SQL Support in GAE after moving out of Preview Status?

[Matt Myers]

Does anyone have any information about the "SQL Support" that will be introduced when GAE moves out of Preview status?  What can we expect?

D’alesandre said that SQL support, SSL encryption and full-text search, all parts of the App Engine for Business offering, are top priorities not just for the App Engine team, but for Google overall, and should be ready once the product loses its “preview” status. SQL support, he added, is particularly important because of its appeal to enterprise developers, but it’s a complex process incorporating it into a platform that wasn’t designed with SQL in mind.

[Robert Kluin]

I think I've heard SQL is in trusted tester right now, but I don't
remember for sure.

It is very unlikely that you'll get a more detailed response on the
general availability timing -- could be two months, two days, or two
years.

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[objectuser]

I wonder what the SQL support will look like.  It seems like either:

• It will be a very limited subset of SQL that works within the confines of the datastore, or
  
• It will be something that supports a wide range of SQL queries, but will, behind the scenes, do things that will adversely impact performance for the datastore novice.

All that said, I know the GAE developers are smarter than me and will provide a reasonable compromise.  Looking forward to seeing what they come up with.

[Robert Kluin]

I think the SQL support will look a lot like MySQL, but, just like
MySQL, it will not scale like the datastore.

Robert

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[Jay Young]

According to Sean Lynch, http://news.ycombinator.org/item?id=2273450:

Yes, to confirm, this is not an abstraction on the current Datastore but a separate "real-deal" service.