问题
I am new in Azure and I am trying to implement multishard query using Elastic Scale and Entity Framework. Unfortunately I am not able to find any example solutions or good practises to achieve that target. Can anyone help me in this issue? I would be very grateful for some materials to study or hints. Thank you in advance.
回答1:
Thanks for your question on multi-shard queries with Elastic Scale and EF. Currently, a straight-forward integration like the one you probably saw for data-dependent routing is not available for multi-shard queries. This is an area we are currently investing in, though. Please contact me directly over email at torsteng(at)microsoft(dot)com and we can discuss whether your use case is a good fit and we can get you unblocked.
Thanks, Torsten
回答2:
Update for 2015, Having come across similar requirements, I contacted Torsten to see if the situation has changed, kindly he got back to me.
Hi Matt,
If your cross-db querying scenario with EF is limited to read-only access on >the shards, I’d suggest to take a look at Elastic Query for SQL DB – currently >in preview. The best entry points are probably the following documents:
Overview: https://azure.microsoft.com/enus/documentation/articles/sql-database-elastic-query-overview/
Step-by-step tutorial: https://azure.microsoft.com/en-us/documentation/articles/sql-database-elastic-query-getting-started/
With Elastic Query set up, you can point an EF DbContext to the external tables >you have defined using the Elastic Query DDL. That DbContext can then be used >for everything that requires cross-db querying. This is a somewhat intricate >mix between code-first and db-first. But, it should get you off the ground.
The instructions seem simple enough, but do involve setting up another database (at the moment premium) in azure. Hope that helps.
回答3:
Coming back to the thread since now the sample for using elastic database tools (previously known as Elastic Scale) is now available with EF here.
Hope this helps! Thanks Silvia Doomra
来源：https://stackoverflow.com/questions/29591449/multishardquery-on-sql-azure-elastic-scale-with-entity-framework