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MySQL vs MongoDB 1000 reads
...nary json document)
So a b-tree lookup, and a binary page read. Log(n) + 1 IOs. If the indexes can reside entirely in memory, then 1 IO.
In MySQL with 20 tables, you have to perform:
One index lookup on the root table (again, assuming the entity is fetched by id)
With a clustered index, we can ...
How would Git handle a SHA-1 collision on a blob?
...t, and get very very unlucky: one of the blobs ends up having the same SHA-1 as another that is already in your repository. Question is, how would Git handle this? Simply fail? Find a way to link the two blobs and check which one is needed according to the context?
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How do I convert an enum to a list in C#? [duplicate]
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What's the right way to decode a string that has special HTML entities in it? [duplicate]
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edited Mar 4 '14 at 18:55
answered Sep 12 '11 at 22:29
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Easiest way to copy a table from one database to another?
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Pry: show me the stack
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Use the pry-stack_explorer plugin, it allows you to move up and down the call-stack (with up and...
How to check if an email address exists without sending an email?
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Create new user in MySQL and give it full access to one database
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edited Jan 3 '18 at 14:11
Flimm
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Get PostGIS version
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edited Mar 28 '13 at 20:19
Brad Koch
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