durus | An persistent object database for Python
kandi X-RAY | durus Summary
kandi X-RAY | durus Summary
An persistent object database for Python
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of durus
durus Key Features
durus Examples and Code Snippets
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QUESTION
I'm working on this query. When I assign a date filter from subquery to main query, the response time increases from 1 second to 4.5 minutes.
I don't know how to solve this problem and fix my query. I'm writing the query and the methods I've tried.
Thank you for your help.
My query:
...ANSWER
Answered 2019-Aug-19 at 05:24Common ways to optimize:
1) remove calculations from the left in filters
2) render subqueries in separate temporary tables or in intermediate CTE queries
3) do not use table variables
4) in the early stages try to filter as much data as possible before connections
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