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Day: July 19, 2021

Managing Spatial Data in Azure

Rolf Tesmer takes us through the different Azure services which offer some ability to work with spatial data:

Every now and then you come across a use-case where you need to do something with spatial data, and you need to do it in the cloud (Azure, of course)! Up until that very point you maybe didn’t know, or perhaps even care, much about the intricacies of spatial data assets, let alone how the heck you were going to store it, process it, and query it, without making a mess of your current data stack.

Well, if you’re that person, then I say welcome to this blog post!

Click through for a fairly lengthy list, including Rolf’s comments on each. Also note the one big omission from the list as far as data platform products.

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The Downside Risk of Index Hints

Chad Callihan explains why you should be careful before deploying code which uses index hints:

This might be good enough…for now. The potential issues with index hints can be more about the future than the present. You might come along later on and think “why not use an index to cover the whole query?” We can add the index:

But if our query is still written to include the index hint (in a stored procedure for example) the new index is not going to matter. The old index is still forced to be used. Even if something better comes along, you’re going to need to modify the query in addition to adding the better index. If an index was added for a completely separate query but would also be an improvement for the query in question, it’s also not going to get by the index hint.

Click through for additional problems which can crop up as you use index hints. This isn’t a big argument against using them at all, but rather understanding (and remembering!) where you do use them and making sure that’s communicated well to the entire team, including future you.

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