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PostgreSQL function for last inserted ID

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Append TimeStamp to a File Name

...following custom format specifiers y (year), M (month), d (day), h (hour 12), H (hour 24), m (minute), s (second), f (second fraction), F (second fraction, trailing zeroes are trimmed), t (P.M or A.M) and z (time zone). With Extension Method Usage: string result = "myfile.txt".AppendTimeS...
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Find maximum value of a column and return the corresponding row values using Pandas

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How much size “Null” value takes in SQL Server

I have a large table with say 10 columns. 4 of them remains null most of the times. I have a query that does null value takes any size or no size in bytes. I read few articles some of them are saying : ...
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Is it correct to use JavaScript Array.sort() method for shuffling?

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How can I get useful error messages in PHP?

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Path to Powershell.exe (v 2.0)

... 175 I believe it's in C:\Windows\System32\WindowsPowershell\v1.0\. In order to confuse the innocen...
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Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?

...you can't just leave an argument open. You can't just say "well, let x := 1" and try out every y you may like to try. You have to construct every time the whole tuple with x := 1. So if you like to see what the functions return for y := 1, y := 2, y := 3 you have to write f(1,1) , f(1,2) , f(1,3)....
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Resolving a 'both added' merge conflict in git?

... 141 If you use git rm git will remove all versions of that path from the index so your resolve act...
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Why use make over a shell script?

... 132 The general idea is that make supports (reasonably) minimal rebuilds -- i.e., you tell it what...