An acronym for "Structured Query Language" (it's not the name of a specific DBMS product), SQL can be used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. It can also be used to manage schemas and data ...

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Is this update, select combination query thread safe?

I have a table called seats, which has a schema like this id,taken For each user, I take a random untaken id and assign to that user, here for simplicity say, I make taken =1. The query I am ...
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How to recursively find gaps where 90 days passed, between rows

This is a kind of trivial task in my C# homeworld, but I don't yet make it in SQL and would prefer to solve it set-based (without cursors). A resultset should come from a query like this. SELECT ...