world_cup | Modeling and Simulation for the 2018 FIFA World Cup
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kandi X-RAY | world_cup Summary
Modeling and Simulation for the 2018 FIFA World Cup
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QUESTION
How does with work. My nested query returns only 3 tuples. But when combined with outer query, it(outer query) returns 736 tuples. And this is the same amount of tuples if I write a query say select p.height from ... where True.
I read the books which says it only returns true which makes sense in my case. Also read few online article where exists returns True but the outer query only selects from the results of nested query.
mysql-workbench
...ANSWER
Answered 2019-May-27 at 20:18EXISTS
is true if and only if the subquery returns at least one tuple.
So as long there's at least one player with a height of 165, your EXISTS
returns true, for all tuples of the outer query that is. If there were no such player you had an empty set as result. So you see your use is pretty static and maybe doesn't make too much sense used in that way, unless that is what you intended.
Usually the subquery to an EXISTS
is correlated, i.e. a value of the outer query appears in the WHERE
clause of the inner query, so that the results of EXISTS
can differ from tuple to tuple of the outer query.
If you just want player with a height of 165 simply use the equality expression in the WHERE
clause.
QUESTION
I can't retrieve count info using type cast Array>
. Right now I'm started new project using Swift 4.1.
And I displayed static data on UITableView (Grouped) with section headers and rows.
I followed to show the data post by GDSM
from this link - How to form static data with the structure like array of objects in swift 4? (It's also I have asked before forming this kind of structures using NSMutableArray like in Objective c)
In ViewDidload I have assigned like var listOfScoresInfoArray = Array> ()
ANSWER
Answered 2018-Apr-05 at 14:09You get the current section with
QUESTION
I have setup a Mediawiki family and installed the Mediawiki Mobilefrontend Extension for better mobile usability.
The extension documentation says that it is used on Wikimedia projects (like Wikipedia).
The extension gives the same look as what Wikipdia looks like on mobile, however, I noticed a big difference.
The Wikipedia on mobile seems to go to a mobile subdomain, in addition to the format that the Moileforntend Extension provides.
for example, a page about the "World Cup" has this url when viewed on a desktop computer: https://en.wikipedia.org/wiki/World_Cup
while it has this url when viewed from a mobile phone: https://en.m.wikipedia.org/wiki/World_Cup
My questions are:
1- Is this really a redirection to a mobile subdomain? or a mirror installation?
2- What are the benefits of redirecting to a subdomain while the Mobiefrontend extension provides the formatting already.
3- How does the data gets synchronized between the main site and the mobile site?
...ANSWER
Answered 2017-Apr-20 at 16:19The answer is mentioned in this part of the configuration.
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