SQL: Interrupting a query
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Published on 2010-05-02T21:24:53Z
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I've worked on a project using a proprietary non-SQL DB where queries could be interrupted and in the codebase there were quite some spots where that functionnality was used and made perfect sense (for example to stop a long running query that gets cancelled by the user, or when a more recent query takes place and renders the previous query obsolete, etc.) and I realized I never really saw that kind of "interrupted queries" previously and thought it could make a good SO question (several questions, but they're all related to exactly the same thing):
can SQL queries be interrupted?
is this part of the SQL standard?
if it's not part of the SQL standard, which SQL DBs allow queries to be interrupted (any example most welcome)?
is it common to interrupt a DB query (SQL or not) which you'll know you won't care about the result anymore? (in the codebase I've worked on, it sure helps lighten the server's load)
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