'Super Duper SQL Tips for Software Engineers' cc: GolitsynSergei hackernoon javascript sql
In this post, we will talk about how you can possibly improve your database queries and speed up your applications. Everything is collected based on my experience and parts found on the Internet. The primary query that can be used: select sum from table_name:::float/ from table #:: select sum from #:. Select sum is a more constructive option than determining by eye or sitting with a stopwatch. The lower the value of the second column, the more likely it is that the index will be justified.
The query may not be optimal, but it's enough for us to understand that the lower the value of the second column, the more likely it is that the index will be justified.After creating indexes or having inherited the created indexes, is it worth checking if they are used at all? The primary query that can be used:
Sometimes you have to use the expression in, but it may be necessary to search by tuples, well, more precisely like this: expression in queries. It's not very good when many values are passed in query parameters, but life sets its priorities, so sometimes it's helpful to know about such a construction.
You can also add various kinds of fields, BUT keep in mind that when you change the DDL , locks can occur. This is especially true for PostgreSQL < 11 versions.Everyone knows about views, but many databases also have materialized views. They are almost like ordinary views but materialized.REFRESH MATERIALIZED VIEW name_view
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Super Animal Royale's Super Summer Event Kicks Off TodayICYMI: ModusGames and Pixile revealed all of their plans for the new Summer Royale event happening in SuperAnimalRoyale right now.
Read more »
Scientists Built an AI to Give Ethical Advice, But It Turned Out Super RacistResearchers at the Allen Institute for AI created Ask Delphi to make ethical judgments — but it turned out to be awfully bigoted and racist instead.
Read more »
A super-sharp gene editing tool could tackle high cholesterol and other common ailmentsAwe-inspiring science reporting, technology news, and DIY projects. Skunks to space robots, primates to climates. That's Popular Science, 145 years strong.
Read more »
Hear Lou Reed's Primordial, Super-Rare Country-Folk Recording of 'Heroin'Artist recorded track two years before Velvet Underground as a demo, which will be coming out officially on a comp this summer
Read more »
5,000 volunteers needed for Super Bowl LVII events happening in Phoenix areaThousands of volunteers are needed to help out with events taking place throughout the Valley for Super Bowl LVII.
Read more »
Arizona Super Bowl Host Committee needs 5,000 volunteersThe Arizona Super Bowl Host Committee needs 5,000 volunteers for events surrounding the Super Bowl LVII in 2023. Here’s what you need to know if you want to become a volunteer.
Read more »