GetSchemaTable in the Microsoft.Azure.SqlDatabase.ElasticScale.Query namespace.
在Elasticsearch中,query_shard_exception是一个查询异常,表示在执行查询时出现了错误。这个异常通常是由于查询语法错误、字段不存在或者字段类型不匹配等原因引起的。 为了解决query_shard_exception执行查询失败的问题,可以采取以下步骤: 检查查询语法:确保查询语句正确无误,包括正确使用查询关键字、字段名和操作符等。
Learn more about the Microsoft.Azure.SqlDatabase.ElasticScale.Query.MultiShardDataReader.ReadAsync in the Microsoft.Azure.SqlDatabase.ElasticScale.Query namespace.
publiceventEventHandler<Microsoft.Azure.SqlDatabase.ElasticScale.Query.ShardExecutionEventArgs> ShardExecutionFaulted; Event Type EventHandler<ShardExecutionEventArgs> Applies to ProductVersions Azure SDK for .NETLatest In this article Definition Applies to...
MultiShardException.GetObjectData(SerializationInfo, StreamingContext) Method Reference Feedback Definition Namespace: Microsoft.Azure.SqlDatabase.ElasticScale.Query Assembly: Microsoft.Azure.SqlDatabase.ElasticScale.Client.dll Package: Microsoft.Azure.SqlDatabase.ElasticScale.Client v2.3.0 C# Copy ...
代表一个集群，集群中有多个节点，其中有一个为主节点，这个主节点是可以通过选举产生的，主从节点是对于...
Caused by: org.elasticsearch.index.query.QueryShardException: failed to create query: { "bool" : { "should" : [ { "match_phrase" : { "nickname" : { "query" : "十分", "slop" : 0, "boost" : 100.0 } } }, { "match_phrase" : { "analyzed_name" : { "query" : "十分", "...