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CROSS JOIN vs INNER JOIN in SQL

...lues, it's wrong; for rows as elements they can't be shared. For tables as sets you don't need a Venn diagram. Figure 1 is a common terrible attempt to explain JOIN. Its key is also complex: It's only for tables as sets & only equijoin & only one value; it also represents the input different...
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How to return a part of an array in Ruby?

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Proper use of errors

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Temporarily switch working copy to a specific Git commit

... git reset --hard <hash> changes the HEAD of the current branch, while with git checkout <hash> you get a detached checkout which does not change any branch, and you can easily return without knowing the original hash ID...
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What is the purpose of a self executing function in javascript?

...ight... if you do without var, like this: ...function(){ foo=3;}? It would set global variable, right? – T.Todua Nov 25 '16 at 20:41 ...
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iOS 8 removed “minimal-ui” viewport property, are there other “soft fullscreen” solutions?

...enable user to scroll; for minimal-ui to persist, window scroll must be offset on page load and after orientation change. However, there is no way of calculating the dimensions of the minimal-ui using the screen variable, and thus no way of telling when user is in the minimal-ui in advance. These o...
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Insert a line break in mailto body

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Repeat a task with a time delay?

... You should use Handler's postDelayed function for this purpose. It will run your code with specified delay on the main UI thread, so you will be able to update UI controls. private int mInterval = 5000; // 5 seconds by default, can be changed later private Han...
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SQL Server indexes - ascending or descending, what difference does it make?

...00 1 for the script below /*Uses T1 definition from above*/ SET NOCOUNT ON; CREATE TABLE T2( [ID] [int] IDENTITY NOT NULL, [Filler] [char](8000) NULL, PRIMARY KEY CLUSTERED ([ID] DESC)) BEGIN TRAN GO INSERT INTO T1 DEFAULT VALUES GO 1000 INSERT INT...
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JSON.stringify without quotes on properties?

... just worked awesome for me while writing an object into a Neo4j query, to set multiple params at once. – agm1984 Aug 17 '17 at 3:29 1 ...